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development</span> </div> </a> <button aria-controls="toc-Historical_development-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Historical development subsection</span> </button> <ul id="toc-Historical_development-sublist" class="vector-toc-list"> <li id="toc-Military_variants" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Military_variants"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Military variants</span> </div> </a> <ul id="toc-Military_variants-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Miniature_size" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Miniature_size"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Miniature size</span> </div> </a> <ul id="toc-Miniature_size-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Broadcast_usage" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Broadcast_usage"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.3</span> <span>Broadcast usage</span> </div> </a> <ul id="toc-Broadcast_usage-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Patch_bay_connectors" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Patch_bay_connectors"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.4</span> <span>Patch bay connectors</span> </div> </a> <ul id="toc-Patch_bay_connectors-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Less_common" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Less_common"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.5</span> <span>Less common</span> </div> </a> <ul id="toc-Less_common-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Decline_of_phone_connector_sockets_in_consumer_goods" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Decline_of_phone_connector_sockets_in_consumer_goods"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.6</span> <span>Decline of phone connector sockets in consumer goods</span> </div> </a> <ul id="toc-Decline_of_phone_connector_sockets_in_consumer_goods-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Aviation_and_US_military_connectors" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Aviation_and_US_military_connectors"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Aviation and US military connectors</span> </div> </a> <ul id="toc-Aviation_and_US_military_connectors-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-General_use" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#General_use"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>General use</span> </div> </a> <ul id="toc-General_use-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Computer_sound" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Computer_sound"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Computer sound</span> </div> </a> <button aria-controls="toc-Computer_sound-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Computer sound subsection</span> </button> <ul id="toc-Computer_sound-sublist" class="vector-toc-list"> <li id="toc-Microphone_power" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Microphone_power"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.1</span> <span>Microphone power</span> </div> </a> <ul id="toc-Microphone_power-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-TRRS_headset_sockets" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#TRRS_headset_sockets"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.2</span> <span>TRRS headset sockets</span> </div> </a> <ul id="toc-TRRS_headset_sockets-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Surround_sound" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Surround_sound"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.3</span> <span>Surround sound</span> </div> </a> <ul id="toc-Surround_sound-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Combined_TRS_and_TOSLINK" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Combined_TRS_and_TOSLINK"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.4</span> <span>Combined TRS and TOSLINK</span> </div> </a> <ul id="toc-Combined_TRS_and_TOSLINK-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Compatibility_for_different_numbers_of_rings" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Compatibility_for_different_numbers_of_rings"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Compatibility for different numbers of rings</span> </div> </a> <ul id="toc-Compatibility_for_different_numbers_of_rings-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Video" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Video"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Video</span> </div> </a> <ul id="toc-Video-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Recording_equipment" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Recording_equipment"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Recording equipment</span> </div> </a> <ul id="toc-Recording_equipment-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Mobile_devices" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Mobile_devices"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>Mobile devices</span> </div> </a> <button aria-controls="toc-Mobile_devices-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Mobile devices subsection</span> </button> <ul id="toc-Mobile_devices-sublist" class="vector-toc-list"> <li id="toc-TRRS_standards" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#TRRS_standards"> <div class="vector-toc-text"> <span class="vector-toc-numb">9.1</span> <span>TRRS standards</span> </div> </a> <ul id="toc-TRRS_standards-sublist" class="vector-toc-list"> <li id="toc-Interoperability" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Interoperability"> <div class="vector-toc-text"> <span class="vector-toc-numb">9.1.1</span> <span>Interoperability</span> </div> </a> <ul id="toc-Interoperability-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-TRRRS_standards" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#TRRRS_standards"> <div class="vector-toc-text"> <span class="vector-toc-numb">9.2</span> <span>TRRRS standards</span> </div> </a> <ul id="toc-TRRRS_standards-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Switch_contacts" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Switch_contacts"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>Switch contacts</span> </div> </a> <ul id="toc-Switch_contacts-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Design" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Design"> <div class="vector-toc-text"> <span class="vector-toc-numb">11</span> <span>Design</span> </div> </a> <ul id="toc-Design-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Audio_signals" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Audio_signals"> <div class="vector-toc-text"> <span class="vector-toc-numb">12</span> <span>Audio signals</span> </div> </a> <button aria-controls="toc-Audio_signals-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Audio signals subsection</span> </button> <ul id="toc-Audio_signals-sublist" class="vector-toc-list"> <li id="toc-Balanced_audio" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Balanced_audio"> <div class="vector-toc-text"> <span class="vector-toc-numb">12.1</span> <span>Balanced audio</span> </div> </a> <ul id="toc-Balanced_audio-sublist" class="vector-toc-list"> <li id="toc-Advantages" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Advantages"> <div class="vector-toc-text"> <span class="vector-toc-numb">12.1.1</span> <span>Advantages</span> </div> </a> <ul id="toc-Advantages-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Disadvantages" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Disadvantages"> <div class="vector-toc-text"> <span class="vector-toc-numb">12.1.2</span> <span>Disadvantages</span> </div> </a> <ul id="toc-Disadvantages-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Unbalanced_audio" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Unbalanced_audio"> <div class="vector-toc-text"> <span class="vector-toc-numb">12.2</span> <span>Unbalanced audio</span> </div> </a> <ul id="toc-Unbalanced_audio-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">13</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Explanatory_notes" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Explanatory_notes"> <div class="vector-toc-text"> <span class="vector-toc-numb">14</span> <span>Explanatory notes</span> </div> </a> <ul id="toc-Explanatory_notes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">15</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">16</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Table of Contents" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Phone connector (audio)</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 25 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-25" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">25 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%85%D9%88%D8%B5%D9%84_%D8%A7%D9%84%D8%B5%D9%88%D8%AA_3.5_%D9%85%D9%85" title="موصل الصوت 3.5 مم – Arabic" lang="ar" hreflang="ar" data-title="موصل الصوت 3.5 مم" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Jack_TRS" title="Jack TRS – Catalan" lang="ca" hreflang="ca" data-title="Jack TRS" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Jack_(konektor)" title="Jack (konektor) – Czech" lang="cs" hreflang="cs" data-title="Jack (konektor)" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Jackstik" title="Jackstik – Danish" lang="da" hreflang="da" data-title="Jackstik" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Klinkenstecker" title="Klinkenstecker – German" lang="de" hreflang="de" data-title="Klinkenstecker" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Pulkpistik" title="Pulkpistik – Estonian" lang="et" hreflang="et" data-title="Pulkpistik" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Conector_de_audio_anal%C3%B3gico" title="Conector de audio analógico – Spanish" lang="es" hreflang="es" data-title="Conector de audio analógico" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A7%D8%AA%D8%B5%D8%A7%D9%84%E2%80%8C%D8%AF%D9%87%D9%86%D8%AF%D9%87_%D8%B5%D8%AF%D8%A7" title="اتصال‌دهنده صدا – Persian" lang="fa" hreflang="fa" data-title="اتصال‌دهنده صدا" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Jack_(prise)" title="Jack (prise) – French" lang="fr" hreflang="fr" data-title="Jack (prise)" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%8F%B0_%EC%BB%A4%EB%84%A5%ED%84%B0" title="폰 커넥터 – Korean" lang="ko" hreflang="ko" data-title="폰 커넥터" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Connettore_jack" title="Connettore jack – Italian" lang="it" hreflang="it" data-title="Connettore jack" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%9F%E0%B4%BF_%E0%B4%86%E0%B5%BC_%E0%B4%8E%E0%B4%B8%E0%B5%8D_%E0%B4%95%E0%B4%A3%E0%B4%95%E0%B5%8D%E0%B4%B1%E0%B5%8D%E0%B4%B1%E0%B5%BC" title="ടി ആർ എസ് കണക്റ്റർ – Malayalam" lang="ml" hreflang="ml" data-title="ടി ആർ എസ് കണക്റ്റർ" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Klink_(stopcontact)" title="Klink (stopcontact) – Dutch" lang="nl" hreflang="nl" data-title="Klink (stopcontact)" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%95%E3%82%A9%E3%83%BC%E3%83%B3%E3%83%97%E3%83%A9%E3%82%B0" title="フォーンプラグ – Japanese" lang="ja" hreflang="ja" data-title="フォーンプラグ" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Jackplugg" title="Jackplugg – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Jackplugg" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Jack_(wtyczka)" title="Jack (wtyczka) – Polish" lang="pl" hreflang="pl" data-title="Jack (wtyczka)" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Conector_TRS" title="Conector TRS – Portuguese" lang="pt" hreflang="pt" data-title="Conector TRS" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A0%D0%B0%D0%B7%D1%8A%D1%91%D0%BC_TRS" title="Разъём TRS – Russian" lang="ru" hreflang="ru" data-title="Разъём TRS" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Phone_connector" title="Phone connector – Simple English" lang="en-simple" hreflang="en-simple" data-title="Phone connector" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A2%D0%A0%D0%A1_%D0%BA%D0%BE%D0%BD%D0%B5%D0%BA%D1%82%D0%BE%D1%80" title="ТРС конектор – Serbian" lang="sr" hreflang="sr" data-title="ТРС конектор" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Jakkiliitin" title="Jakkiliitin – Finnish" lang="fi" hreflang="fi" data-title="Jakkiliitin" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Teleplugg" title="Teleplugg – Swedish" lang="sv" hreflang="sv" data-title="Teleplugg" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/TRS_ba%C4%9Flay%C4%B1c%C4%B1s%C4%B1" title="TRS bağlayıcısı – Turkish" lang="tr" hreflang="tr" data-title="TRS bağlayıcısı" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/TRS_(%D0%B7%27%D1%94%D0%B4%D0%BD%D1%83%D0%B2%D0%B0%D1%87)" title="TRS (з'єднувач) – Ukrainian" lang="uk" hreflang="uk" data-title="TRS (з'єднувач)" data-language-autonym="Українська" 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class="vector-page-tools-landmark" aria-label="Page tools"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Appearance"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Appearance</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">hide</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><span class="mw-redirectedfrom">(Redirected from <a href="/w/index.php?title=Auxiliary_jack&redirect=no" class="mw-redirect" title="Auxiliary jack">Auxiliary jack</a>)</span></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">Family of connectors typically used for analog signals</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">Not to be confused with <a href="/wiki/Telephone_jack_and_plug" title="Telephone jack and plug">telephone jack and plug</a>, <a href="/wiki/Phone_charger" class="mw-redirect" title="Phone charger">phone charger</a>, or the similarly-spelled <a href="/wiki/Phono_connector" class="mw-redirect" title="Phono connector">phono connector</a> (<a href="/wiki/RCA_connector" title="RCA connector">RCA connector</a>).</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"Pentaconn" redirects here. For the camera manufacturer, see <a href="/wiki/Pentacon" title="Pentacon">Pentacon</a>.</div> <p class="mw-empty-elt"> </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Mated-plug-socket-switched.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Mated-plug-socket-switched.jpg/220px-Mated-plug-socket-switched.jpg" decoding="async" width="220" height="104" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/83/Mated-plug-socket-switched.jpg/330px-Mated-plug-socket-switched.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/83/Mated-plug-socket-switched.jpg/440px-Mated-plug-socket-switched.jpg 2x" data-file-width="469" data-file-height="221" /></a><figcaption>Phone <i>plug</i> mated in a phone <i>socket</i>. The plug's grooved tip is held firmly by the socket's <a href="/wiki/Spring_(device)" title="Spring (device)">spring</a> tip contact. When not mated, this spring instead connects to the flat <a href="#Switch_contacts">switch contact</a> for detecting a plug.</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Phone-connectors-labeled.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c1/Phone-connectors-labeled.jpg/220px-Phone-connectors-labeled.jpg" decoding="async" width="220" height="284" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c1/Phone-connectors-labeled.jpg/330px-Phone-connectors-labeled.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c1/Phone-connectors-labeled.jpg/440px-Phone-connectors-labeled.jpg 2x" data-file-width="970" data-file-height="1252" /></a><figcaption>TS and TRS plugs of different sizes</figcaption></figure> <p>A <b>phone connector</b> is a family of <a href="/wiki/Cylinder" title="Cylinder">cylindrically</a>-shaped <a href="/wiki/Electrical_connectors" class="mw-redirect" title="Electrical connectors">electrical connectors</a> primarily for <a href="/wiki/Analog_signal" title="Analog signal">analog</a> <a href="/wiki/Audio_signal" title="Audio signal">audio signals</a>. Invented in the late 19th century for <a href="/wiki/Telephone_switchboard" title="Telephone switchboard">tele<i>phone</i> switchboards</a>, the phone connector remains in use for interfacing wired <a href="/wiki/Audio_equipment" title="Audio equipment">audio equipment</a>, such as <a href="/wiki/Headphone" class="mw-redirect" title="Headphone">head<i>phones</i></a>, <a href="/wiki/Loudspeaker" title="Loudspeaker">speakers</a>, <a href="/wiki/Microphone" title="Microphone">micro<i>phones</i></a>, <a href="/wiki/Mixing_console" title="Mixing console">mixing consoles</a>, and <a href="/wiki/Electronic_musical_instruments" class="mw-redirect" title="Electronic musical instruments">electronic musical instruments</a> (e.g. <a href="/wiki/Electric_guitars" class="mw-redirect" title="Electric guitars">electric guitars</a>, <a href="/wiki/Electronic_keyboard" title="Electronic keyboard">keyboards</a>, and <a href="/wiki/Effects_units" class="mw-redirect" title="Effects units">effects units</a>). A <a href="/wiki/Gender_of_connectors_and_fasteners" title="Gender of connectors and fasteners"><i>male</i> connector</a> (a plug), is mated into a <i>female</i> connector (a socket), though <a href="#Other_terms">other terminology</a> is used. </p><p>Plugs have 2 to 5 <a href="/wiki/Electrical_contacts" class="mw-redirect" title="Electrical contacts">electrical contacts</a>. The <b>tip</b> contact is indented with a groove. The <b>sleeve</b> contact is nearest the (conductive or insulated) <a href="/wiki/Handle" title="Handle">handle</a>. Contacts are <a href="/wiki/Insulation_(electric)" class="mw-redirect" title="Insulation (electric)">insulated</a> from each other by a band of non-conductive material. Between the tip and sleeve are 0 to 3 <b>ring</b> contacts. Since phone connectors have many uses, it is common to simply name the connector according to its number of rings: </p> <style data-mw-deduplicate="TemplateStyles:r1275448275">.mw-parser-output .defaultleft{text-align:left}.mw-parser-output .defaultcenter{text-align:center}.mw-parser-output .defaultright{text-align:right}.mw-parser-output .col1left td:nth-child(1),.mw-parser-output .col2left td:nth-child(2),.mw-parser-output .col3left td:nth-child(3),.mw-parser-output .col4left td:nth-child(4),.mw-parser-output .col5left td:nth-child(5),.mw-parser-output .col6left td:nth-child(6),.mw-parser-output .col7left td:nth-child(7),.mw-parser-output .col8left td:nth-child(8),.mw-parser-output .col9left td:nth-child(9),.mw-parser-output .col10left td:nth-child(10),.mw-parser-output .col11left td:nth-child(11),.mw-parser-output .col12left td:nth-child(12),.mw-parser-output .col13left td:nth-child(13),.mw-parser-output .col14left td:nth-child(14),.mw-parser-output .col15left 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td:nth-child(7),.mw-parser-output .col8center td:nth-child(8),.mw-parser-output .col9center td:nth-child(9),.mw-parser-output .col10center td:nth-child(10),.mw-parser-output .col11center td:nth-child(11),.mw-parser-output .col12center td:nth-child(12),.mw-parser-output .col13center td:nth-child(13),.mw-parser-output .col14center td:nth-child(14),.mw-parser-output .col15center td:nth-child(15),.mw-parser-output .col16center td:nth-child(16),.mw-parser-output .col17center td:nth-child(17),.mw-parser-output .col18center td:nth-child(18),.mw-parser-output .col19center td:nth-child(19),.mw-parser-output .col20center td:nth-child(20),.mw-parser-output .col21center td:nth-child(21),.mw-parser-output .col22center td:nth-child(22),.mw-parser-output .col23center td:nth-child(23),.mw-parser-output .col24center td:nth-child(24),.mw-parser-output .col25center td:nth-child(25),.mw-parser-output .col26center td:nth-child(26),.mw-parser-output .col27center td:nth-child(27),.mw-parser-output .col28center td:nth-child(28),.mw-parser-output .col29center td:nth-child(29){text-align:center}.mw-parser-output .col1right td:nth-child(1),.mw-parser-output .col2right td:nth-child(2),.mw-parser-output .col3right td:nth-child(3),.mw-parser-output .col4right td:nth-child(4),.mw-parser-output .col5right td:nth-child(5),.mw-parser-output .col6right td:nth-child(6),.mw-parser-output .col7right td:nth-child(7),.mw-parser-output .col8right td:nth-child(8),.mw-parser-output .col9right td:nth-child(9),.mw-parser-output .col10right td:nth-child(10),.mw-parser-output .col11right td:nth-child(11),.mw-parser-output .col12right td:nth-child(12),.mw-parser-output .col13right td:nth-child(13),.mw-parser-output .col14right td:nth-child(14),.mw-parser-output .col15right td:nth-child(15),.mw-parser-output .col16right td:nth-child(16),.mw-parser-output .col17right td:nth-child(17),.mw-parser-output .col18right td:nth-child(18),.mw-parser-output .col19right td:nth-child(19),.mw-parser-output .col20right td:nth-child(20),.mw-parser-output .col21right td:nth-child(21),.mw-parser-output .col22right td:nth-child(22),.mw-parser-output .col23right td:nth-child(23),.mw-parser-output .col24right td:nth-child(24),.mw-parser-output .col25right td:nth-child(25),.mw-parser-output .col26right td:nth-child(26),.mw-parser-output .col27right td:nth-child(27),.mw-parser-output .col28right td:nth-child(28),.mw-parser-output .col29right td:nth-child(29){text-align:right}</style> <table class="wikitable defaultleft col2center"> <caption> </caption> <tbody><tr> <th>Abbreviation (full name) </th> <th>Contacts </th> <th>Typical uses </th> <th>Plug appearance </th></tr> <tr> <td><b>TS</b> (tip sleeve) </td> <td>2 </td> <td>mono audio </td> <td><span typeof="mw:File"><a href="/wiki/File:TS_connector_abbreviated.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6d/TS_connector_abbreviated.svg/117px-TS_connector_abbreviated.svg.png" decoding="async" width="117" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6d/TS_connector_abbreviated.svg/176px-TS_connector_abbreviated.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6d/TS_connector_abbreviated.svg/234px-TS_connector_abbreviated.svg.png 2x" data-file-width="410" data-file-height="70" /></a></span> </td></tr> <tr> <td rowspan="3"><b>TRS</b> (tip ring sleeve) </td> <td rowspan="3">3 </td> <td>stereo audio </td> <td rowspan="3"><span typeof="mw:File"><a href="/wiki/File:TRS_connector_abbreviated.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/TRS_connector_abbreviated.svg/117px-TRS_connector_abbreviated.svg.png" decoding="async" width="117" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/TRS_connector_abbreviated.svg/176px-TRS_connector_abbreviated.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/66/TRS_connector_abbreviated.svg/234px-TRS_connector_abbreviated.svg.png 2x" data-file-width="410" data-file-height="70" /></a></span> </td></tr> <tr> <td>mono audio (<a href="/wiki/Balanced_audio" title="Balanced audio">balanced</a>) </td></tr> <tr> <td><a href="/wiki/MIDI" title="MIDI">MIDI</a><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td rowspan="2"><b>TRRS</b> (<a href="#TRRS_standards">tip ring ring sleeve</a>) </td> <td rowspan="2">4 </td> <td>stereo headset with mono microphone </td> <td rowspan="2"><span typeof="mw:File"><a href="/wiki/File:TRRS_connector_abbreviated.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/TRRS_connector_abbreviated.svg/117px-TRRS_connector_abbreviated.svg.png" decoding="async" width="117" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/55/TRRS_connector_abbreviated.svg/176px-TRRS_connector_abbreviated.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/55/TRRS_connector_abbreviated.svg/234px-TRRS_connector_abbreviated.svg.png 2x" data-file-width="410" data-file-height="70" /></a></span> </td></tr> <tr> <td><a href="/wiki/Composite_video" title="Composite video">video</a> with stereo audio </td></tr> <tr> <td><b>TRRRS</b> (<a href="#TRRRS_standards">tip ring ring ring sleeve</a>) </td> <td>5 </td> <td>uncommon </td> <td><span typeof="mw:File"><a href="/wiki/File:TRRRS_connector_abbreviated.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3f/TRRRS_connector_abbreviated.svg/117px-TRRRS_connector_abbreviated.svg.png" decoding="async" width="117" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3f/TRRRS_connector_abbreviated.svg/176px-TRRRS_connector_abbreviated.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3f/TRRRS_connector_abbreviated.svg/234px-TRRRS_connector_abbreviated.svg.png 2x" data-file-width="410" data-file-height="70" /></a></span> </td></tr></tbody></table> <p>The sleeve is <i>usually</i> a <a href="/wiki/Ground_(electricity)" title="Ground (electricity)">common ground</a> reference <a href="/wiki/Voltage" title="Voltage">voltage</a> or return <a href="/wiki/Electric_current" title="Electric current">current</a> for signals in the <a href="/wiki/Tip_and_ring" title="Tip and ring">tip and any rings</a>. Thus, the number of transmittable <a href="/wiki/Signal" title="Signal">signals</a> is less than the number of contacts. </p><p>The outside diameter of the sleeve is <style data-mw-deduplicate="TemplateStyles:r1154941027">.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style>6.35 millimetres (<span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span> inch) for full-sized connectors, <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">3.5 mm (<span class="frac"><span class="num">1</span>⁄<span class="den">8</span></span> in) for "<a href="#Miniature_size">mini</a>" connectors, and only <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">2.5 mm (<span class="frac"><span class="num">1</span>⁄<span class="den">10</span></span> in) for "<a href="#2.5mm">sub-mini</a>" connectors. Rings are typically the same diameter as the sleeve. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Other_terms">Other terms</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=1" title="Edit section: Other terms"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The 1902 <i>International Library of Technology</i> simply uses <i>jack</i> for the female and <i>plug</i> for the male connector.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> The 1989 <i>Sound Reinforcement Handbook</i> uses <i>phone jack</i> for the female and <i>phone plug</i> for the male connector.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Robert McLeish, who worked at the <a href="/wiki/BBC" title="BBC">BBC</a>, uses <i>jack</i> or <i>jack socket</i> for the female and <i>jack plug</i> for the male connector in his 2005 book <i>Radio Production</i>.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> The <a href="/wiki/American_Society_of_Mechanical_Engineers" title="American Society of Mechanical Engineers">American Society of Mechanical Engineers</a>, as of 2007, says the more fixed <a href="/wiki/Electrical_connector" title="Electrical connector">electrical connector</a> is the jack, while the less fixed connector is the plug, <i>without regard</i> to the <a href="/wiki/Gender_of_connectors_and_fasteners" title="Gender of connectors and fasteners">gender</a> of the connector contacts.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> The <a href="/wiki/Institute_of_Electrical_and_Electronics_Engineers" title="Institute of Electrical and Electronics Engineers">Institute of Electrical and Electronics Engineers</a> in 1975 also made a standard that was withdrawn in 1997.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p><p>The intended application for a phone connector has also resulted in names such as <i>audio jack</i>, <i>headphone jack</i>, <i>stereo plug</i>, <i>microphone jack</i>, <i>aux input</i>, etc. Among audio engineers, the connector may often simply be called a <i>quarter-inch</i> to distinguish it from <a href="/wiki/XLR_connector" title="XLR connector">XLR</a>, another frequently-used audio connector. These naming variations are also used for the 3.5 mm connectors, which have been called <i>mini-phone</i>, <i>mini-stereo</i>, <i>mini jack</i>, etc. </p><p><a href="/wiki/RCA_connector" title="RCA connector">RCA connectors</a> are differently-shaped, but confusingly are similarly-named as <i>phono</i> plugs and <i>phono</i> jacks (or in the UK, <i>phono</i> sockets). 3.5 mm connectors are sometimes—counter to the connector manufacturers' nomenclature<sup id="cite_ref-not_mini_phono_7-0" class="reference"><a href="#cite_note-not_mini_phono-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>—referred to as <i>mini phonos</i>.<sup id="cite_ref-mini-phono_8-0" class="reference"><a href="#cite_note-mini-phono-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p><p>Confusion also arises because phone jack and phone plug may sometimes refer to the <a href="/wiki/RJ11" class="mw-redirect" title="RJ11">RJ11</a> and various older <a href="/wiki/Telephone_jack_and_plug" title="Telephone jack and plug">telephone sockets and plugs</a> that connect wired telephones to wall outlets. </p> <div class="mw-heading mw-heading2"><h2 id="Historical_development">Historical development</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=2" title="Edit section: Historical development"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><span class="anchor" id="6.35mm"></span>The original <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span>-inch (6.35 mm) version descends from as early as 1877 in <a href="/wiki/Boston" title="Boston">Boston</a> when the first telephone switchboard was installed<sup id="cite_ref-:0_9-0" class="reference"><a href="#cite_note-:0-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> or 1878, when an early switchboard was used for the first commercial <a href="/wiki/Telephone_switchboard" title="Telephone switchboard">manual telephone exchange</a><sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> in <a href="/wiki/New_Haven" class="mw-redirect" title="New Haven">New Haven</a> created by <a href="/wiki/George_W._Coy" class="mw-redirect" title="George W. Coy">George W. Coy</a>.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Scribner_Phone-Connector_Patent_489570.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Scribner_Phone-Connector_Patent_489570.png/220px-Scribner_Phone-Connector_Patent_489570.png" decoding="async" width="220" height="94" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Scribner_Phone-Connector_Patent_489570.png/330px-Scribner_Phone-Connector_Patent_489570.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/dd/Scribner_Phone-Connector_Patent_489570.png/440px-Scribner_Phone-Connector_Patent_489570.png 2x" data-file-width="2411" data-file-height="1027" /></a><figcaption>Mated connectors in Scribner's patent 489,570 filed on December 27, 1880</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Clausen-telephone-switchboard-plug-patent.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Clausen-telephone-switchboard-plug-patent.png/220px-Clausen-telephone-switchboard-plug-patent.png" decoding="async" width="220" height="369" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Clausen-telephone-switchboard-plug-patent.png/330px-Clausen-telephone-switchboard-plug-patent.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a8/Clausen-telephone-switchboard-plug-patent.png/440px-Clausen-telephone-switchboard-plug-patent.png 2x" data-file-width="1282" data-file-height="2152" /></a><figcaption>Henry P. Clausen's 1901 patent</figcaption></figure> <p>Charles E. Scribner filed a patent<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> in 1878 to facilitate switchboard operation using his <i>spring-jack switch</i>. In it, a conductive <a href="/wiki/Lever" title="Lever">lever</a> pushed by a <a href="/wiki/Spring_(device)" title="Spring (device)">spring</a> is normally connected to one contact. But when a cable with a conductive plug is inserted into a hole and makes contact with that lever, the lever pivots and breaks its normal connection. The receptacle was called a jack-knife because of its resemblance to a pocket <a href="https://en.wiktionary.org/wiki/clasp-knife" class="extiw" title="wiktionary:clasp-knife">clasp-knife</a>.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> This is said to be the origin of calling the receptacle a <i>jack</i>. Scribner filed a patent<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> in 1880 which removes the lever and resembles the modern connector and made improvements to switchboard design in subsequent patents<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> filed in 1882. </p> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Oldphoneplugs.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Oldphoneplugs.jpg/220px-Oldphoneplugs.jpg" decoding="async" width="220" height="227" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Oldphoneplugs.jpg/331px-Oldphoneplugs.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Oldphoneplugs.jpg/440px-Oldphoneplugs.jpg 2x" data-file-width="600" data-file-height="619" /></a><figcaption>Old connectors. On the top is a TRS socket. Plugs are below. The leftmost is a TRS plug; the rest are TS plugs.</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/File:2-conductor_male_TS_connectors.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/2-conductor_male_TS_connectors.jpg/220px-2-conductor_male_TS_connectors.jpg" decoding="async" width="220" height="139" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/2-conductor_male_TS_connectors.jpg/330px-2-conductor_male_TS_connectors.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ee/2-conductor_male_TS_connectors.jpg/440px-2-conductor_male_TS_connectors.jpg 2x" data-file-width="600" data-file-height="379" /></a><figcaption>Modern profile <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span> in TS plugs</figcaption></figure> <p>Henry P. Clausen filed a patent<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> in 1901 for improved construction of the <i>telephone switchboard-plug</i> with today's <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span> inch TS form still used on audio equipment. </p><p><a href="/wiki/Western_Electric" title="Western Electric">Western Electric</a> was the manufacturing arm of the <a href="/wiki/Bell_System" title="Bell System">Bell System</a>, and thus originated or refined most of the engineering designs, including the telephone jacks and plugs which were later adopted by other industries, including the <a href="/wiki/US_military" class="mw-redirect" title="US military">US military</a>. </p><p>By 1907, Western Electric had designed a number of models for different purposes, including:<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> </p> <table class="wikitable"> <caption> </caption> <tbody><tr> <th>Code No. </th> <th>Description </th></tr> <tr> <td>47 </td> <td>2-conductor plugs for use with type 3, 91, 99, 102, 103, 108, and 124 jacks—used for switchboards </td></tr> <tr> <td>85 </td> <td>3-conductor plugs for use with type 77 jacks—used for the operator's head telephone </td></tr> <tr> <td>103 </td> <td>twin 2-conductor plugs for use with type 91, and type 99 jacks—used for the operator's head telephone and chest transmitter (microphone) </td></tr> <tr> <td>109 </td> <td>3-conductor plugs for use with jack 92 on telephone switchboards (with the same basic shape as the modern Bantam plugs) </td></tr> <tr> <td>110 </td> <td>3-conductor plug for use with jacks 49, 117, 118, 140, and 141 on switchboards </td></tr> <tr> <td>112 </td> <td>twin 2-conductor plug for use with jacks 91 and 99—used for the operator's head telephone and chest, with a transmitter cutout key (microphone mute) </td></tr> <tr> <td>116 </td> <td>1-conductor plug for use with cordless jack boxes </td></tr> <tr> <td>126 </td> <td>3-conductor plug for use with type 132 and type 309 jacks on portable street railway sets </td></tr></tbody></table> <p>By 1950, the two main plug designs were: </p> <ul><li>WE-309 (compatible with <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">3</span>⁄<span class="den">16</span></span>-inch jacks, such as 246 jack), for use on high-density jack panels such as the 608A</li> <li>WE-310 (compatible with <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span>-inch jacks, such as the 242)</li></ul> <p>Several modern designs have descended from those earlier versions: </p> <ul><li>B-Gauge standard BPO316 (not compatible with EIA RS-453)</li> <li>EIA RS-453: <i>Dimensional, Mechanical and Electrical Characteristics Defining Phone Plugs & Jacks</i> standard of 0.206 in (5.2 mm) diameter, also found in IEC 60603-11:1992 <i>Connectors for frequencies below 3 MHz for use with printed boards – Part 11: Detail specification for concentric connectors (dimensions for free connectors and fixed connectors)</i>.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Military_variants">Military variants</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=3" title="Edit section: Military variants"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>U.S. military versions of the Western Electric plugs were initially specified in Amendment No.1, MIL-P-642, and included: </p> <ul><li>M642/1-1</li> <li>M642/1-2</li> <li>M642/2-1</li> <li>M642/2-2</li> <li>M642/4-1</li> <li>M642/4-2</li> <li>MIL-P-642/2, also known as PJ-051. (Similar to Western Electric WE-310, and thus not compatible with EIA RS-453)</li> <li>MIL-P-642/5A: Plug, Telephone (TYPE PJ-068) and Accessory Screws (1973),<sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> and MIL-DTL-642F: Plugs, Telephone, and Accessory Screws (2015),<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> with 0.206 in (5.2 mm) diameter, also known by the earlier Signal Corps PL-68 designation. These are commonly used as the microphone jack for aviation radios, and on Collins S-line and many Drake amateur radios. MIL-DTL-642F states, "This specification covers telephone plugs used in telephone (including telephone switchboard consoles), telegraph, and teletype circuits, and for connecting headsets, handsets, and microphones into communications circuits."</li></ul> <div class="mw-heading mw-heading3"><h3 id="Miniature_size">Miniature size</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=4" title="Edit section: Miniature size"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><span class="anchor" id="3.5mm"></span>The 3.5 mm or <i>miniature</i> size was originally designed in the 1950s as two-conductor connectors for earpieces on <a href="/wiki/Transistor_radio" title="Transistor radio">transistor radios</a>, and remains a standard still used today.<sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> This roughly half-sized version of the original, popularized by the Sony EFM-117J radio (released in 1964),<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup><sup class="noprint Inline-Template" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability"><span title="Self-published source. Marginally verifies that the radio exists. We need something that at least talks about the phone connector. (July 2018)">failed verification</span></a></i>]</sup> is still commonly used in portable applications and has a length of 15 millimetres (0.59 in). The three-conductor version became very popular with its application on the <a href="/wiki/Walkman" title="Walkman">Walkman</a> in 1979, as unlike earlier transistor radios, these devices had no speaker of their own; the usual way to listen to them was to plug in headphones. There is also an EIA standard for 0.141-inch miniature phone jacks. </p><p><span class="anchor" id="2.5mm"></span>The 2.5 mm or <i>sub-miniature</i> sizes were similarly popularized on small portable electronics. They often appeared next to a 3.5 mm microphone jack for a remote control on-off switch on early portable tape recorders; the microphone provided with such machines had the on-off switch and used a two-pronged connector with both the 3.5 and 2.5 mm plugs. They were also used for low-voltage DC power input from wall adapters. In the latter role, they were soon replaced by coaxial <a href="/wiki/DC_power_connector" class="mw-redirect" title="DC power connector">DC power connectors</a>. 2.5 mm phone jacks have also been used as headset jacks on mobile telephones (see <a href="#Mobile_devices">§ Mobile devices</a>). </p><p>The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">8</span></span> in and <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">10</span></span> in sizes, approximately 3.5 mm and 2.5 mm respectively in mm, though those dimensions are only approximations.<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> All sizes are now readily available in two-conductor (unbalanced mono) and three-conductor (<a href="/wiki/Balanced_audio" title="Balanced audio">balanced</a> mono or unbalanced stereo) versions. </p><p>Four-conductor versions of the 3.5 mm plug and jack are used for certain applications. A four-conductor version is often used in compact <a href="/wiki/Camcorder" title="Camcorder">camcorders</a> and portable media players, providing stereo sound and composite analog video. It is also used for a combination of stereo audio, a microphone, and controlling media playback, calls, volume and/or a <a href="/wiki/Virtual_assistant" title="Virtual assistant">virtual assistant</a> on some <a href="/wiki/Laptop_computers" class="mw-redirect" title="Laptop computers">laptop computers</a> and most <a href="#PDAs_and_mobile_phones">mobile phones</a>,<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> and some handheld <a href="/wiki/Amateur_radio" title="Amateur radio">amateur radio</a> transceivers from <a href="/wiki/Yaesu_(brand)" title="Yaesu (brand)">Yaesu</a>.<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup> Some headphone amplifiers have used it to connect balanced stereo headphones, which require two conductors per audio channel as the channels do not share a common ground.<sup id="cite_ref-29" class="reference"><a href="#cite_note-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Broadcast_usage">Broadcast usage</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=5" title="Edit section: Broadcast usage"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>By the 1940s, broadcast radio stations were using Western Electric Code No. 103 plugs and matching jacks for patching audio throughout studios. This connector was used because of its use in <a href="/wiki/AT%26T" title="AT&T">AT&T</a>'s Long Line circuits for the distribution of audio programs over the radio networks' leased telephone lines.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (January 2019)">citation needed</span></a></i>]</sup> Because of the large amount of space these patch panels required, the industry began switching to 3-conductor plugs and jacks in the late 1940s, using the WE Type 291 plug with WE type 239 jacks. The type 291 plug was used instead of the standard type 110 switchboard plug because the location of the large bulb shape on this TRS plug would have resulted in both audio signal connections being shorted together for a brief moment while the plug was being inserted and removed. The Type 291 plug avoids this by having a shorter tip.<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Patch_bay_connectors">Patch bay connectors</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=6" title="Edit section: Patch bay connectors"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Professional_audio" title="Professional audio">Professional audio</a> and the telecommunication industry use a 0.173 in (4.4 mm) diameter plug, associated with trademarked names including <style data-mw-deduplicate="TemplateStyles:r1238216509">.mw-parser-output .vanchor>:target~.vanchor-text{background-color:#b1d2ff}@media screen{html.skin-theme-clientpref-night .mw-parser-output .vanchor>:target~.vanchor-text{background-color:#0f4dc9}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .vanchor>:target~.vanchor-text{background-color:#0f4dc9}}</style><span class="vanchor"><span id="Bantam"></span><span class="vanchor-text">Bantam</span></span>, TT, Tini-Telephone, and Tini-Tel. They are not compatible with standard EIA RS-453/IEC 60603-11 <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span>-inch jacks. In addition to a slightly smaller diameter, they have a slightly different geometry.<sup id="cite_ref-soundonsound-2007-05_31-0" class="reference"><a href="#cite_note-soundonsound-2007-05-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> The three-conductor TRS versions are capable of handling balanced signals and are used in professional audio installations. Though unable to handle as much power, and less <a href="/wiki/Reliability_engineering" title="Reliability engineering">reliable</a> than a <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">6.35 mm (<span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span> in) jack,<sup id="cite_ref-32" class="reference"><a href="#cite_note-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> Bantam connectors are used for <a href="/wiki/Mixing_console" title="Mixing console">mixing console</a> and outboard <a href="/wiki/Patchbay" class="mw-redirect" title="Patchbay">patchbays</a> in recording studio and <a href="/wiki/Live_sound" class="mw-redirect" title="Live sound">live sound</a> applications, where large numbers of patch points are needed in a limited space.<sup id="cite_ref-soundonsound-2007-05_31-1" class="reference"><a href="#cite_note-soundonsound-2007-05-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup> The slightly different shape of Bantam plugs is also less likely to cause shorting as they are plugged in.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (September 2018)">citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading3"><h3 id="Less_common">Less common</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=7" title="Edit section: Less common"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Aadoublejackplug.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Aadoublejackplug.jpg/220px-Aadoublejackplug.jpg" decoding="async" width="220" height="95" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/68/Aadoublejackplug.jpg/330px-Aadoublejackplug.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/68/Aadoublejackplug.jpg/440px-Aadoublejackplug.jpg 2x" data-file-width="741" data-file-height="321" /></a><figcaption>A dual 310 patch cable, two-pin phone plug</figcaption></figure> <p>A two-pin version, known to the telecom industry as a "310 connector", consists of two <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span>-inch phone plugs at a centre spacing of <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">5</span>⁄<span class="den">8</span></span> inch (16 mm). The socket versions of these can be used with normal phone plugs provided the plug bodies are not too large, but the plug version will only mate with two sockets at <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">5</span>⁄<span class="den">8</span></span> inches centre spacing, or with line sockets, again with sufficiently small bodies. These connectors are still used today in telephone company central offices on "DSX" patch panels for <a href="/wiki/Digital_Signal_1" title="Digital Signal 1">DS1 circuits</a>. A similar type of 3.5 mm connector is often used in the armrests of older aircraft, as part of the on-board <a href="/wiki/In-flight_entertainment" title="In-flight entertainment">in-flight entertainment</a> system. Plugging a stereo plug into one of the two mono jacks typically results in the audio coming into only one ear. Adapters are available. </p><p>A short-barrelled version of the phone plug was used for 20th-century high-impedance mono headphones, and in particular those used in <a href="/wiki/World_War_II_aircraft" class="mw-redirect" title="World War II aircraft">World War II aircraft</a>. These have become rare. It is physically possible to use a normal plug in a short socket, but a short plug will neither lock into a normal socket nor complete the tip circuit. </p><p>Less commonly used sizes, both diameters and lengths, are also available from some manufacturers, and are used when it is desired to restrict the availability of matching connectors, such as 0.210-inch (5.3 mm) inside diameter jacks for fire safety communication in public buildings.<sup id="cite_ref-34" class="reference"><a href="#cite_note-34"><span class="cite-bracket">[</span>a<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Decline_of_phone_connector_sockets_in_consumer_goods">Decline of phone connector sockets in consumer goods</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=8" title="Edit section: Decline of phone connector sockets in consumer goods"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>While phone connectors remain a standard connector type in some fields, such as desktop computers, musical instrument amplification,<sup id="cite_ref-RockStock_35-0" class="reference"><a href="#cite_note-RockStock-35"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> and live audio and recording equipment,<sup id="cite_ref-Sound_Unlocked_36-0" class="reference"><a href="#cite_note-Sound_Unlocked-36"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-GEARit_37-0" class="reference"><a href="#cite_note-GEARit-37"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> they have been removed from many smartphones.<sup id="cite_ref-38" class="reference"><a href="#cite_note-38"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Digital_audio" title="Digital audio">Digital audio</a> is now common and may be transmitted via <a href="/wiki/USB_sound_card" class="mw-redirect" title="USB sound card">USB sound cards</a>, USB headphones, <a href="/wiki/Bluetooth" title="Bluetooth">Bluetooth</a>, <a href="/wiki/Audio_and_video_interfaces_and_connectors#Multiple_signals" title="Audio and video interfaces and connectors">display connectors with integrated sound</a> (e.g. <a href="/wiki/DisplayPort" title="DisplayPort">DisplayPort</a> and <a href="/wiki/HDMI" title="HDMI">HDMI</a>). Digital devices may also have internal speakers and mics. Thus the phone connector is sometimes considered redundant and a waste of space, particularly on thinner <a href="/wiki/Mobile_devices" class="mw-redirect" title="Mobile devices">mobile devices</a>. And while low-profile <a href="/wiki/Surface-mount" class="mw-redirect" title="Surface-mount">surface-mount</a> sockets <a href="/wiki/IP67" class="mw-redirect" title="IP67">waterproofed up to 1 meter</a> exist,<sup id="cite_ref-39" class="reference"><a href="#cite_note-39"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup> removing the socket entirely facilitates <a href="/wiki/Waterproofing" title="Waterproofing">waterproofing</a>.<sup id="cite_ref-Teodoro_40-0" class="reference"><a href="#cite_note-Teodoro-40"><span class="cite-bracket">[</span>39<span class="cite-bracket">]</span></a></sup> </p><p>Chinese phone manufacturers were early in not using a phone socket: first with <a href="/wiki/Oppo" title="Oppo">Oppo</a>'s Finder in July 2012 (which came packaged with <a href="/wiki/Micro-USB" class="mw-redirect" title="Micro-USB">micro-USB</a> headphones and supported <a href="/wiki/Bluetooth_headphones" class="mw-redirect" title="Bluetooth headphones">Bluetooth headphones</a>), followed by <a href="/wiki/Vivo_(technology_company)" title="Vivo (technology company)">Vivo</a>'s X5Max in 2014 and <a href="/wiki/LeEco" title="LeEco">LeEco</a> in April 2016 and <a href="/wiki/Lenovo" title="Lenovo">Lenovo</a>'s <a href="/wiki/Moto_Z" title="Moto Z">Moto Z</a> in September 2016.<sup id="cite_ref-41" class="reference"><a href="#cite_note-41"><span class="cite-bracket">[</span>40<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Apple_Inc." title="Apple Inc.">Apple</a>'s September 2016 announcement of the <a href="/wiki/IPhone_7" title="IPhone 7">iPhone 7</a> was initially mocked for removing the socket by other manufacturers like <a href="/wiki/Samsung_Electronics" title="Samsung Electronics">Samsung</a> and Google who eventually followed suit.<sup id="cite_ref-42" class="reference"><a href="#cite_note-42"><span class="cite-bracket">[</span>41<span class="cite-bracket">]</span></a></sup> The socket is also not present in some tablets and thin laptops (e.g. <a href="/wiki/Lenovo" title="Lenovo">Lenovo</a> Duet <a href="/wiki/Chromebook" title="Chromebook">Chromebook</a> and <a href="/wiki/Asus" title="Asus">Asus</a> <a href="/wiki/ZenBook" class="mw-redirect" title="ZenBook">ZenBook</a> 13 in 2020<sup id="cite_ref-43" class="reference"><a href="#cite_note-43"><span class="cite-bracket">[</span>42<span class="cite-bracket">]</span></a></sup>). </p> <div class="mw-heading mw-heading2"><h2 id="Aviation_and_US_military_connectors">Aviation and US military connectors</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=9" title="Edit section: Aviation and US military connectors"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:PJ-055_and_PJ-068_Connectors.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/24/PJ-055_and_PJ-068_Connectors.png/220px-PJ-055_and_PJ-068_Connectors.png" decoding="async" width="220" height="156" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/24/PJ-055_and_PJ-068_Connectors.png/330px-PJ-055_and_PJ-068_Connectors.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/24/PJ-055_and_PJ-068_Connectors.png/440px-PJ-055_and_PJ-068_Connectors.png 2x" data-file-width="2408" data-file-height="1712" /></a><figcaption>PJ-055 (top) and PJ-068 (bottom) General Aviation Audio Phone Connectors</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Aircraft_plug.gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/a/a1/Aircraft_plug.gif" decoding="async" width="100" height="59" class="mw-file-element" data-file-width="100" data-file-height="59" /></a><figcaption>Aviation plug type U-174/U or Nexus TP120, commonly used on military aircraft and civil helicopters</figcaption></figure> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Further information: <a href="/wiki/List_of_aviation_headset_connectors" title="List of aviation headset connectors">List of aviation headset connectors</a></div> <p>The US military uses a variety of phone connectors including <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">9</span>⁄<span class="den">32</span></span>-inch (0.281-inch, 7.14 mm) and <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span>-inch (0.25 inch, 6.35 mm) diameter plugs.<sup id="cite_ref-44" class="reference"><a href="#cite_note-44"><span class="cite-bracket">[</span>43<span class="cite-bracket">]</span></a></sup> </p><p>Commercial and <a href="/wiki/General_aviation" title="General aviation">general aviation</a> (GA) civil aircraft headsets often use a pair of phone connectors. A standard <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span>-inch (6.3 mm) 2 or 3-conductor plug, type PJ-055, is used for headphones. For the microphone, a smaller <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">3</span>⁄<span class="den">16</span></span>-inch (0.206 inch / 5.23 mm) diameter 3-conductor plug, type PJ-068, is used. </p><p>Military aircraft and civil helicopters have another type termed the U-174/U (Nexus TP-101),<sup id="cite_ref-TP-101_45-0" class="reference"><a href="#cite_note-TP-101-45"><span class="cite-bracket">[</span>44<span class="cite-bracket">]</span></a></sup> also known as U-93A/U (Nexus TP-102)<sup id="cite_ref-TP-102_46-0" class="reference"><a href="#cite_note-TP-102-46"><span class="cite-bracket">[</span>45<span class="cite-bracket">]</span></a></sup> and Nexus TP-120.<sup id="cite_ref-TP-120_47-0" class="reference"><a href="#cite_note-TP-120-47"><span class="cite-bracket">[</span>46<span class="cite-bracket">]</span></a></sup> These are also known as <i>US NATO</i> plugs. These have a 0.281 in (7.1 mm) diameter shaft with four conductors, allowing two for the headphones, and two for the microphone. Also used is the U-384/U (Nexus TP-105), which has the same diameter as the U-174/U but is slightly longer and has 5 conductors instead of 4.<sup id="cite_ref-TP-105_48-0" class="reference"><a href="#cite_note-TP-105-48"><span class="cite-bracket">[</span>47<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Bose_49-0" class="reference"><a href="#cite_note-Bose-49"><span class="cite-bracket">[</span>48<span class="cite-bracket">]</span></a></sup> </p><p>There is a confusingly similar four-conductor British connector, Type 671 (10H/18575), with a slightly larger diameter of 7.57 mm (0.298 in)<sup id="cite_ref-Type_671_datasheet_50-0" class="reference"><a href="#cite_note-Type_671_datasheet-50"><span class="cite-bracket">[</span>49<span class="cite-bracket">]</span></a></sup> used for headsets in many UK military aircraft and often referred to as a <i>UK NATO</i> or <i>European NATO</i> connector.<sup id="cite_ref-Scott_Bouch_51-0" class="reference"><a href="#cite_note-Scott_Bouch-51"><span class="cite-bracket">[</span>50<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="General_use">General use</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=10" title="Edit section: General use"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:TRS_connector.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/16/TRS_connector.JPG/220px-TRS_connector.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/16/TRS_connector.JPG/330px-TRS_connector.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/16/TRS_connector.JPG/440px-TRS_connector.JPG 2x" data-file-width="3648" data-file-height="2736" /></a><figcaption>A 3.5 mm phone connector</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:3.5mm.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3b/3.5mm.jpg/220px-3.5mm.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3b/3.5mm.jpg/330px-3.5mm.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3b/3.5mm.jpg/440px-3.5mm.jpg 2x" data-file-width="2592" data-file-height="1944" /></a><figcaption>A 3.5 mm 4-conductor TRRS phone connector</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Klinkenstecker_5-polig.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/Klinkenstecker_5-polig.jpg/220px-Klinkenstecker_5-polig.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/Klinkenstecker_5-polig.jpg/330px-Klinkenstecker_5-polig.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/11/Klinkenstecker_5-polig.jpg/440px-Klinkenstecker_5-polig.jpg 2x" data-file-width="2880" data-file-height="1620" /></a><figcaption>A 3.5 mm 5-conductor TRRRS phone connector</figcaption></figure> <p>In the most common arrangement, consistent with the original intention of the design, the male plug is connected to a cable, and the female socket is mounted in a piece of equipment. A considerable variety of line plugs and panel sockets is available, including plugs suiting various cable sizes, right-angle plugs, and both plugs and sockets in a variety of price ranges and with current capacities up to 15 <a href="/wiki/Ampere" title="Ampere">amperes</a> for certain heavy-duty <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span> in versions intended for <a href="/wiki/Loudspeaker" title="Loudspeaker">loudspeaker</a> connections.<sup id="cite_ref-52" class="reference"><a href="#cite_note-52"><span class="cite-bracket">[</span>51<span class="cite-bracket">]</span></a></sup> </p><p>Common uses of phone plugs and their matching sockets include: </p> <ul><li><a href="/wiki/Headphone" class="mw-redirect" title="Headphone">Headphone</a> and <a href="/wiki/Earphone" class="mw-redirect" title="Earphone">earphone</a> jacks on a wide range of equipment. 6.35 mm (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span> in) plugs are common on home and professional audio equipment, while 3.5 mm plugs are nearly universal for portable audio equipment and headphones. 2.5 mm plugs are not as common, but are used on communication equipment such as <a href="/wiki/Cordless_phone" class="mw-redirect" title="Cordless phone">cordless phones</a>, mobile phones, and <a href="/wiki/Two-way_radio" title="Two-way radio">two-way radios</a>, especially in the earliest years of the 21st century before the 3.5 mm became standard on mobile phones. The use of headphone jacks in <a href="/wiki/Smartphone" title="Smartphone">smartphones</a> is declining as of 2020<sup class="plainlinks noexcerpt noprint asof-tag update" style="display:none;"><a class="external text" href="https://en.wikipedia.org/w/index.php?title=Phone_connector_(audio)&action=edit">[update]</a></sup> in favor of <a href="/wiki/USB-C" title="USB-C">USB-C</a> connectors and wireless <a href="/wiki/Bluetooth" title="Bluetooth">Bluetooth</a> solutions.</li> <li>Consumer electronics devices such as <a href="/wiki/Digital_cameras" class="mw-redirect" title="Digital cameras">digital cameras</a>, <a href="/wiki/Camcorders" class="mw-redirect" title="Camcorders">camcorders</a>, and <a href="/wiki/Portable_DVD_player" title="Portable DVD player">portable DVD players</a> use 3.5 mm connectors for <a href="/wiki/Composite_video" title="Composite video">composite video</a> and audio output. Typically, a TRS connection is used for mono unbalanced audio plus video, and a TRRS connection for stereo unbalanced audio plus analog video. Cables designed for this use are often terminated with RCA connectors on the other end. A combined video/audio jack is also present on some computers; several generations of the <a href="/wiki/Raspberry_Pi" title="Raspberry Pi">Raspberry Pi</a> have analog audio and video from the same jack, and Sony also used this style of connection as the TV-out on some models of <a href="/wiki/Vaio" title="Vaio">Vaio</a> laptop.</li> <li>Hands-free sets and headsets often use 3.5 mm or 2.5 mm connectors. TRS connectors are used for mono audio out and an unbalanced microphone (with a shared ground). Four-conductor TRRS phone connectors add an additional audio channel for stereo output. TRRS connectors used for this purpose are sometimes interoperable with TRS connectors, depending on how the contacts are used.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (February 2021)">citation needed</span></a></i>]</sup></li> <li><a href="/wiki/Microphone" title="Microphone">Microphone</a> inputs on tape and cassette recorders, sometimes with remote control switching on the ring, on early, monaural cassette recorders mostly a dual-pin version consisting of a 3.5 mm TS for the microphone and a 2.5 mm TS for remote control which switches the recorder's power supply.</li> <li>Musical instruments, such as guitars, digital keyboards and electronic drum kits – along with associated audio equipment such as amplifiers and effects units – generally use 6.35mm TS connectors.<sup id="cite_ref-RockStock_35-1" class="reference"><a href="#cite_note-RockStock-35"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Sound_Unlocked_36-1" class="reference"><a href="#cite_note-Sound_Unlocked-36"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup></li> <li>Patching points (<a href="/wiki/Insert_(effects_processing)" title="Insert (effects processing)">insert points</a>) on a wide range of equipment. An unusual example is the <a href="/wiki/Enigma_machine" title="Enigma machine">Enigma machine</a>, which featured a <a href="/wiki/Plugboard" title="Plugboard">plugboard</a> as part of its encryption system.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Computer_sound">Computer sound</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=11" title="Edit section: Computer sound"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Intel_High_Definition_Audio" title="Intel High Definition Audio">Intel High Definition Audio</a>, <a href="/wiki/AC%2797" title="AC'97">AC'97</a>, and <a href="/wiki/Sound_card#Color_codes" title="Sound card">Sound card § Color codes</a></div> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Desktop_sound_connectors.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Desktop_sound_connectors.svg/147px-Desktop_sound_connectors.svg.png" decoding="async" width="147" height="221" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Desktop_sound_connectors.svg/221px-Desktop_sound_connectors.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bf/Desktop_sound_connectors.svg/294px-Desktop_sound_connectors.svg.png 2x" data-file-width="207" data-file-height="311" /></a><figcaption><a href="/wiki/Sound_card#Color_codes" title="Sound card">Color coded soundcard</a> sockets which may be found on the back panel of a personal computer. </figcaption></figure><figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Audio-TRS-Mini-Plug.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8b/Audio-TRS-Mini-Plug.jpg/147px-Audio-TRS-Mini-Plug.jpg" decoding="async" width="147" height="96" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8b/Audio-TRS-Mini-Plug.jpg/221px-Audio-TRS-Mini-Plug.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8b/Audio-TRS-Mini-Plug.jpg/294px-Audio-TRS-Mini-Plug.jpg 2x" data-file-width="2260" data-file-height="1480" /></a><figcaption>This connector's color indicates it should plug into a computer's line audio out socket</figcaption></figure><p>Any number of 3.5 mm sockets for input and output may be found on <a href="/wiki/Personal_computers" class="mw-redirect" title="Personal computers">personal computers</a>, either from <a href="/wiki/Sound_card#Integrated_sound_hardware_on_PC_motherboards" title="Sound card">integrated sound hardware</a> common on <a href="/wiki/Motherboards" class="mw-redirect" title="Motherboards">motherboards</a> or from insertable <a href="/wiki/Sound_cards" class="mw-redirect" title="Sound cards">sound cards</a>. The <a href="/wiki/PC_System_Design_Guide#Color-coding_scheme_for_connectors_and_ports" title="PC System Design Guide">1999 PC System Design Guide's color code</a> for 3.5 mm TRS sockets is common, which assigns pink for <i>microphone</i>, light blue for <i>line in</i>, and lime for <i>line level</i>. <a href="/wiki/AC%2797" title="AC'97">AC'97</a> and its 2004 successor <a href="/wiki/Intel_High_Definition_Audio" title="Intel High Definition Audio">Intel High Definition Audio</a> have been widely adopted specifications that, while not mandating physical sockets, do provide specifications for a <a href="/wiki/Intel_High_Definition_Audio#Front_panel_connector" title="Intel High Definition Audio">front panel connector</a> with pin assignments for two ports with jack detection. Front panels commonly have a stereo output socket for headphones and (slightly less commonly) a stereo input socket for a mic. The back panel may have additional sockets, most commonly for <i>line out</i>, <i>mic</i>, <i>line in</i>, and less commonly for multiple <a href="/wiki/Surround_sound" title="Surround sound">surround sound</a> outs. <a href="/wiki/Laptops" class="mw-redirect" title="Laptops">Laptops</a> and <a href="/wiki/Tablet_computer" title="Tablet computer">tablets</a> tend to have fewer sockets than <a href="/wiki/Desktop_computer" title="Desktop computer">desktops</a> due to size constraints. </p><div class="mw-heading mw-heading3"><h3 id="Microphone_power">Microphone power</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=12" title="Edit section: Microphone power"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Some computers include a 3.5 mm TRS socket for mono microphone that delivers a 5 V <a href="/wiki/Bias_voltage" class="mw-redirect" title="Bias voltage">bias voltage</a> on the ring to power an <a href="/wiki/Electret_microphone" title="Electret microphone">electret microphone</a>'s integrated <a href="/wiki/Buffer_amplifier" title="Buffer amplifier">buffer amplifier</a>, though details depend on the manufacturer.<sup id="cite_ref-53" class="reference"><a href="#cite_note-53"><span class="cite-bracket">[</span>52<span class="cite-bracket">]</span></a></sup> The <a href="/wiki/Apple_Inc" class="mw-redirect" title="Apple Inc">Apple</a> <a href="/wiki/PlainTalk" title="PlainTalk">PlainTalk</a> microphone socket is a historical variant that accepts either a 3.5 mm <a href="/wiki/Line-level" class="mw-redirect" title="Line-level">line</a> input or an elongated 3.5 mm TRS plug whose tip carries the amplifier's power. </p> <div class="mw-heading mw-heading3"><h3 id="TRRS_headset_sockets">TRRS headset sockets</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=13" title="Edit section: TRRS headset sockets"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Some newer computers, especially laptops, have 3.5 mm TRRS headset sockets, which are compatible with phone headsets and may be distinguished by a headset icon instead of the usual headphones or microphone icons. These are particularly used for <a href="/wiki/Voice_over_IP" title="Voice over IP">voice over IP</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Surround_sound">Surround sound</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=14" title="Edit section: Surround sound"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Sound cards that output <a href="/wiki/5.1_surround_sound" title="5.1 surround sound">5.1 surround sound</a> have three sockets to accommodate six channels: front left and right; surround left and right; and center and subwoofer. 6.1 and 7.1 channel sound cards from Creative Labs, however, use a single three-conductor socket (for the <i>front</i> speakers) and two four-conductor sockets.<sup id="cite_ref-54" class="reference"><a href="#cite_note-54"><span class="cite-bracket">[</span>b<span class="cite-bracket">]</span></a></sup> This is to accommodate rear-center (6.1) or rear left and right (7.1) channels without the need for additional sockets on the sound card. </p> <div class="mw-heading mw-heading3"><h3 id="Combined_TRS_and_TOSLINK">Combined TRS and TOSLINK</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=15" title="Edit section: Combined TRS and TOSLINK"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Some portable computers have a combined 3.5 mm TRS/<a href="/wiki/TOSLINK" title="TOSLINK">TOSLINK</a> jack, supporting stereo audio output using either a TRS connector or TOSLINK (stereo or 5.1 <a href="/wiki/Dolby_Digital" title="Dolby Digital">Dolby Digital</a>/<a href="/wiki/DTS_(sound_system)" class="mw-redirect" title="DTS (sound system)">DTS</a>) digital output using a suitable optical adapter. Most iMac computers have this digital/analog combo output feature as standard, with early MacBooks having two ports, one for analog/digital audio input and the other for output. Support for input was dropped on various later models<sup id="cite_ref-55" class="reference"><a href="#cite_note-55"><span class="cite-bracket">[</span>53<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-56" class="reference"><a href="#cite_note-56"><span class="cite-bracket">[</span>54<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Compatibility_for_different_numbers_of_rings">Compatibility for different numbers of rings</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=16" title="Edit section: Compatibility for different numbers of rings"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The original application for the 6.35 mm (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span> in) phone jack was in manual telephone exchanges.<sup id="cite_ref-ParekhRanjan2006_57-0" class="reference"><a href="#cite_note-ParekhRanjan2006-57"><span class="cite-bracket">[</span>55<span class="cite-bracket">]</span></a></sup> Many different configurations of these phone plugs were used, some accommodating five or more conductors, with several tip profiles. Of these many varieties, only the two-conductor version with a rounded tip profile was compatible between different manufacturers, and this was the design that was at first adopted for use with <a href="/wiki/Microphone" title="Microphone">microphones</a>, electric guitars, <a href="/wiki/Headphones" title="Headphones">headphones</a>, <a href="/wiki/Loudspeaker" title="Loudspeaker">loudspeakers</a>, and other <a href="/wiki/Audio_equipment" title="Audio equipment">audio equipment</a>. </p><p>When a three-conductor version of the 6.35 mm plug was introduced for use with stereo headphones, it was given a sharper tip profile to make it possible to manufacture jacks that would accept only stereo plugs, to avoid short-circuiting the right channel of the amplifier. This attempt has long been abandoned, and now the convention is that all plugs fit all sockets of the same size, regardless of whether they are balanced or unbalanced, mono or stereo. Most 6.35 mm plugs, mono or stereo, now have the profile of the original stereo plug, although a few rounded mono plugs are still produced. The profiles of stereo miniature and sub-miniature plugs have always been identical to the mono plugs of the same size. </p><p>The results of this physical compatibility are: </p> <ul><li>If a <b>2</b>-conductor <i>plug</i> is inserted into a <b>3</b>-conductor <i>socket</i>, then the socket's ring is <a href="/wiki/Short_circuit" title="Short circuit">shorted</a> to ground, thus any signal sent from that socket's ring is lost. Equipment not designed for this short might, for instance, damage an <a href="/wiki/Audio_amplifier" class="mw-redirect" title="Audio amplifier">audio amplifier</a> channel.</li> <li>If a <b>3</b>-conductor <i>plug</i> is connected to a <b>2</b>-conductor <i>socket</i>, normally the result is to leave the ring of the plug unconnected. This open circuit is potentially dangerous to equipment using <a href="/wiki/Vacuum_tube" title="Vacuum tube">vacuum tubes</a>, but most solid-state devices will tolerate an open condition.</li></ul> <p>Equipment aware of this possible shorting allows, for instance: </p> <ul><li>Mono equipment receiving stereo output will simply use the left (tip) channel as the mono input signal and lose the right (ring) channel of the stereo audio.</li> <li>The positive (tip) component of a balanced signal will be received, though without the full benefits of balanced audio, since the signal's negative (ring) component will be lost.</li></ul> <p>Some devices for an even higher number of rings <i>might possibly</i> be <a href="/wiki/Backwards-compatible" class="mw-redirect" title="Backwards-compatible">backwards-compatible</a> with an opposite-gendered device with fewer rings, or may cause damage. For example, 3.5 mm TRRS sockets that accept TRRS headsets (stereo headphones with a mic) are often compatible with standard TRS stereo headphones, whereby the contact that expects a mic signal will instead simply become shorted to ground and thus will provide a zero signal. Conversely, those TRRS headsets can plug into TRS sockets, in which case its speakers may still work even though its mic won't work (the mic's signal contact will be disconnected).<sup id="cite_ref-58" class="reference"><a href="#cite_note-58"><span class="cite-bracket">[</span>56<span class="cite-bracket">]</span></a></sup> </p><p>Because of a lack of standardization in the past regarding the dimensions (length) given to the ring conductor and the insulating portions on either side of it in 6.35 mm (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span> in) phone connectors and the width of the conductors in different brands and generations of sockets, there are occasional issues with compatibility between differing brands of plug and socket. This can result in a contact in the socket bridging (shorting) the ring and sleeve contacts on a phone connector. </p> <div class="mw-heading mw-heading2"><h2 id="Video">Video</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=17" title="Edit section: Video"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:TRRS_3.5mm_-_2_length_variants.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/en/thumb/e/ed/TRRS_3.5mm_-_2_length_variants.jpg/220px-TRRS_3.5mm_-_2_length_variants.jpg" decoding="async" width="220" height="164" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/e/ed/TRRS_3.5mm_-_2_length_variants.jpg/330px-TRRS_3.5mm_-_2_length_variants.jpg 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/e/ed/TRRS_3.5mm_-_2_length_variants.jpg/440px-TRRS_3.5mm_-_2_length_variants.jpg 2x" data-file-width="1372" data-file-height="1024" /></a><figcaption>Different length 3.5 mm TRRS connectors</figcaption></figure> <p>Equipment requiring video with stereo audio input or output sometimes uses 3.5 mm TRRS connectors. Two incompatible variants exist, of 15 millimetres (0.59 in) and 17 mm (0.67 in) length, and using the wrong variant may either simply not work, or could cause physical damage. </p><p>Attempting to fully insert the longer (17 mm) plug into a receptacle designed for the shorter (15 mm) plug may damage the receptacle, and may damage any electronics located immediately behind the receptacle. However, partially inserting the plug will work as the tip/ring/ring distances are the same for both variants. </p><p>A shorter plug in a socket designed for the longer connector may not be retained firmly and may result in wrong signal routing or a short circuit inside the equipment (e.g. the plug tip may cause the contacts inside the receptacle – tip/ring 1, etc. – to short together). </p><p>The shorter 15 mm TRRS variant is more common and physically compatible with standard 3.5 mm TRS and TS connectors. </p> <div class="mw-heading mw-heading2"><h2 id="Recording_equipment">Recording equipment</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=18" title="Edit section: Recording equipment"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Jackplug-wiring.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5e/Jackplug-wiring.svg/220px-Jackplug-wiring.svg.png" decoding="async" width="220" height="344" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5e/Jackplug-wiring.svg/330px-Jackplug-wiring.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5e/Jackplug-wiring.svg/440px-Jackplug-wiring.svg.png 2x" data-file-width="1690" data-file-height="2646" /></a><figcaption>Stereo devices which use "plug-in power": the electret capsules are wired in this way.</figcaption></figure> <p>Many small video cameras, laptops, recorders and other consumer devices use a 3.5 mm microphone connector for attaching a microphone to the system. These fall into three categories:<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (May 2022)">citation needed</span></a></i>]</sup> </p> <ul><li>Devices that use an unpowered microphone: usually a cheap <a href="/wiki/Dynamic_microphone" class="mw-redirect" title="Dynamic microphone">dynamic</a> or <a href="/wiki/Piezoelectric_microphone" class="mw-redirect" title="Piezoelectric microphone">piezoelectric microphone</a>. The microphone generates its own voltage and needs no power.</li> <li>Devices that use a self-powered microphone: usually a <a href="/wiki/Condenser_microphone" class="mw-redirect" title="Condenser microphone">condenser microphone</a> with an internal battery-powered amplifier.</li> <li>Devices that use a <i>plug-in powered</i> microphone: an <a href="/wiki/Electret_microphone" title="Electret microphone">electret microphone</a> containing an internal <a href="/wiki/FET_amplifier" title="FET amplifier">FET amplifier</a>. These provide a good quality signal in a very small microphone. However, the internal FET needs a DC power supply, which is provided as a bias voltage for an internal preamp transistor. Plug-in power is supplied on the same line as the audio signal, using an <a href="/wiki/RC_filter" class="mw-redirect" title="RC filter">RC filter</a>. The DC bias voltage supplies the FET amplifier (at a low current), while the capacitor decouples the DC supply from the AC input to the recorder. Typically, V=1.5 V, R=1 kΩ, C=47 μF. If a recorder provides plug-in power, and the microphone does not need it, everything will usually work well. In the converse case (recorder provides no power; microphone needs power), no sound will be recorded.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Mobile_devices">Mobile devices</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=19" title="Edit section: Mobile devices"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:IPod_and_iPhone_audio_plugs.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7d/IPod_and_iPhone_audio_plugs.JPG/220px-IPod_and_iPhone_audio_plugs.JPG" decoding="async" width="220" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7d/IPod_and_iPhone_audio_plugs.JPG/330px-IPod_and_iPhone_audio_plugs.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7d/IPod_and_iPhone_audio_plugs.JPG/440px-IPod_and_iPhone_audio_plugs.JPG 2x" data-file-width="1522" data-file-height="1243" /></a><figcaption>All <a href="/wiki/IPhone" title="IPhone">iPhone</a> models from the first generation to the 6S and SE (first generation) use a four-conductor (TRRS) phone connector (center) for a wired headset.</figcaption></figure> <p>Three- or four-conductor (TRS or TRRS) 2.5 mm and 3.5 mm sockets were common on older cell phones and <a href="/wiki/Smartphone" title="Smartphone">smartphones</a> respectively, providing mono (three-conductor) or stereo (four-conductor) sound and a microphone input, together with signaling (e.g., push a button to answer a call). These are used both for <a href="/wiki/Handsfree" title="Handsfree">handsfree</a> <a href="/wiki/Headset_(audio)" class="mw-redirect" title="Headset (audio)">headsets</a> and for stereo headphones. </p><p>3.5 mm TRRS (stereo-plus-mic) sockets became particularly common on <a href="/wiki/Smartphones" class="mw-redirect" title="Smartphones">smartphones</a>, and have been used by Nokia and others since 2006, and as mentioned in the compatibility section, they are often compatible with standard 3.5 mm stereo headphones. Many computers, especially laptops, also include a TRRS headset socket compatible with the headsets intended for smartphones. </p><p>The four conductors of a TRRS connector are assigned to different purposes by different manufacturers. Any 3.5 mm plug can be plugged mechanically into any socket, but many combinations are electrically incompatible. For example, plugging TRRS headphones into a TRS headset socket, a TRS headset into a TRRS socket, or plugging TRRS headphones from one manufacturer into a TRRS socket from another may not function correctly, or at all. Mono audio will usually work, but stereo audio or the microphone may not work, or the pause/play controls may be inactive, as is common when trying to use headphones with controls for iPhones on an Android device, or <i>vice versa</i>. </p> <div class="mw-heading mw-heading3"><h3 id="TRRS_standards"><span class="anchor" id="TRRS"></span>TRRS standards</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=20" title="Edit section: TRRS standards"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Two different forms are frequently found. Both place left audio on the tip and right audio on the first ring, same as stereo connectors. They differ in the placement of the microphone and return contacts. </p><p>The <a href="/wiki/OMTP" class="mw-redirect" title="OMTP">OMTP</a> standard places the ground return on the sleeve and the microphone on the second ring.<sup id="cite_ref-59" class="reference"><a href="#cite_note-59"><span class="cite-bracket">[</span>57<span class="cite-bracket">]</span></a></sup> It has been accepted as a national Chinese standard YDT 1885–2009. In the West, it is mostly used on older devices, such as older Nokia mobiles, older <a href="/wiki/Samsung" title="Samsung">Samsung</a> smartphones, and some <a href="/wiki/Sony_Ericsson" class="mw-redirect" title="Sony Ericsson">Sony Ericsson</a> phones.<sup id="cite_ref-60" class="reference"><a href="#cite_note-60"><span class="cite-bracket">[</span>58<span class="cite-bracket">]</span></a></sup> It is widely used in products meant for the Chinese market.<sup id="cite_ref-61" class="reference"><a href="#cite_note-61"><span class="cite-bracket">[</span>59<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:2_62-0" class="reference"><a href="#cite_note-:2-62"><span class="cite-bracket">[</span>60<span class="cite-bracket">]</span></a></sup> Headsets using this wiring are sometimes indicated by black plastic separators between the rings.<sup id="cite_ref-:1_63-0" class="reference"><a href="#cite_note-:1-63"><span class="cite-bracket">[</span>61<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:2_62-1" class="reference"><a href="#cite_note-:2-62"><span class="cite-bracket">[</span>60<span class="cite-bracket">]</span></a></sup> </p><p>The <a href="/wiki/CTIA_(organization)" title="CTIA (organization)">CTIA</a>/<a href="/wiki/American_Headset_Jack" class="mw-redirect" title="American Headset Jack">AHJ</a> standard reverses these contacts, putting the microphone on the sleeve. It is used by <a href="/wiki/Apple_Inc." title="Apple Inc.">Apple</a>'s <a href="/wiki/IPhone" title="IPhone">iPhone</a> line until the <a href="/wiki/IPhone_6S" class="mw-redirect" title="IPhone 6S">6S</a> and <a href="/wiki/IPhone_SE_(1st_generation)" title="IPhone SE (1st generation)">SE (1st)</a>. In the West, these products made it the de facto TRRS standard.<sup id="cite_ref-64" class="reference"><a href="#cite_note-64"><span class="cite-bracket">[</span>62<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-65" class="reference"><a href="#cite_note-65"><span class="cite-bracket">[</span>63<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-66" class="reference"><a href="#cite_note-66"><span class="cite-bracket">[</span>64<span class="cite-bracket">]</span></a></sup> It is now used by <a href="/wiki/HTC" title="HTC">HTC</a> devices, recent <a href="/wiki/Samsung" title="Samsung">Samsung</a>, <a href="/wiki/Nokia" title="Nokia">Nokia</a>, and <a href="/wiki/Sony_Mobile" title="Sony Mobile">Sony phones</a>, among others. It has the disadvantage that the microphone gets shorted to ground if the device has a metal body and the sleeve has a flange, touching the body. Headsets using this wiring are sometimes indicated by white plastic separators between the rings.<sup id="cite_ref-:1_63-1" class="reference"><a href="#cite_note-:1-63"><span class="cite-bracket">[</span>61<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-:2_62-2" class="reference"><a href="#cite_note-:2-62"><span class="cite-bracket">[</span>60<span class="cite-bracket">]</span></a></sup> </p><p>If a CTIA headset is connected to an OMTP device, the missing ground effectively connects the speakers in series, out-of-phase. This removes the singer's voice on typical popular music recordings, which place the singers in the center. If the main microphone button is held down, shorting across the microphone and restoring ground, the correct sound may be audible.<sup id="cite_ref-:2_62-3" class="reference"><a href="#cite_note-:2-62"><span class="cite-bracket">[</span>60<span class="cite-bracket">]</span></a></sup> </p> <table class="wikitable"> <tbody><tr> <th>Standard </th> <th>Tip </th> <th>Ring 1 </th> <th>Ring 2 </th> <th>Sleeve </th> <th>Devices using this standard </th></tr> <tr> <th><a href="/wiki/CTIA_(organization)" title="CTIA (organization)">CTIA</a>, <a href="/wiki/American_Headset_Jack" class="mw-redirect" title="American Headset Jack">AHJ</a> </th> <td>Left audio </td> <td>Right audio </td> <td>Ground </td> <td>Microphone </td> <td>Most <a href="/wiki/Android_(operating_system)" title="Android (operating system)">Android</a> devices.<sup id="cite_ref-67" class="reference"><a href="#cite_note-67"><span class="cite-bracket">[</span>65<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Apple_Inc." title="Apple Inc.">Apple</a>, <a href="/wiki/HTC" title="HTC">HTC</a>, <a href="/wiki/LG" title="LG">LG</a>, <a href="/wiki/BlackBerry" title="BlackBerry">BlackBerry</a>, latest <a href="/wiki/Nokia" title="Nokia">Nokia</a> (<span class="cleanup-needed-content" style="padding-left:0.1em; padding-right:0.1em; color:var(--color-subtle, #54595d); border:1px solid var(--border-color-subtle, #c8ccd1);">including 1st generation Lumia as well as later models</span><sup class="noprint Inline-Template" style="margin-left:0.1em; white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Please_clarify" title="Wikipedia:Please clarify"><span title="So, specifically all of them? (November 2018)">clarification needed</span></a></i>]</sup>), latest <a href="/wiki/Samsung" title="Samsung">Samsung</a>, <a href="/wiki/Jolla" title="Jolla">Jolla</a>, <a href="/wiki/Microsoft" title="Microsoft">Microsoft</a> (including <a href="/wiki/Microsoft_Surface" title="Microsoft Surface">Surface</a>, and <a href="/wiki/Xbox_One_controller#Stereo_headset_adapter" class="mw-redirect" title="Xbox One controller">Xbox One controller</a>), Sony Playstation 4 (<a href="/wiki/DualShock_4" class="mw-redirect" title="DualShock 4">DualShock 4</a><sup id="cite_ref-68" class="reference"><a href="#cite_note-68"><span class="cite-bracket">[</span>66<span class="cite-bracket">]</span></a></sup>), Google Pixel 4a, <a href="/wiki/Librem_5" title="Librem 5">Librem 5</a> </td></tr> <tr> <th>CTIA-style AV<sup id="cite_ref-69" class="reference"><a href="#cite_note-69"><span class="cite-bracket">[</span>67<span class="cite-bracket">]</span></a></sup> </th> <td>Left audio </td> <td>Right audio </td> <td>Ground </td> <td><a href="/wiki/CVBS" class="mw-redirect" title="CVBS">CVBS</a> video </td> <td>Apple <a href="/wiki/IPod" title="IPod">iPod</a> (up to 6th generation), <a href="/wiki/Raspberry_Pi" title="Raspberry Pi">Raspberry Pi</a> (2014 onwards), <a href="/wiki/Xbox_360_E" class="mw-redirect" title="Xbox 360 E">Xbox 360 E</a>, <a href="/wiki/Zune" title="Zune">Zune</a> (defunct), some older mobile phones (including <a href="/wiki/Nokia_N93" title="Nokia N93">Nokia N93</a>, <a href="/wiki/Nokia_N95" title="Nokia N95">Nokia N95</a>,<sup id="cite_ref-70" class="reference"><a href="#cite_note-70"><span class="cite-bracket">[</span>68<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Samsung_Galaxy_S_(2010_smartphone)" class="mw-redirect" title="Samsung Galaxy S (2010 smartphone)">Samsung Galaxy S</a> GT-I9000,<sup id="cite_ref-71" class="reference"><a href="#cite_note-71"><span class="cite-bracket">[</span>69<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Danger_Hiptop#T-Mobile_Sidekick_4G_(Android/Samsung)" title="Danger Hiptop">T-Mobile Sidekick 4G</a>) </td></tr> <tr> <th><a href="/wiki/OMTP" class="mw-redirect" title="OMTP">OMTP</a> </th> <td>Left audio </td> <td>Right audio </td> <td>Microphone </td> <td>Ground </td> <td>Old Nokia and also <a href="/wiki/Nokia_Lumia" class="mw-redirect" title="Nokia Lumia">Lumia</a> starting from the 2nd generation),<sup id="cite_ref-72" class="reference"><a href="#cite_note-72"><span class="cite-bracket">[</span>70<span class="cite-bracket">]</span></a></sup> old Samsung (2012 <a href="/wiki/Chromebook" title="Chromebook">Chromebooks</a>), some old Sony Ericsson smartphones (2010 and 2011 <a href="/wiki/Sony_Xperia#Sony_Ericsson" title="Sony Xperia">Xperias</a>),<sup id="cite_ref-73" class="reference"><a href="#cite_note-73"><span class="cite-bracket">[</span>71<span class="cite-bracket">]</span></a></sup> Sony (<a href="/wiki/PlayStation_Vita" title="PlayStation Vita">PlayStation Vita</a>), <a href="/wiki/OnePlus_One" title="OnePlus One">OnePlus One</a>. </td></tr> <tr> <th><a href="/wiki/OMTP" class="mw-redirect" title="OMTP">OMTP</a>-style radios </th> <td>Speaker </td> <td>Clone </td> <td>Microphone / PTT </td> <td>Ground </td> <td><a href="/wiki/Yaesu_(brand)" title="Yaesu (brand)">Yaesu</a> FT-60R <a href="/wiki/Amateur_radio" title="Amateur radio">amateur radio</a> hand-held.<sup id="cite_ref-74" class="reference"><a href="#cite_note-74"><span class="cite-bracket">[</span>72<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-75" class="reference"><a href="#cite_note-75"><span class="cite-bracket">[</span>73<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-76" class="reference"><a href="#cite_note-76"><span class="cite-bracket">[</span>74<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <th>Video/audio 1 </th> <td>Left audio </td> <td><a href="/wiki/CVBS" class="mw-redirect" title="CVBS">CVBS</a> video </td> <td>Ground </td> <td>Right audio </td> <td>Sony and Panasonic <a href="/wiki/Camcorder" title="Camcorder">camcorders</a>. On some early Sony camcorders, this socket doubled up as a headphone socket. When a headphone plug was inserted, ring 2 was shorted to the sleeve contact and the camcorder output the right audio on ring 1.<sup id="cite_ref-77" class="reference"><a href="#cite_note-77"><span class="cite-bracket">[</span>75<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <th>Video/audio 2 </th> <td><a href="/wiki/CVBS" class="mw-redirect" title="CVBS">CVBS</a> video </td> <td>Left audio </td> <td>Right audio </td> <td>Ground </td> <td>Unknown camcorders, portable VCD and DVD players, Western Digital TV live!, some newer LG TVs. </td></tr> <tr> <th>Video/audio 3 </th> <td><a href="/wiki/CVBS" class="mw-redirect" title="CVBS">CVBS</a> video </td> <td>Left audio </td> <td>Ground </td> <td>Right audio </td> <td>Toshiba TVs </td></tr> <tr> <th>Video/audio 4 </th> <td>Left audio </td> <td>Right audio </td> <td><a href="/wiki/CVBS" class="mw-redirect" title="CVBS">CVBS</a> video </td> <td>Ground </td> <td>Grandstream GXV-3500<sup id="cite_ref-78" class="reference"><a href="#cite_note-78"><span class="cite-bracket">[</span>76<span class="cite-bracket">]</span></a></sup> </td></tr></tbody></table> <p>The 4-pole 3.5 mm connector is defined by the Japanese standard JEITA/EIAJ RC-5325A, "4-Pole miniature concentric plugs and jacks", originally published in 1993.<sup id="cite_ref-79" class="reference"><a href="#cite_note-79"><span class="cite-bracket">[</span>77<span class="cite-bracket">]</span></a></sup> 3-pole 3.5 mm TRS connectors are defined in JIS C 6560. See also JIS C 5401 and IEC 60130-8. </p><p><a href="/wiki/Apple_Inc." title="Apple Inc.">Apple</a>'s <a href="/wiki/IPod_Shuffle#2nd_generation" title="IPod Shuffle">iPod Shuffle 2G</a> reuses its TRRS socket not just for audio but also for charging and syncing over <a href="/wiki/USB" title="USB">USB</a> when docked.<sup id="cite_ref-80" class="reference"><a href="#cite_note-80"><span class="cite-bracket">[</span>78<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading4"><h4 id="Interoperability">Interoperability</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=21" title="Edit section: Interoperability"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <i>USB Type-C Cable and Connector Specification</i> specifies a mapping from a <a href="/wiki/USB-C" title="USB-C">USB-C</a> jack to a 4-pole TRRS jack, for the use of headsets, and supports both CTIA and OMTP (YD/T 1885–2009) modes.<sup id="cite_ref-81" class="reference"><a href="#cite_note-81"><span class="cite-bracket">[</span>79<span class="cite-bracket">]</span></a></sup> Some devices transparently handle many jack standards,<sup id="cite_ref-82" class="reference"><a href="#cite_note-82"><span class="cite-bracket">[</span>80<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-83" class="reference"><a href="#cite_note-83"><span class="cite-bracket">[</span>81<span class="cite-bracket">]</span></a></sup> and there are hardware implementations of this available as components.<sup id="cite_ref-84" class="reference"><a href="#cite_note-84"><span class="cite-bracket">[</span>82<span class="cite-bracket">]</span></a></sup> This is accomplished in some cases by applying a voltage to the sleeve and second ring to detect the wiring. The last two conductors may then be switched to allow a device made to one standard to be used with a headset made to the other.<sup id="cite_ref-85" class="reference"><a href="#cite_note-85"><span class="cite-bracket">[</span>83<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="TRRRS_standards"><span class="anchor" id="TRRRS"></span>TRRRS standards</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=22" title="Edit section: TRRRS standards"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A TRRRS standard for 3.5 mm connectors was developed by ITU-T.<sup id="cite_ref-86" class="reference"><a href="#cite_note-86"><span class="cite-bracket">[</span>84<span class="cite-bracket">]</span></a></sup> The standard, called P.382 (formerly P.MMIC), outlines technical requirements and test methods for a 5-conductor socket and plug configuration. Compared to the TRRS standard, TRRRS provides one extra conductor that can be used for connecting a second microphone or providing power to or from the audio accessory. </p><p>P.382 requires compliant sockets and plugs to be backward compatible with legacy TRRS and TRS connectors. Therefore, P.382-compliant TRRRS connectors should allow for seamless integration when used on new products. TRRRS connectors enable the following audio applications: active noise canceling, binaural recording and others, where dual analog microphone lines can be directly connected to a host device. It was commonly found on <a href="/wiki/Sony" title="Sony">Sony</a> phones starting with the <a href="/wiki/Xperia_Z1" class="mw-redirect" title="Xperia Z1">Xperia Z1</a>, <a href="/wiki/Sony_Xperia_XZ1" title="Sony Xperia XZ1">Xperis XZ1</a> and <a href="/wiki/Xperia_1_II" class="mw-redirect" title="Xperia 1 II">Xperia 1 II</a>. </p><p>Another TRRRS standard for 4.4 mm connectors following JEITA RC-8141C was introduced in 2015 and is used for <a href="/wiki/Balanced_audio" title="Balanced audio">balanced audio</a> connections, in particular for <a href="/wiki/Headphone" class="mw-redirect" title="Headphone">headphone</a> cables. This connector is often called a <b><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509"><span class="vanchor"><span id="Pentaconn"></span><span class="vanchor-text">Pentaconn</span></span></b> connector, following the brand name of Nippon DICS (NDICS). It is used by some Sony products like the <a href="/w/index.php?title=M1Z&action=edit&redlink=1" class="new" title="M1Z (page does not exist)">M1Z</a> Walkman of their Signature series and by some <a href="/wiki/Sennheiser" title="Sennheiser">Sennheiser</a> products like the <a href="/w/index.php?title=HD_820&action=edit&redlink=1" class="new" title="HD 820 (page does not exist)">HD 820</a> headphone or the HDV 820 DAC headphone amplifier.<sup id="cite_ref-87" class="reference"><a href="#cite_note-87"><span class="cite-bracket">[</span>85<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-88" class="reference"><a href="#cite_note-88"><span class="cite-bracket">[</span>86<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Switch_contacts">Switch contacts</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=23" title="Edit section: Switch contacts"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-Unreferenced_section plainlinks metadata ambox ambox-content ambox-Unreferenced" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">This section <b>does not <a href="/wiki/Wikipedia:Citing_sources" title="Wikipedia:Citing sources">cite</a> any <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">sources</a></b>.<span class="hide-when-compact"> Please help <a href="/wiki/Special:EditPage/Phone_connector_(audio)" title="Special:EditPage/Phone connector (audio)">improve this section</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and <a href="/wiki/Wikipedia:Verifiability#Burden_of_evidence" title="Wikipedia:Verifiability">removed</a>.</span> <span class="date-container"><i>(<span class="date">August 2007</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Small_jack_plugs.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Small_jack_plugs.jpg/220px-Small_jack_plugs.jpg" decoding="async" width="220" height="125" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Small_jack_plugs.jpg/330px-Small_jack_plugs.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/1b/Small_jack_plugs.jpg/440px-Small_jack_plugs.jpg 2x" data-file-width="1314" data-file-height="749" /></a><figcaption>Miniature phone plugs and jacks. All are 3.5 mm except the gold-plated plug, which is 2.5 mm. One of the 3.5 mm jacks is two-conductor and the others are three conductor. In this collection the tan-colored jacks have normally-closed switches.</figcaption></figure><style data-mw-deduplicate="TemplateStyles:r1273380762/mw-parser-output/.tmulti">.mw-parser-output .tmulti .multiimageinner{display:flex;flex-direction:column}.mw-parser-output .tmulti .trow{display:flex;flex-direction:row;clear:left;flex-wrap:wrap;width:100%;box-sizing:border-box}.mw-parser-output .tmulti .tsingle{margin:1px;float:left}.mw-parser-output .tmulti .theader{clear:both;font-weight:bold;text-align:center;align-self:center;background-color:transparent;width:100%}.mw-parser-output .tmulti .thumbcaption{background-color:transparent}.mw-parser-output .tmulti .text-align-left{text-align:left}.mw-parser-output .tmulti .text-align-right{text-align:right}.mw-parser-output .tmulti .text-align-center{text-align:center}@media all and (max-width:720px){.mw-parser-output .tmulti .thumbinner{width:100%!important;box-sizing:border-box;max-width:none!important;align-items:center}.mw-parser-output .tmulti .trow{justify-content:center}.mw-parser-output .tmulti .tsingle{float:none!important;max-width:100%!important;box-sizing:border-box;text-align:center}.mw-parser-output .tmulti .tsingle .thumbcaption{text-align:left}.mw-parser-output .tmulti .trow>.thumbcaption{text-align:center}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .tmulti .multiimageinner span:not(.skin-invert-image):not(.skin-invert):not(.bg-transparent) img{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .tmulti .multiimageinner span:not(.skin-invert-image):not(.skin-invert):not(.bg-transparent) img{background-color:white}}</style><div class="thumb tmulti tright"><div class="thumbinner multiimageinner" style="width:408px;max-width:408px"><div class="trow"><div class="tsingle" style="width:202px;max-width:202px"><div class="thumbimage"><span typeof="mw:File"><a href="/wiki/File:Phone_connector,_6.35_mm,_jack_with_switch_contacts-40827.jpg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/02/Phone_connector%2C_6.35_mm%2C_jack_with_switch_contacts-40827.jpg/200px-Phone_connector%2C_6.35_mm%2C_jack_with_switch_contacts-40827.jpg" decoding="async" width="200" height="113" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/02/Phone_connector%2C_6.35_mm%2C_jack_with_switch_contacts-40827.jpg/300px-Phone_connector%2C_6.35_mm%2C_jack_with_switch_contacts-40827.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/02/Phone_connector%2C_6.35_mm%2C_jack_with_switch_contacts-40827.jpg/400px-Phone_connector%2C_6.35_mm%2C_jack_with_switch_contacts-40827.jpg 2x" data-file-width="3845" data-file-height="2163" /></a></span></div><div class="thumbcaption">Phone connector, 6.35 mm, jack with switch contacts</div></div><div class="tsingle" style="width:202px;max-width:202px"><div class="thumbimage"><span typeof="mw:File"><a href="/wiki/File:Phone_connector,_6.35_mm,_jack_with_switch_contacts_and_plug_inserted-40826.jpg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/Phone_connector%2C_6.35_mm%2C_jack_with_switch_contacts_and_plug_inserted-40826.jpg/200px-Phone_connector%2C_6.35_mm%2C_jack_with_switch_contacts_and_plug_inserted-40826.jpg" decoding="async" width="200" height="112" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/Phone_connector%2C_6.35_mm%2C_jack_with_switch_contacts_and_plug_inserted-40826.jpg/300px-Phone_connector%2C_6.35_mm%2C_jack_with_switch_contacts_and_plug_inserted-40826.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/13/Phone_connector%2C_6.35_mm%2C_jack_with_switch_contacts_and_plug_inserted-40826.jpg/400px-Phone_connector%2C_6.35_mm%2C_jack_with_switch_contacts_and_plug_inserted-40826.jpg 2x" data-file-width="6025" data-file-height="3389" /></a></span></div><div class="thumbcaption">Phone connector, 6.35 mm, jack with switch contacts and plug inserted</div></div></div></div></div> <p>Panel-mounted jacks may include switch contacts. Most commonly, a mono jack is provided with one normally closed (NC) contact, which is connected to the tip (live) connection when no plug is in the socket, and disconnected when a plug is inserted. Stereo sockets commonly provide two such NC contacts, one for the tip (left channel) and one for the ring or collar (right channel). Some jacks also have such a connection on the sleeve. As this contact is usually ground, it is not much use for signal switching but could be used to indicate to electronic circuitry that the jack is in use. Less commonly, jacks may feature normally open (NO) or change-over contacts or the switch contacts may be isolated from the connector signals. </p><p>The original purpose of these contacts was for switching in telephone exchanges, for which there were many patterns. Two sets of change-over contacts, isolated from the connector contacts, were common. The more recent pattern of one NC contact for each signal path, internally attached to the connector contact, stems from their use as headphone jacks. In many amplifiers and equipment containing them, such as electronic organs, a headphone jack is provided that disconnects the loudspeakers when in use. This is done by means of these switch contacts. In other equipment, a dummy load is provided when the headphones are not connected. This is also easily provided by means of these NC contacts. </p><p>Other uses for these contacts have been found. One is to interrupt a signal path in a mixing console to <a href="/wiki/Insert_(effects_processing)" title="Insert (effects processing)">insert</a> an effects processor. This is accomplished by using one NC contact of a stereo jack to connect the tip and ring together to affect a bypass when no plug is inserted. A similar arrangement is used in patch panels for <i>normalization</i> (see <a href="/wiki/Patch_panel#Normalization" title="Patch panel">Patch panel § Normalization</a>). </p><p>Where a 3.5 mm or 2.5 mm jack is used as a DC power inlet connector, a switch contact may be used to disconnect an internal battery whenever an external power supply is connected, to prevent incorrect recharging of the battery. </p><p>To eliminate the need for a separate power switch, a standard stereo jack is used on most battery-powered guitar <a href="/wiki/Effects_pedal" class="mw-redirect" title="Effects pedal">effects pedals</a>. The internal battery has its negative terminal wired to the sleeve contact of the jack. When the user plugs in a two-conductor (mono) plug, the resulting short circuit between the sleeve and ring connects an internal battery to the unit's circuitry, ensuring that it powers up or down automatically whenever a signal lead is inserted or removed. </p> <div class="mw-heading mw-heading2"><h2 id="Design">Design</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=24" title="Edit section: Design"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Phone_Jack_Symbols.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/77/Phone_Jack_Symbols.svg/300px-Phone_Jack_Symbols.svg.png" decoding="async" width="300" height="300" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/77/Phone_Jack_Symbols.svg/450px-Phone_Jack_Symbols.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/77/Phone_Jack_Symbols.svg/600px-Phone_Jack_Symbols.svg.png 2x" data-file-width="300" data-file-height="300" /></a><figcaption>Examples of jack configurations, oriented so the plug <i>enters</i> from the right. The most common circuit configurations are the simple mono and stereo jacks (A and B); however, there are a great number of variants manufactured.<sup id="cite_ref-89" class="reference"><a href="#cite_note-89"><span class="cite-bracket">[</span>87<span class="cite-bracket">]</span></a></sup> <ol type="A"> <li>A two-conductor TS phone connector. The connection to the sleeve is the rectangle towards the right, and the connection to the tip is the line with the notch. Wiring connections are illustrated as white circles.</li> <li>A three-conductor TRS phone connector. The upper connector is the tip, as it is farther away from the sleeve. The sleeve is shown connected directly to the chassis, a typical configuration for a balanced connection. Some jacks use plastic, to isolate the sleeve from the chassis, and provide a separate sleeve connection point, as in <i>A</i>.</li> <li>This three-conductor jack has two isolated <a href="/wiki/Contact_terminology" class="mw-redirect" title="Contact terminology">SPDT switches</a> activated by a plug going into the jack, which disconnects one throw and connects the other. The white arrowheads indicate a mechanical connection, while the black arrowheads indicate an electrical connection. This configuration is useful for a device that turns on when a plug is inserted, and off otherwise, with the power routed through the switches.</li> <li>This three-conductor jack has two normally closed switches connected to the contacts themselves. This is useful for <a href="/wiki/Patch_panel#Normalization" title="Patch panel">patch panel normalization</a>. Another common use is as stereo headphone jack that shuts off the default output (speakers) when the connector is plugged in.</li> </ol></figcaption></figure> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Jack_plug.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/93/Jack_plug.png/220px-Jack_plug.png" decoding="async" width="220" height="149" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/93/Jack_plug.png/330px-Jack_plug.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/93/Jack_plug.png/440px-Jack_plug.png 2x" data-file-width="1280" data-file-height="864" /></a><figcaption><ol><li><b>Sleeve:</b> Usually ground</li><li><b>Ring:</b> Right-hand channel for stereo signals, negative polarity for balanced mono signals, power supply for power-using mono signal sources</li> <li><b>Tip</b>: Left-hand channel for stereo signals, positive polarity for balanced mono signals, signal line for unbalanced mono signals</li><li><b>Insulating rings</b></li> </ol></figcaption></figure> <p>The connector assembly is usually made by one or more hollow and one solid pin. The jack is then assembled with pins separated by an <a href="/wiki/Insulator_(electricity)" title="Insulator (electricity)">insulating</a> material. </p><p>Connectors that are tarnished, or that were not manufactured within tight tolerances, are prone to cause poor connections.<sup id="cite_ref-soundonsound-2005-06_90-0" class="reference"><a href="#cite_note-soundonsound-2005-06-90"><span class="cite-bracket">[</span>88<span class="cite-bracket">]</span></a></sup> Depending upon the surface material of the connectors, tarnished ones can be cleaned with a burnishing agent (for solid brass contacts typical) or contact cleaner (for plated contacts).<sup id="cite_ref-soundonsound-2005-06_90-1" class="reference"><a href="#cite_note-soundonsound-2005-06-90"><span class="cite-bracket">[</span>88<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Audio_signals">Audio signals</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=25" title="Edit section: Audio signals"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable"> <tbody><tr> <th rowspan="2">Pin </th> <th colspan="2">Unbalanced mono </th> <th rowspan="2">Balanced mono <br />in/out (simplex)<sup id="cite_ref-91" class="reference"><a href="#cite_note-91"><span class="cite-bracket">[</span>89<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Mackie_94-0" class="reference"><a href="#cite_note-Mackie-94"><span class="cite-bracket">[</span>A<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-QSC_96-0" class="reference"><a href="#cite_note-QSC-96"><span class="cite-bracket">[</span>B<span class="cite-bracket">]</span></a></sup> </th> <th rowspan="2">Unbalanced <br />stereo </th></tr> <tr> <th>In/out (simplex) </th> <th>Insert<sup id="cite_ref-97" class="reference"><a href="#cite_note-97"><span class="cite-bracket">[</span>93<span class="cite-bracket">]</span></a></sup> </th></tr> <tr> <td>Tip</td> <td>Signal</td> <td>Send or return signal</td> <td>Positive, <i>hot</i></td> <td>Left channel </td></tr> <tr> <td>Ring</td> <td>Ground, or <i>no connection</i></td> <td>Return or send signal</td> <td>Negative, <i>cold</i></td> <td>Right channel </td></tr> <tr> <td>Sleeve </td> <td colspan="4" style="text-align:center;">Ground<sup id="cite_ref-Whirlwind_99-0" class="reference"><a href="#cite_note-Whirlwind-99"><span class="cite-bracket">[</span>C<span class="cite-bracket">]</span></a></sup> </td></tr></tbody></table> <dl><dt>Notes</dt> <dd></dd></dl> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-upper-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-Mackie-94"><span class="mw-cite-backlink"><b><a href="#cite_ref-Mackie_94-0">^</a></b></span> <span class="reference-text">The first version of the popular <a href="/wiki/Mackie_1604" class="mw-redirect" title="Mackie 1604">Mackie 1604</a> mixer, the CR1604, used a tip negative, ring positive jack wiring scheme on the main left and right outputs.<sup id="cite_ref-92" class="reference"><a href="#cite_note-92"><span class="cite-bracket">[</span>90<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-93" class="reference"><a href="#cite_note-93"><span class="cite-bracket">[</span>91<span class="cite-bracket">]</span></a></sup></span> </li> <li id="cite_note-QSC-96"><span class="mw-cite-backlink"><b><a href="#cite_ref-QSC_96-0">^</a></b></span> <span class="reference-text">Early <a href="/wiki/QSC_Audio_Products" title="QSC Audio Products">QSC</a> amplifiers used a tip negative, ring positive input wiring scheme.<sup id="cite_ref-95" class="reference"><a href="#cite_note-95"><span class="cite-bracket">[</span>92<span class="cite-bracket">]</span></a></sup></span> </li> <li id="cite_note-Whirlwind-99"><span class="mw-cite-backlink"><b><a href="#cite_ref-Whirlwind_99-0">^</a></b></span> <span class="reference-text">Whirlwind Line Balancer/Splitters do not use the sleeve as a conductor on their unbalanced 6.35 mm/<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span> in TRS phone input. Tip and ring are wired to the transformer's two terminals; the sleeve is not connected.<sup id="cite_ref-98" class="reference"><a href="#cite_note-98"><span class="cite-bracket">[</span>94<span class="cite-bracket">]</span></a></sup></span> </li> </ol></div></div> <div class="mw-heading mw-heading3"><h3 id="Balanced_audio">Balanced audio</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=26" title="Edit section: Balanced audio"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>When a phone connector is used to make a <a href="/wiki/Balanced_audio" title="Balanced audio">balanced audio</a> connection, the two active conductors are used for <a href="/wiki/Differential_signaling" class="mw-redirect" title="Differential signaling">differential</a> versions of a monaural signal. The ring, used for the right channel in stereo systems, is used instead for the inverting input. </p> <div class="mw-heading mw-heading4"><h4 id="Advantages">Advantages</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=27" title="Edit section: Advantages"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Where space is a premium, TRS connectors offer a more compact alternative to <a href="/wiki/XLR_connector" title="XLR connector">XLR connectors</a>, and so are common in small audio <a href="/wiki/Mixing_desk" class="mw-redirect" title="Mixing desk">mixing desks</a>. </p><p>Another advantage offered by TRS connectors used for balanced microphone inputs is that a standard unbalanced signal lead using a TS phone jack can simply be plugged into such an input. The inverting input on the ring contact gets correctly grounded when it makes contact with the plug body. </p> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Sony_NW-ZX300_DAP_headphone_outputs.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/Sony_NW-ZX300_DAP_headphone_outputs.jpg/220px-Sony_NW-ZX300_DAP_headphone_outputs.jpg" decoding="async" width="220" height="70" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/43/Sony_NW-ZX300_DAP_headphone_outputs.jpg/330px-Sony_NW-ZX300_DAP_headphone_outputs.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/43/Sony_NW-ZX300_DAP_headphone_outputs.jpg/440px-Sony_NW-ZX300_DAP_headphone_outputs.jpg 2x" data-file-width="1600" data-file-height="508" /></a><figcaption>The <a href="/wiki/Walkman_ZX_Series" title="Walkman ZX Series">Sony Walkman NW-ZX300</a> has a balanced 4.4 mm <a href="/wiki/Pentaconn" class="mw-redirect" title="Pentaconn">Pentaconn</a> output alongside a standard 3.5 mm unbalanced output.</figcaption></figure> <div class="mw-heading mw-heading4"><h4 id="Disadvantages">Disadvantages</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=28" title="Edit section: Disadvantages"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>When using non-switching phone connectors to make balanced audio connections, the socket grounds the plug tip and ring when inserting or disconnecting the plug, and the ground mates last. This causes bursts of hum, cracks and pops and may stress some outputs as they will be short circuited briefly, or longer if the plug is left half in. </p><p>This problem does not occur with XLR or when using <i>gauge B</i><sup id="cite_ref-100" class="reference"><a href="#cite_note-100"><span class="cite-bracket">[</span>95<span class="cite-bracket">]</span></a></sup> which although it is of 0.25 in (6.35 mm) diameter has a smaller tip and a recessed ring so that the ground contact of the socket never touches the tip or ring of the plug. This type was designed for balanced audio use, being the original telephone switchboard connector and is still common in broadcast, telecommunications and many professional audio applications where it is vital that permanent circuits being monitored are not interrupted by the insertion or removal of connectors. This same tapered shape used in the <i>gauge B</i> plug can be seen also in aviation and military applications on various diameters of jack connector including the PJ-068 and Bantam plugs. The more common straight-sided profile used in domestic and commercial applications and discussed in most of this article is known as <i>gauge A</i>. </p><p>Alternatively, some switched audio jacks contain built-in isolated switches that only activate when the plug is fully inserted.<sup id="cite_ref-101" class="reference"><a href="#cite_note-101"><span class="cite-bracket">[</span>96<span class="cite-bracket">]</span></a></sup> This can be used to avoid the insertion issue, for instance by wiring the connectors through a <a href="/wiki/Double_pole,_double_throw" class="mw-redirect" title="Double pole, double throw">double pole, double throw</a> switch that activates only upon full insertion. Or for instance by having the switch control a circuit that gracefully ramps up the audio once the plug is fully-inserted and mutes the audio when not fully-inserted. </p> <div class="mw-heading mw-heading3"><h3 id="Unbalanced_audio">Unbalanced audio</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=29" title="Edit section: Unbalanced audio"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Phone connectors with three conductors are also commonly used as unbalanced audio <i>patch points</i> (or <i>insert points</i>, or simply <i><a href="/wiki/Insert_(effects_processing)" title="Insert (effects processing)">inserts</a></i>), with the output on many mixers found on the tip and the input on the ring. This is often expressed as <i>tip send, ring return</i>.<sup id="cite_ref-102" class="reference"><a href="#cite_note-102"><span class="cite-bracket">[</span>c<span class="cite-bracket">]</span></a></sup> Older mixers and some outboard gear<sup id="cite_ref-104" class="reference"><a href="#cite_note-104"><span class="cite-bracket">[</span>d<span class="cite-bracket">]</span></a></sup> have unbalanced insert points with <i>ring send, tip return</i>.<sup id="cite_ref-105" class="reference"><a href="#cite_note-105"><span class="cite-bracket">[</span>e<span class="cite-bracket">]</span></a></sup> </p><p>In many implementations, the switch contact within the panel socket is used to close the circuit between <i>send</i> and <i>return</i> when the patch point has no plug inserted. Combining <i>send</i> and <i>return</i> functions via single <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027"><span class="frac"><span class="num">1</span>⁄<span class="den">4</span></span> in TRS connectors halves the space needed for insert jack fields which would otherwise require two jacks, one for <i>send</i> and one for <i>return</i>.<sup id="cite_ref-106" class="reference"><a href="#cite_note-106"><span class="cite-bracket">[</span>f<span class="cite-bracket">]</span></a></sup> </p><p>In some three-conductor TRS phone inserts, the concept is extended by using specially designed phone jacks that will accept a mono phone plug partly inserted <i>to the first click</i> and will then connect the tip to the signal path without breaking it. Standard TRS connectors may also be used in this way with varying success. </p><p>In some very compact equipment including <a href="/wiki/Modular_synthesizer" title="Modular synthesizer">modular synthesizers</a>, 3.5 mm TS phone connectors are used for patch points. </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=30" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1266661725">.mw-parser-output .portalbox{padding:0;margin:0.5em 0;display:table;box-sizing:border-box;max-width:175px;list-style:none}.mw-parser-output .portalborder{border:1px solid var(--border-color-base,#a2a9b1);padding:0.1em;background:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output .portalbox-entry{display:table-row;font-size:85%;line-height:110%;height:1.9em;font-style:italic;font-weight:bold}.mw-parser-output .portalbox-image{display:table-cell;padding:0.2em;vertical-align:middle;text-align:center}.mw-parser-output .portalbox-link{display:table-cell;padding:0.2em 0.2em 0.2em 0.3em;vertical-align:middle}@media(min-width:720px){.mw-parser-output .portalleft{margin:0.5em 1em 0.5em 0}.mw-parser-output .portalright{clear:right;float:right;margin:0.5em 0 0.5em 1em}}</style><ul role="navigation" aria-label="Portals" class="noprint portalbox portalborder portalright"> <li class="portalbox-entry"><span class="portalbox-image"><span class="noviewer" typeof="mw:File"><a href="/wiki/File:Nuvola_apps_ksim.png" class="mw-file-description"><img alt="icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Nuvola_apps_ksim.png/28px-Nuvola_apps_ksim.png" decoding="async" width="28" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Nuvola_apps_ksim.png/42px-Nuvola_apps_ksim.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8d/Nuvola_apps_ksim.png/56px-Nuvola_apps_ksim.png 2x" data-file-width="128" data-file-height="128" /></a></span></span><span class="portalbox-link"><a href="/wiki/Portal:Electronics" title="Portal:Electronics">Electronics portal</a></span></li></ul> <ul><li><a href="/wiki/Banana_connector" title="Banana connector">Banana connector</a></li> <li><a href="/wiki/Coaxial_power_connector" title="Coaxial power connector">Coaxial power connector</a></li> <li><a href="/wiki/Dual_headphone_adapter" title="Dual headphone adapter">Dual headphone adapter</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Explanatory_notes">Explanatory notes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=31" title="Edit section: Explanatory notes"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist reflist-lower-alpha"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-34"><span class="mw-cite-backlink"><b><a href="#cite_ref-34">^</a></b></span> <span class="reference-text">0.210 inch inside diameter jacks are also found in discontinued <a href="/wiki/Bell_%26_Howell" title="Bell & Howell">Bell & Howell</a> 16 mm projector speakers.<sup id="cite_ref-33" class="reference"><a href="#cite_note-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup></span> </li> <li id="cite_note-54"><span class="mw-cite-backlink"><b><a href="#cite_ref-54">^</a></b></span> <span class="reference-text">Creative's documentation uses the word <i>pole</i> instead of <i>conductor</i> to describe connector contacts.</span> </li> <li id="cite_note-102"><span class="mw-cite-backlink"><b><a href="#cite_ref-102">^</a></b></span> <span class="reference-text">An advantage of the <i>tip send</i> patch point is that if it is used as an output only, a 2-conductor mono phone plug correctly grounds the input.</span> </li> <li id="cite_note-104"><span class="mw-cite-backlink"><b><a href="#cite_ref-104">^</a></b></span> <span class="reference-text">The TRS <i>ring send</i> configuration is still found on some compressor sidechain input jacks such as the dbx 166XL.<sup id="cite_ref-103" class="reference"><a href="#cite_note-103"><span class="cite-bracket">[</span>97<span class="cite-bracket">]</span></a></sup></span> </li> <li id="cite_note-105"><span class="mw-cite-backlink"><b><a href="#cite_ref-105">^</a></b></span> <span class="reference-text">Use of a <i>tip return</i> insert style allows a mono phone plug to bring an unbalanced signal directly into the circuit, though in this case the output must be robust enough to withstand being grounded.</span> </li> <li id="cite_note-106"><span class="mw-cite-backlink"><b><a href="#cite_ref-106">^</a></b></span> <span class="reference-text">The tradeoff is that this scheme does not support balanced signals and unbalanced signals are more prone to buzz, <a href="/wiki/Mains_hum" title="Mains hum">hum</a> and outside interference.</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=32" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.midi.org/specifications/midi-transports-specifications/specification-for-use-of-trs-connectors-with-midi-devices-2">"Specification for Use of "TRS" Connectors with MIDI Devices"</a>. <i>The MIDI Association</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230723090849/https://www.midi.org/specifications/midi-transports-specifications/specification-for-use-of-trs-connectors-with-midi-devices-2">Archived</a> from the original on 2023-07-23<span class="reference-accessdate">. Retrieved <span class="nowrap">2023-12-13</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+MIDI+Association&rft.atitle=Specification+for+Use+of+%22TRS%22+Connectors+with+MIDI+Devices&rft_id=https%3A%2F%2Fwww.midi.org%2Fspecifications%2Fmidi-transports-specifications%2Fspecification-for-use-of-trs-connectors-with-midi-devices-2&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="https://archive.org/details/internationalli04compgoog"><i>International Library of Technology: ... Principles of Telephony ...</i></a> International Textbook Company, Scranton, PA. 1907. p. <a rel="nofollow" class="external text" href="https://archive.org/details/internationalli04compgoog/page/n52">36</a>. <q>tip ring sleeve 0–1922.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=International+Library+of+Technology%3A+...+Principles+of+Telephony+...&rft.pages=36&rft.pub=International+Textbook+Company%2C+Scranton%2C+PA&rft.date=1907&rft_id=https%3A%2F%2Farchive.org%2Fdetails%2Finternationalli04compgoog&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGary_D._Davis_and_Ralph_Jones1989" class="citation book cs1">Gary D. Davis and Ralph Jones (1989). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=d7ft6F8ZUdcC&q=%22phone+plug%22+%22phone+jack%22&pg=PA64"><i>The Sound Reinforcement Handbook</i></a>. Hal Leonard. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-88188-900-8" title="Special:BookSources/0-88188-900-8"><bdi>0-88188-900-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Sound+Reinforcement+Handbook&rft.pub=Hal+Leonard&rft.date=1989&rft.isbn=0-88188-900-8&rft.au=Gary+D.+Davis+and+Ralph+Jones&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3Dd7ft6F8ZUdcC%26q%3D%2522phone%2Bplug%2522%2B%2522phone%2Bjack%2522%26pg%3DPA64&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRobert_McLeish2005" class="citation book cs1">Robert McLeish (2005). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=JzJJ6kg3hLUC&q=%22jack+socket%22+%22jack+plug%22&pg=PA331"><i>Radio Production</i></a>. Newnes. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-240-51972-8" title="Special:BookSources/0-240-51972-8"><bdi>0-240-51972-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Radio+Production&rft.pub=Newnes&rft.date=2005&rft.isbn=0-240-51972-8&rft.au=Robert+McLeish&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DJzJJ6kg3hLUC%26q%3D%2522jack%2Bsocket%2522%2B%2522jack%2Bplug%2522%26pg%3DPA331&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20100313114131/http://catalog.asme.org/Codes/PrintBook/Y1444_Reference_Designations.cfm"><i>Reference Designations for Electrical and Electronics Parts and Equipment: ASME Y14.44-2008 (Replaced IEEE 200-1975): Section 2.1.5.3</i></a>. ASME, Fairfield, NJ. 2008. Archived from <a rel="nofollow" class="external text" href="http://catalog.asme.org/Codes/PrintBook/Y1444_Reference_Designations.cfm">the original</a> on 2010-03-13.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Reference+Designations+for+Electrical+and+Electronics+Parts+and+Equipment%3A+ASME+Y14.44-2008+%28Replaced+IEEE+200-1975%29%3A+Section+2.1.5.3&rft.pub=ASME%2C+Fairfield%2C+NJ&rft.date=2008&rft_id=http%3A%2F%2Fcatalog.asme.org%2FCodes%2FPrintBook%2FY1444_Reference_Designations.cfm&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation book cs1"><a rel="nofollow" class="external text" href="https://www.google.com/search?hl=en&q=ieee-200-1975"><i>Standard Reference Designations for Electrical and Electronics Parts and Equipments: IEEE 200-1975 (Reaffirmed 1988): Section 4.1.5.3</i></a>. IEEE and ANSI, New York, NY. 1975.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Standard+Reference+Designations+for+Electrical+and+Electronics+Parts+and+Equipments%3A+IEEE+200-1975+%28Reaffirmed+1988%29%3A+Section+4.1.5.3&rft.pub=IEEE+and+ANSI%2C+New+York%2C+NY&rft.date=1975&rft_id=https%3A%2F%2Fwww.google.com%2Fsearch%3Fhl%3Den%26q%3Dieee-200-1975&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-not_mini_phono-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-not_mini_phono_7-0">^</a></b></span> <span class="reference-text"> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.digikey.com/product-search/en/connectors-interconnects/barrel-audio-connectors/1443095">"Barrel – Audio Connectors"</a>. <i>Digi-Key catalog</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Digi-Key+catalog&rft.atitle=Barrel+%E2%80%93+Audio+Connectors&rft_id=http%3A%2F%2Fwww.digikey.com%2Fproduct-search%2Fen%2Fconnectors-interconnects%2Fbarrel-audio-connectors%2F1443095&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.mouser.com/Connectors/Audio-Video-Connectors/_/N-778ct/">"Audio-Video Connectors"</a>. <i>Mouser Electronics catalog</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Mouser+Electronics+catalog&rft.atitle=Audio-Video+Connectors&rft_id=http%3A%2F%2Fwww.mouser.com%2FConnectors%2FAudio-Video-Connectors%2F_%2FN-778ct%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.switchcraft.com/Category_Wide.aspx?Parent=3">"Jacks & Plugs"</a>. <i>Switchcraft catalog</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Switchcraft+catalog&rft.atitle=Jacks+%26+Plugs&rft_id=http%3A%2F%2Fwww.switchcraft.com%2FCategory_Wide.aspx%3FParent%3D3&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation encyclopaedia cs1"><a rel="nofollow" class="external text" href="https://www.pcmag.com/encyclopedia/term/47059/mini-phone-connector">"Definition of: mini-phone connector"</a>. <i>PC Magazine Encyclopedia</i>. <q>Also called a 3.5 mm or 1/8" connector, it is a plug and socket widely used for analog audio signals in portable devices.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Definition+of%3A+mini-phone+connector&rft.btitle=PC+Magazine+Encyclopedia&rft_id=https%3A%2F%2Fwww.pcmag.com%2Fencyclopedia%2Fterm%2F47059%2Fmini-phone-connector&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.ramelectronics.net/25mm-35mm-Adapters.aspx">"Mini Phone Plug Adapters"</a>. <i>RAM Electronics online catalog</i>. <q>(e.g.) 3.5mm female stereo mini phone jack to 1/4" male Stereo phone plug Adapter</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=RAM+Electronics+online+catalog&rft.atitle=Mini+Phone+Plug+Adapters&rft_id=https%3A%2F%2Fwww.ramelectronics.net%2F25mm-35mm-Adapters.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></li></ul> </span></li> <li id="cite_note-mini-phono-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-mini-phono_8-0">^</a></b></span> <span class="reference-text"> <ul><li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLewallen1993" class="citation book cs1">Lewallen, Dale (1993). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=6E53r6viGzIC&q=%22mini+phono%22"><i>This Old PC</i></a>. <a href="/wiki/Ziff-Davis_Press" class="mw-redirect" title="Ziff-Davis Press">Ziff-Davis Press</a>. p. 362. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-56276-108-0" title="Special:BookSources/978-1-56276-108-0"><bdi>978-1-56276-108-0</bdi></a><span class="reference-accessdate">. Retrieved <span class="nowrap">September 8,</span> 2016</span>. <q>Remember that sound cards use the smaller 1/8-inch mini-phono plug...</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=This+Old+PC&rft.pages=362&rft.pub=Ziff-Davis+Press&rft.date=1993&rft.isbn=978-1-56276-108-0&rft.aulast=Lewallen&rft.aufirst=Dale&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D6E53r6viGzIC%26q%3D%2522mini%2Bphono%2522&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://support.apple.com/en-us/HT201739">"Connect your Mac to a home stereo, iPod, iPad, musical instruments, or speakers"</a>. <i><a href="/wiki/Apple.com" class="mw-redirect" title="Apple.com">Apple.com</a></i>. <a href="/wiki/Apple_Inc." title="Apple Inc.">Apple Inc.</a><span class="reference-accessdate"> Retrieved <span class="nowrap">September 8,</span> 2016</span>. <q>1/8-inch stereo mini-phono plug adapter.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Apple.com&rft.atitle=Connect+your+Mac+to+a+home+stereo%2C+iPod%2C+iPad%2C+musical+instruments%2C+or+speakers&rft_id=https%3A%2F%2Fsupport.apple.com%2Fen-us%2FHT201739&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://support.monoprice.com/ics/support/glossary.asp">"Glossary"</a>. <a href="/wiki/Monoprice" title="Monoprice">Monoprice</a><span class="reference-accessdate">. Retrieved <span class="nowrap">September 8,</span> 2016</span>. <q>3.5 mm Plug/Jack: Also referred to as a 1/8 inch, auxiliary input, mini stereo, and mini phono.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Glossary&rft.pub=Monoprice&rft_id=http%3A%2F%2Fsupport.monoprice.com%2Fics%2Fsupport%2Fglossary.asp&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20160916080805/https://www.beckmancoulter.com/wsrportal/techdocs%3Fdocname%3DA59442-AA.pdf">"Beckman Coulter Automatic Temperature Compensation (ATC) Probe"</a> <span class="cs1-format">(PDF)</span>. <a href="/wiki/Beckman_Coulter" title="Beckman Coulter">Beckman Coulter</a>. 2008. p. 1. Archived from <a rel="nofollow" class="external text" href="https://www.beckmancoulter.com/wsrportal/techdocs%3Fdocname%3DA59442-AA.pdf">the original</a> <span class="cs1-format">(PDF)</span> on September 16, 2016<span class="reference-accessdate">. Retrieved <span class="nowrap">September 8,</span> 2016</span>. <q>The 3.5mm mini-phono plug connector of the ATC Probe plugs into the 3.5mm mini-phono jack on the pH meter.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Beckman+Coulter+Automatic+Temperature+Compensation+%28ATC%29+Probe&rft.pages=1&rft.pub=Beckman+Coulter&rft.date=2008&rft_id=https%3A%2F%2Fwww.beckmancoulter.com%2Fwsrportal%2Ftechdocs%253Fdocname%253DA59442-AA.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFDivine2016" class="citation web cs1">Divine, John (September 7, 2016). <a rel="nofollow" class="external text" href="http://money.usnews.com/investing/articles/2016-09-07/apple-inc-iphone-7-and-its-10-new-features-wont-move-aapl-stock?int=investing-rec">"Apple's iPhone 7 and its 10 Flashy Features Won't Move AAPL Stock"</a>. <i><a href="/wiki/USNews.com" class="mw-redirect" title="USNews.com">USNews.com</a></i>. <a href="/wiki/U.S._News_%26_World_Report" title="U.S. News & World Report">U.S. News & World Report</a><span class="reference-accessdate">. Retrieved <span class="nowrap">September 8,</span> 2016</span>. <q>...instead of the headphone jack.... There will be a lightning-to-mini phono adapter included as well.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=USNews.com&rft.atitle=Apple%27s+iPhone+7+and+its+10+Flashy+Features+Won%27t+Move+AAPL+Stock&rft.date=2016-09-07&rft.aulast=Divine&rft.aufirst=John&rft_id=http%3A%2F%2Fmoney.usnews.com%2Finvesting%2Farticles%2F2016-09-07%2Fapple-inc-iphone-7-and-its-10-new-features-wont-move-aapl-stock%3Fint%3Dinvesting-rec&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></li></ul> </span></li> <li id="cite_note-:0-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-:0_9-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.newvision-sherwinpioneers.org/the-birthplace-of-the-telephone/">"The Birthplace of the Telephone | Thomas Sherwin Chapter #14"</a>. <i>www.newvision-sherwinpioneers.org</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.newvision-sherwinpioneers.org&rft.atitle=The+Birthplace+of+the+Telephone+%26%23124%3B+Thomas+Sherwin+Chapter+%2314&rft_id=http%3A%2F%2Fwww.newvision-sherwinpioneers.org%2Fthe-birthplace-of-the-telephone%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.theatlantic.com/technology/archive/2014/09/when-your-friendly-phone-operator-was-a-teenage-boy/380468/">"When Phone Operators Were Unruly Teenage Boys"</a>. <i><a href="/wiki/The_Atlantic" title="The Atlantic">The Atlantic</a></i>. 19 September 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">2017-10-25</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+Atlantic&rft.atitle=When+Phone+Operators+Were+Unruly+Teenage+Boys&rft.date=2014-09-19&rft_id=https%3A%2F%2Fwww.theatlantic.com%2Ftechnology%2Farchive%2F2014%2F09%2Fwhen-your-friendly-phone-operator-was-a-teenage-boy%2F380468%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://etler.com/docs/WECo/Fundamentals/files/3-LocalManual.pdf">"Chapter 3 Local Manual Systems"</a> <span class="cs1-format">(PDF)</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Chapter+3+Local+Manual+Systems&rft_id=http%3A%2F%2Fetler.com%2Fdocs%2FWECo%2FFundamentals%2Ffiles%2F3-LocalManual.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://connecticuthistory.org/the-first-commercial-telephone-exchange-today-in-history/">"First Commercial Telephone Exchange – Today in History: January 28"</a>. 28 January 2020.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=First+Commercial+Telephone+Exchange+%E2%80%93+Today+in+History%3A+January+28&rft.date=2020-01-28&rft_id=https%3A%2F%2Fconnecticuthistory.org%2Fthe-first-commercial-telephone-exchange-today-in-history%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.scaruffi.com/politics/telephon.html">"A History of the Telephone"</a>. <i>www.scaruffi.com</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.scaruffi.com&rft.atitle=A+History+of+the+Telephone&rft_id=https%3A%2F%2Fwww.scaruffi.com%2Fpolitics%2Ftelephon.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1041539562">.mw-parser-output .citation{word-wrap:break-word}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}</style><span class="citation patent" id="CITEREFScribner1884"><a rel="nofollow" class="external text" href="https://patentimages.storage.googleapis.com/a6/07/a9/c8bf785c7d1260/US293198.pdf">US 293198</a>, Scribner, Charles E., "Telephone-Switch", issued 1884-02-05</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.number=293198&rft.cc=US&rft.title=Telephone-Switch&rft.inventor=Scribner&rft.date=1884-02-05&rft.appldate=1879-08-23"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFChapuis2003" class="citation book cs1">Chapuis, Robert J. (2003). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=EaVSbjsaBfMC&q=western+electric+standard+switchboard+1880&pg=PA54"><i>100 Years of Telephone Switching</i></a>. Amsterdam, the Netherlands: IOS Press. p. 51. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/9784274906114" title="Special:BookSources/9784274906114"><bdi>9784274906114</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=100+Years+of+Telephone+Switching&rft.place=Amsterdam%2C+the+Netherlands&rft.pages=51&rft.pub=IOS+Press&rft.date=2003&rft.isbn=9784274906114&rft.aulast=Chapuis&rft.aufirst=Robert+J.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DEaVSbjsaBfMC%26q%3Dwestern%2Belectric%2Bstandard%2Bswitchboard%2B1880%26pg%3DPA54&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1041539562"><span class="citation patent" id="CITEREFScribner1893"><a rel="nofollow" class="external text" href="https://patents.google.com/patent/US489570A/en">US 489570</a>, Scribner, Charles E., "SPRING-JACK SWITCH", issued 1893-01-10</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.number=489570&rft.cc=US&rft.title=SPRING-JACK+SWITCH&rft.inventor=Scribner&rft.date=1893-01-10&rft.appldate=1880-12-27"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1041539562"><span class="citation patent" id="CITEREFScribner1882"><a rel="nofollow" class="external text" href="https://patents.google.com/patent/US262701A/en">US 262701</a>, Scribner, Charles E., "CIRCUITS FOR MULTIPLE SWITCH-BOARDS OF TELEPHONE-EXCHANGES", issued 1882-08-15</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.number=262701&rft.cc=US&rft.title=CIRCUITS+FOR+MULTIPLE+SWITCH-BOARDS+OF+TELEPHONE-EXCHANGES&rft.inventor=Scribner&rft.date=1882-08-15&rft.appldate=1882-02-01"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1041539562"><span class="citation patent" id="CITEREFScribner1884"><a rel="nofollow" class="external text" href="https://patents.google.com/patent/US305021A/en">US 305021</a>, Scribner, Charles E., "MULTIPLE SWITCH-BOARD FOR TELEPHONE-EXCHANGES", issued 1884-09-09</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.number=305021&rft.cc=US&rft.title=MULTIPLE+SWITCH-BOARD+FOR+TELEPHONE-EXCHANGES&rft.inventor=Scribner&rft.date=1884-09-09&rft.appldate=1882-03-20"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-19">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1041539562"><span class="citation patent" id="CITEREFClausen1902"><a rel="nofollow" class="external text" href="https://patents.google.com/patent/US711556/en">US 711556</a>, Clausen, Henry P., "TELEPHONE SWITCHBOARD-PLUG", issued 1902-10-21</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Apatent&rft.number=711556&rft.cc=US&rft.title=TELEPHONE+SWITCHBOARD-PLUG&rft.inventor=Clausen&rft.date=1902-10-21&rft.appldate=1901-04-13"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-20"><span class="mw-cite-backlink"><b><a href="#cite_ref-20">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.telephonecollectors.info/index.php/browse/document-repository/catalogs-manuals/western-electric/we-catalogs/11201-1907ca-weco-telephonic-apparatus-and-supplies-catalog-ocr-r-large-file/file">"Western Electric Telephonic Apparatus and Supplies (1907)"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Western+Electric+Telephonic+Apparatus+and+Supplies+%281907%29&rft_id=http%3A%2F%2Fwww.telephonecollectors.info%2Findex.php%2Fbrowse%2Fdocument-repository%2Fcatalogs-manuals%2Fwestern-electric%2Fwe-catalogs%2F11201-1907ca-weco-telephonic-apparatus-and-supplies-catalog-ocr-r-large-file%2Ffile&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-21">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://carlsonmfg.com/resources/military-specifications-1/1528-mil-dtl-642-5b-pdf-1/file">"MIL-DTL-642/5B"</a>. 3 March 2021.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=MIL-DTL-642%2F5B&rft.date=2021-03-03&rft_id=http%3A%2F%2Fcarlsonmfg.com%2Fresources%2Fmilitary-specifications-1%2F1528-mil-dtl-642-5b-pdf-1%2Ffile&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-22"><span class="mw-cite-backlink"><b><a href="#cite_ref-22">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://landandmaritimeapps.dla.mil/Downloads/MilSpec/Docs/MIL-DTL-642/dtl642.pdf">"MIL-DTL-642F: Plugs, Telephone, and Accessory Screws"</a> <span class="cs1-format">(PDF)</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=MIL-DTL-642F%3A+Plugs%2C+Telephone%2C+and+Accessory+Screws&rft_id=https%3A%2F%2Flandandmaritimeapps.dla.mil%2FDownloads%2FMilSpec%2FDocs%2FMIL-DTL-642%2Fdtl642.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-23">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="http://www.cbc.ca/news/technology/apple-iphone-headphone-jack-history-1.3755120">"All-right jack: Simple but effective plug-in has endured for more than a century"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">2016-09-11</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=All-right+jack%3A+Simple+but+effective+plug-in+has+endured+for+more+than+a+century&rft_id=http%3A%2F%2Fwww.cbc.ca%2Fnews%2Ftechnology%2Fapple-iphone-headphone-jack-history-1.3755120&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-24"><span class="mw-cite-backlink"><b><a href="#cite_ref-24">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.sony.net/Fun/design/history/1960.html">"Sony history 1960s"</a>. <i>Sony official website</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Sony+official+website&rft.atitle=Sony+history+1960s&rft_id=http%3A%2F%2Fwww.sony.net%2FFun%2Fdesign%2Fhistory%2F1960.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-25">^</a></b></span> <span class="reference-text">Description of 3.5 mm earphone jack in described model: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.worthpoint.com/worthopedia/vintage-sony-1960-efm-117j-radio-47603127">"Vintage Sony 1960'S EFM-117J Radio"</a>. <i><a href="/w/index.php?title=WorthPoint&action=edit&redlink=1" class="new" title="WorthPoint (page does not exist)">WorthPoint</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">2016-01-25</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=WorthPoint&rft.atitle=Vintage+Sony+1960%27S+EFM-117J+Radio&rft_id=http%3A%2F%2Fwww.worthpoint.com%2Fworthopedia%2Fvintage-sony-1960-efm-117j-radio-47603127&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-26"><span class="mw-cite-backlink"><b><a href="#cite_ref-26">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation cs2"><a rel="nofollow" class="external text" href="https://www.cuidevices.com/product/interconnect/connectors/audio-connectors/audio-plugs/sp-3530"><i>3.5 mm Stereo Plug</i></a>, CUI Devices<span class="reference-accessdate">, retrieved <span class="nowrap">2021-09-01</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=3.5+mm+Stereo+Plug&rft.pub=CUI+Devices&rft_id=https%3A%2F%2Fwww.cuidevices.com%2Fproduct%2Finterconnect%2Fconnectors%2Faudio-connectors%2Faudio-plugs%2Fsp-3530&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-27"><span class="mw-cite-backlink"><b><a href="#cite_ref-27">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://source.android.com/devices/accessories/headset/plug-headset-spec">"3.5 mm Headset: Accessory Specification"</a>. <i>Android Open Source Project</i><span class="reference-accessdate">. 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(2007) <a rel="nofollow" class="external text" href="https://books.google.com/books?id=r86J_aNNReEC&pg=PA202"><i>The Ultimate Live Sound Operator's Handbook</i>, p. 202.</a> Hal Leonard Corporation. <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/1-4234-1971-5" title="Special:BookSources/1-4234-1971-5">1-4234-1971-5</a></span> </li> <li id="cite_note-33"><span class="mw-cite-backlink"><b><a href="#cite_ref-33">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20140413124010/http://smartdata.usbid.com/datasheets/dsid/145849.pdf">"Switchcraft <i>Telephone Jack and Telephone Plug Mating Chart</i>"</a> <span class="cs1-format">(PDF)</span>. Archived from <a rel="nofollow" class="external text" href="http://smartdata.usbid.com/datasheets/dsid/145849.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 2014-04-13<span class="reference-accessdate">. Retrieved <span class="nowrap">2013-06-24</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Switchcraft+Telephone+Jack+and+Telephone+Plug+Mating+Chart&rft_id=http%3A%2F%2Fsmartdata.usbid.com%2Fdatasheets%2Fdsid%2F145849.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-RockStock-35"><span class="mw-cite-backlink">^ <a href="#cite_ref-RockStock_35-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-RockStock_35-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://rockstockpedals.com/blogs/blog/wired-for-sound-a-musicians-guide-to-ts-and-trs-cables">"Wired for Sound: A Musician's Guide to TS and TRS Cables"</a>. <i>RockStock</i>. 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Retrieved <span class="nowrap">11 December</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=RockStock&rft.atitle=Wired+for+Sound%3A+A+Musician%27s+Guide+to+TS+and+TRS+Cables&rft_id=https%3A%2F%2Frockstockpedals.com%2Fblogs%2Fblog%2Fwired-for-sound-a-musicians-guide-to-ts-and-trs-cables&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-Sound_Unlocked-36"><span class="mw-cite-backlink">^ <a href="#cite_ref-Sound_Unlocked_36-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Sound_Unlocked_36-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCollins" class="citation web cs1">Collins, Keith. <a rel="nofollow" class="external text" href="https://soundunlocked.com/what-is-a-trs-cable">"What Is A TRS Cable? TRS vs TS Cables"</a>. <i>Sound Unlocked</i>. Sound Unlocked. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20241211000511/https://soundunlocked.com/what-is-a-trs-cable">Archived</a> from the original on 2024-12-11<span class="reference-accessdate">. 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Retrieved <span class="nowrap">11 December</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GEARit&rft.atitle=TS+vs+TRS+Cables%3A+What%E2%80%99s+the+Difference%3F&rft_id=https%3A%2F%2Fwww.gearit.com%2Fblogs%2Fnews%2Fts-vs-trs-cables&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-38"><span class="mw-cite-backlink"><b><a href="#cite_ref-38">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://appleinsider.com/articles/22/08/17/seven-years-later-apple-was-right-to-kill-off-the-35mm-headphone-jack">"Seven years later, Apple was right to kill off the 3.5mm headphone jack"</a><span class="reference-accessdate">. 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Retrieved <span class="nowrap">2023-12-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=CUI+Devices&rft.atitle=Waterproof+Audio+Jacks+%E2%80%93+IP67+Rated+Stereo+Connectors&rft_id=https%3A%2F%2Fwww.cuidevices.com%2Fwaterproof-audio-jacks&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-Teodoro-40"><span class="mw-cite-backlink"><b><a href="#cite_ref-Teodoro_40-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFTeodoro2023" class="citation web cs1">Teodoro, Jeffrey (17 September 2023). <a rel="nofollow" class="external text" href="https://www.techtimes.com/articles/296476/20230917/reasons-why-smartphone-industry-trying-to-kill-3-5-mm-headphone-jack.htm">"5 Reasons Why the Smartphone Industry Is Trying to Kill the 3.5 Mm Headphone Jack"</a>. <i>Tech Times</i>. 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Retrieved <span class="nowrap">10 December</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Tech+Times&rft.atitle=5+Reasons+Why+the+Smartphone+Industry+Is+Trying+to+Kill+the+3.5+Mm+Headphone+Jack&rft.date=2023-09-17&rft.aulast=Teodoro&rft.aufirst=Jeffrey&rft_id=https%3A%2F%2Fwww.techtimes.com%2Farticles%2F296476%2F20230917%2Freasons-why-smartphone-industry-trying-to-kill-3-5-mm-headphone-jack.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-41"><span class="mw-cite-backlink"><b><a href="#cite_ref-41">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://qz.com/776383/iphone-7-three-chinese-smartphone-makers-ditched-the-headphone-jack-before-apple">"Apple is late, not early, to ditching the headphone jack"</a>. <i>Quartz</i>. 2016-09-08. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20240101004820/https://qz.com/776383/iphone-7-three-chinese-smartphone-makers-ditched-the-headphone-jack-before-apple">Archived</a> from the original on 2024-01-01<span class="reference-accessdate">. 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Retrieved <span class="nowrap">2023-12-15</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Apple+Insider&rft.atitle=Seven+years+later%2C+Apple+was+right+to+kill+off+the+3.5mm+headphone+jack&rft.date=2022-08-17&rft_id=https%3A%2F%2Fappleinsider.com%2Farticles%2F22%2F08%2F17%2Fseven-years-later-apple-was-right-to-kill-off-the-35mm-headphone-jack&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-43"><span class="mw-cite-backlink"><b><a href="#cite_ref-43">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.cnet.com/tech/computing/asus-zenbook-13-2020-review-this-small-laptop-makes-a-big-impression/">"Asus ZenBook 13 (2020) review: This small laptop makes a big impression"</a>. <i>CNET</i><span class="reference-accessdate">. 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Retrieved <span class="nowrap">5 March</span> 2023</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.scottbouch.com&rft.atitle=British+Aircrew+671-Type+Plug+%2F+NATO+Plug&rft_id=https%3A%2F%2Fwww.scottbouch.com%2Faircrew-uk-connector-plug-671-type-nato.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-52"><span class="mw-cite-backlink"><b><a href="#cite_ref-52">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.fullcompass.com/product/292346.html">"Switchcraft Z15J 1/4" High Power Speaker Jack"</a>. Full Compass<span class="reference-accessdate">. Retrieved <span class="nowrap">October 24,</span> 2011</span>. <q>High power 2-conductor speaker jack carries 15A (continuous) audio speaker current levels.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Switchcraft+Z15J+1%2F4%22+High+Power+Speaker+Jack&rft.pub=Full+Compass&rft_id=http%3A%2F%2Fwww.fullcompass.com%2Fproduct%2F292346.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-53"><span class="mw-cite-backlink"><b><a href="#cite_ref-53">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.hobby-hour.com/electronics/computer_microphone.php">"Computer microphones"</a><span class="reference-accessdate">. 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Retrieved <span class="nowrap">2020-04-24</span></span>. <q>In order to fit the Chinese national conditions, Apple China released Earpods with some changes, specifically for the Chinese market, to make it in line with the Chinese domestic OMTP standard. ... 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Retrieved <span class="nowrap">2020-05-29</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.qsl.net&rft.atitle=MH-37A4B+wiring+diagram&rft_id=https%3A%2F%2Fwww.qsl.net%2Fg4wpw%2Fmh37a4b.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-77"><span class="mw-cite-backlink"><b><a href="#cite_ref-77">^</a></b></span> <span class="reference-text">Sony and Panasonic camcorder service manuals</span> </li> <li id="cite_note-78"><span class="mw-cite-backlink"><b><a href="#cite_ref-78">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://blog.grandstream.com/faq/product-related-questions/gxv350x-ip-video-encoder">"Grandstream Blog"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">2023-03-05</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Grandstream+Blog&rft_id=https%3A%2F%2Fblog.grandstream.com%2Ffaq%2Fproduct-related-questions%2Fgxv350x-ip-video-encoder&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-79"><span class="mw-cite-backlink"><b><a href="#cite_ref-79">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.jeita.or.jp/japanese/standard/book/RC-5325A/">"RC-5325A"</a>. <i>www.jeita.or.jp</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.jeita.or.jp&rft.atitle=RC-5325A&rft_id=https%3A%2F%2Fwww.jeita.or.jp%2Fjapanese%2Fstandard%2Fbook%2FRC-5325A%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-80"><span class="mw-cite-backlink"><b><a href="#cite_ref-80">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://pinoutguide.com/PortableDevices/ipod_shuffle_pinout.shtml">"Apple iPod Shuffle (2G) USB interface pinout diagram @ pinoutguide.com"</a>. <i>pinoutguide.com</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20240205025641/https://pinoutguide.com/PortableDevices/ipod_shuffle_pinout.shtml">Archived</a> from the original on 2024-02-05<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-02-05</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=pinoutguide.com&rft.atitle=Apple+iPod+Shuffle+%282G%29+USB+interface+pinout+diagram+%40+pinoutguide.com&rft_id=https%3A%2F%2Fpinoutguide.com%2FPortableDevices%2Fipod_shuffle_pinout.shtml&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-81"><span class="mw-cite-backlink"><b><a href="#cite_ref-81">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.usb.org/document-library/usb-type-cr-cable-and-connector-specification-release-21">"USB Type-C Cable and Connector Specification Release 2.1"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=USB+Type-C+Cable+and+Connector+Specification+Release+2.1&rft_id=https%3A%2F%2Fwww.usb.org%2Fdocument-library%2Fusb-type-cr-cable-and-connector-specification-release-21&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span> See Audio Adapter Accessory Mode (Appendix A)</span> </li> <li id="cite_note-82"><span class="mw-cite-backlink"><b><a href="#cite_ref-82">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.nokia.com/gb-en/support/faq/?action=singleTopic&topic=FA136274">FAQ – What type of wired headsets can I use with my Nokia Lumia phone?</a> – "Nokia Lumia 820 and 920 support both American Headset Jack (AHJ) headsets and standard Nokia OMTP headsets."</span> </li> <li id="cite_note-83"><span class="mw-cite-backlink"><b><a href="#cite_ref-83">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://allaboutwindowsphone.com/flow/item/17561_Jays_AB_headset_for_Windows_Ph.php">Jays AB headset for Windows Phone and a note on headset standards</a> – "Nokia's Windows Phone 8 devices (Nokia Lumia 520, 521, 620, 720, 810, 820, 822, 920, 925, and 928) use a new universal connector, enabling the use of both AHJ and OMTP headsets."</span> </li> <li id="cite_note-84"><span class="mw-cite-backlink"><b><a href="#cite_ref-84">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.ti.com/product/TS3A227E/description">"TS3A227E Autonomous Audio Accessory Detection and Configuration Switch"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=TS3A227E+Autonomous+Audio+Accessory+Detection+and+Configuration+Switch&rft_id=http%3A%2F%2Fwww.ti.com%2Fproduct%2FTS3A227E%2Fdescription&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-85"><span class="mw-cite-backlink"><b><a href="#cite_ref-85">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.digital-silence.com/support.html">Digital Silence (earphone manufacturer)</a>: explanation of TRRS connectors and availability of adapter.</span> </li> <li id="cite_note-86"><span class="mw-cite-backlink"><b><a href="#cite_ref-86">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.itu.int/itu-t/workprog/wp_item.aspx?isn=9990">"ITU-T Work Programme"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">26 March</span> 2017</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=ITU-T+Work+Programme&rft_id=http%3A%2F%2Fwww.itu.int%2Fitu-t%2Fworkprog%2Fwp_item.aspx%3Fisn%3D9990&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-87"><span class="mw-cite-backlink"><b><a href="#cite_ref-87">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSauerborn2019" class="citation magazine cs1 cs1-prop-foreign-lang-source">Sauerborn, Denis (2019-04-12). <a rel="nofollow" class="external text" href="https://www.mobilefidelity-magazin.de/pentaconn-das-steckt-hinter-der-44-millimeter-kopfhoererverbindung">"Pentaconn – Das steckt hinter der 4,4 Millimeter-Kopfhörerverbindung"</a> [Pentaconn – About the 4.4 millimeter headphone connector]. <i>mobile fidelity magazine</i> (in German). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20220525041253/https://www.mobilefidelity-magazin.de/pentaconn-das-steckt-hinter-der-44-millimeter-kopfhoererverbindung">Archived</a> from the original on 2022-05-25<span class="reference-accessdate">. Retrieved <span class="nowrap">2022-11-28</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=mobile+fidelity+magazine&rft.atitle=Pentaconn+%E2%80%93+Das+steckt+hinter+der+4%2C4+Millimeter-Kopfh%C3%B6rerverbindung&rft.date=2019-04-12&rft.aulast=Sauerborn&rft.aufirst=Denis&rft_id=https%3A%2F%2Fwww.mobilefidelity-magazin.de%2Fpentaconn-das-steckt-hinter-der-44-millimeter-kopfhoererverbindung&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-88"><span class="mw-cite-backlink"><b><a href="#cite_ref-88">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://pentaconnglobal.com/index.asp?p=/static/about.html">"About Us"</a>. <i>Pentaconn Global</i>. Subang Jaya, Selangor, Malaysia: Nippon DICS SDN BHD. 2016. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20221111164222/https://pentaconnglobal.com/index.asp?p=/static/about.html">Archived</a> from the original on 2022-11-11<span class="reference-accessdate">. Retrieved <span class="nowrap">2022-11-28</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Pentaconn+Global&rft.atitle=About+Us&rft.date=2016&rft_id=https%3A%2F%2Fpentaconnglobal.com%2Findex.asp%3Fp%3D%2Fstatic%2Fabout.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-89"><span class="mw-cite-backlink"><b><a href="#cite_ref-89">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20110717182435/http://www.switchcraft.com/Documents/Jack_Schematics.pdf">"Jack Schematics"</a> <span class="cs1-format">(PDF)</span>. <i>switchcraft.com</i>. Archived from <a rel="nofollow" class="external text" href="http://www.switchcraft.com/Documents/Jack_Schematics.pdf">the original</a> <span class="cs1-format">(PDF)</span> on 2011-07-17.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=switchcraft.com&rft.atitle=Jack+Schematics&rft_id=http%3A%2F%2Fwww.switchcraft.com%2FDocuments%2FJack_Schematics.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-soundonsound-2005-06-90"><span class="mw-cite-backlink">^ <a href="#cite_ref-soundonsound-2005-06_90-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-soundonsound-2005-06_90-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.soundonsound.com/sound-advice/q-whats-wrong-my-patchbay">"Q. What's wrong with my patchbay? -"</a>. <i>www.soundonsound.com</i>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=www.soundonsound.com&rft.atitle=Q.+What%27s+wrong+with+my+patchbay%3F+-&rft_id=https%3A%2F%2Fwww.soundonsound.com%2Fsound-advice%2Fq-whats-wrong-my-patchbay&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-91"><span class="mw-cite-backlink"><b><a href="#cite_ref-91">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.audio-technica.com/custom-uk/faq/">"Frequently Asked Questions"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">2012-05-28</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Frequently+Asked+Questions&rft_id=http%3A%2F%2Fwww.audio-technica.com%2Fcustom-uk%2Ffaq%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-92"><span class="mw-cite-backlink"><b><a href="#cite_ref-92">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSweetwater2000" class="citation web cs1">Sweetwater (2000-01-13). <a rel="nofollow" class="external text" href="http://www.sweetwater.com/insync/techtip.php?find=01/13/2000">"Sweetwater inSync"</a>. Sweetwater.com<span class="reference-accessdate">. Retrieved <span class="nowrap">2013-07-14</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Sweetwater+inSync&rft.pub=Sweetwater.com&rft.date=2000-01-13&rft.au=Sweetwater&rft_id=http%3A%2F%2Fwww.sweetwater.com%2Finsync%2Ftechtip.php%3Ffind%3D01%2F13%2F2000&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-93"><span class="mw-cite-backlink"><b><a href="#cite_ref-93">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.silentway.com/recording-tricks-mackie-cr-1604-mixer">"Silent Way's recording tricks- Mackie CR-1604 mixer"</a>. Silentway.com<span class="reference-accessdate">. Retrieved <span class="nowrap">2013-07-14</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Silent+Way%27s+recording+tricks-+Mackie+CR-1604+mixer&rft.pub=Silentway.com&rft_id=http%3A%2F%2Fwww.silentway.com%2Frecording-tricks-mackie-cr-1604-mixer&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-95"><span class="mw-cite-backlink"><b><a href="#cite_ref-95">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.qscaudio.com/support/technical_support/faq.htm#pafaq6">"Frequently Asked Questions"</a>. <a href="/wiki/QSC_Audio_Products" title="QSC Audio Products">QSC Audio Products</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Frequently+Asked+Questions&rft.pub=QSC+Audio+Products&rft_id=http%3A%2F%2Fwww.qscaudio.com%2Fsupport%2Ftechnical_support%2Ffaq.htm%23pafaq6&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-97"><span class="mw-cite-backlink"><b><a href="#cite_ref-97">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.jesusreigns.co.uk/PDFs/diagrams.PDF">"Diagrams"</a> <span class="cs1-format">(PDF)</span><span class="reference-accessdate">. Retrieved <span class="nowrap">2012-05-28</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Diagrams&rft_id=http%3A%2F%2Fwww.jesusreigns.co.uk%2FPDFs%2Fdiagrams.PDF&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-98"><span class="mw-cite-backlink"><b><a href="#cite_ref-98">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external autonumber" href="http://www.whirlwindusa.com/ftp/Blackbox/manuals/lbs.pdf">[1]</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20061110052136/http://www.whirlwindusa.com/ftp/Blackbox/manuals/lbs.pdf">Archived</a> November 10, 2006, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></span> </li> <li id="cite_note-100"><span class="mw-cite-backlink"><b><a href="#cite_ref-100">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.neutrik.com/en/audio/plugs-and-jacks/mil-b-gauge-type/">"<i>Neutrik mil-b-gauge-type plugs</i>"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Neutrik+mil-b-gauge-type+plugs&rft_id=http%3A%2F%2Fwww.neutrik.com%2Fen%2Faudio%2Fplugs-and-jacks%2Fmil-b-gauge-type%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-101"><span class="mw-cite-backlink"><b><a href="#cite_ref-101">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSmoot" class="citation web cs1">Smoot, Ryan. <a rel="nofollow" class="external text" href="https://www.cuidevices.com/blog/understanding-audio-jack-switches-and-schematics">"Understanding Audio Jack Switches and Schematics"</a>. <i>CUI Devices</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230401085032/https://www.cuidevices.com/blog/understanding-audio-jack-switches-and-schematics">Archived</a> from the original on 2023-04-01<span class="reference-accessdate">. Retrieved <span class="nowrap">2023-06-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=CUI+Devices&rft.atitle=Understanding+Audio+Jack+Switches+and+Schematics&rft.aulast=Smoot&rft.aufirst=Ryan&rft_id=https%3A%2F%2Fwww.cuidevices.com%2Fblog%2Funderstanding-audio-jack-switches-and-schematics&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> <li id="cite_note-103"><span class="mw-cite-backlink"><b><a href="#cite_ref-103">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.dbxpro.com/166XL/166XL.php">"dbx 166XL compressor with balanced TRS <i>tip send</i> input and output jacks and one TRS <i>ring send</i> sidechain jack"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=dbx+166XL+compressor+with+balanced+TRS+tip+send+input+and+output+jacks+and+one+TRS+ring+send+sidechain+jack&rft_id=http%3A%2F%2Fwww.dbxpro.com%2F166XL%2F166XL.php&rfr_id=info%3Asid%2Fen.wikipedia.org%3APhone+connector+%28audio%29" class="Z3988"></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Phone_connector_(audio)&action=edit&section=33" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid 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//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/59px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a></span></div> <div class="side-box-text plainlist">Wikimedia Commons has media related to <span style="font-weight: bold; font-style: italic;"><a href="https://commons.wikimedia.org/wiki/Category:Phone_connectors_(audio)" class="extiw" title="commons:Category:Phone connectors (audio)">Phone connectors (audio)</a></span>.</div></div> </div> <ul><li><a rel="nofollow" class="external text" href="https://www.bbc.com/news/magazine-35253398">The 19th Century plug that's still being used</a>—<a href="/wiki/BBC_News" title="BBC News">BBC News</a></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=7davoSDgSHw">"The Rise and Fall of the Headphone Jack"</a>. <a href="/wiki/CNBC" title="CNBC">CNBC</a>. 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href="/wiki/DIN_connector" title="DIN connector">DIN</a> <ul><li><a href="/wiki/Mini-DIN_connector" title="Mini-DIN connector">Mini-DIN</a></li></ul></li> <li><a class="mw-selflink selflink">Audio jack</a></li> <li><a href="/wiki/RCA_connector" title="RCA connector">RCA</a></li> <li><a href="/wiki/Speaker_terminal" title="Speaker terminal">Speaker spring terminal</a></li> <li><a href="/wiki/Speakon_connector" title="Speakon connector">Speakon</a></li> <li><a href="/wiki/XLR_connector" title="XLR connector">XLR</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Digital audio</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/BNC_connector" title="BNC connector">BNC</a></li> <li><a href="/wiki/D-subminiature_(professional_audio)" title="D-subminiature (professional audio)">D-sub</a></li> <li><a href="/wiki/S/PDIF" title="S/PDIF">S/PDIF</a></li> <li><a href="/wiki/TOSLINK" title="TOSLINK">TOSLINK</a></li> <li><a href="/wiki/XLR_connector" title="XLR connector">XLR</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Video</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/BNC_connector" title="BNC connector">BNC</a></li> <li><a href="/wiki/Component_video#RGB_analog_component_video" title="Component video">Component RGB</a></li> <li><a href="/wiki/YPbPr" title="YPbPr">Component YPbPr</a></li> <li><a href="/wiki/Composite_video" title="Composite video">Composite video</a></li> <li><a href="/wiki/D-Terminal" title="D-Terminal">D-Terminal</a></li> <li><a href="/wiki/DB13W3" title="DB13W3">DB13W3</a></li> <li><a href="/wiki/VESA_Digital_Flat_Panel" title="VESA Digital Flat Panel">DFP</a></li> <li><a href="/wiki/DIN_connector" title="DIN connector">DIN</a> <ul><li><a href="/wiki/Mini-DIN_connector" title="Mini-DIN connector">Mini-DIN</a></li></ul></li> <li><a href="/wiki/DMS-59" title="DMS-59">DMS-59</a> <ul><li><a href="/wiki/Low-force_helix" title="Low-force helix">LFH</a></li></ul></li> <li><a href="/wiki/Digital_Visual_Interface" title="Digital Visual Interface">DVI</a> <ul><li><a href="/wiki/Mini-DVI" title="Mini-DVI">Mini-DVI</a></li> <li><a href="/wiki/Micro-DVI" title="Micro-DVI">Micro-DVI</a></li></ul></li> <li><a href="/wiki/RCA_connector" title="RCA connector">RCA</a></li> <li><a href="/wiki/S-Video" title="S-Video">S-Video</a></li> <li><a href="/wiki/Unified_Display_Interface" title="Unified Display Interface">UDI</a></li> <li><a href="/wiki/VGA_connector" title="VGA connector">VGA</a> <ul><li><a href="/wiki/Mini-VGA" title="Mini-VGA">Mini-VGA</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Audio and video</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Apple_Display_Connector" title="Apple Display Connector">ADC</a></li> <li><a href="/wiki/Belling-Lee_connector" title="Belling-Lee connector">Belling-Lee</a></li> <li><a href="/wiki/CCJ_connector" title="CCJ connector">CCJ/EIAJ</a></li> <li><a href="/wiki/VESA_Enhanced_Video_Connector" title="VESA Enhanced Video Connector">EVC</a></li> <li><a href="/wiki/F_connector" title="F connector">Type F</a></li> <li><a href="/wiki/HDBaseT" title="HDBaseT">HDBaseT</a></li> <li><a href="/wiki/HDMI" title="HDMI">HDMI</a></li> <li><a href="/wiki/DisplayPort" title="DisplayPort">DisplayPort</a> <ul><li><a href="/wiki/Mini_DisplayPort" title="Mini DisplayPort">mDP</a></li></ul></li> <li><a href="/wiki/Mobile_High-Definition_Link" title="Mobile High-Definition Link">MHL</a> (<a href="/wiki/SuperMHL" class="mw-redirect" title="SuperMHL">superMHL</a>)</li> <li><a class="mw-selflink selflink">Minijack</a></li> <li><a href="/wiki/VESA_Plug_and_Display" title="VESA Plug and Display">P&D</a></li> <li><a href="/wiki/PDMI" title="PDMI">PDMI</a></li> <li><a href="/wiki/SCART" title="SCART">SCART</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Visual charts</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_video_connectors" title="List of video connectors">List of video connectors</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">General-purpose</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Thunderbolt_(interface)" title="Thunderbolt (interface)">Thunderbolt</a></li> <li><a href="/wiki/USB" title="USB">USB</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Audio_and_video_interfaces_and_connectors80" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Audio_and_video_interfaces_and_connectors" title="Template:Audio and video interfaces and connectors"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Audio_and_video_interfaces_and_connectors" title="Template talk:Audio and video interfaces and connectors"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Audio_and_video_interfaces_and_connectors" title="Special:EditPage/Template:Audio and video interfaces and connectors"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Audio_and_video_interfaces_and_connectors80" style="font-size:114%;margin:0 4em"><a href="/wiki/Audio_and_video_interfaces_and_connectors" title="Audio and video interfaces and connectors">Audio and video interfaces and connectors</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Audio only</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:7em">Analog</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/PC_System_Design_Guide" title="PC System Design Guide">PC System Design Guide</a> <ul><li>connectors: <a class="mw-selflink selflink">TRS</a> 3.5 mm</li></ul></li> <li><a href="/wiki/Balanced_audio" title="Balanced audio">Balanced audio</a> <ul><li>connectors: <a class="mw-selflink selflink">TRS</a> 6.35 mm</li> <li><a href="/wiki/XLR_connector" title="XLR connector">XLR</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7em">Digital</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/S/PDIF" title="S/PDIF">S/PDIF</a> <ul><li>connectors: <a href="/wiki/RCA_connector" title="RCA connector">RCA jack</a>, coaxial</li> <li><a href="/wiki/TOSLINK" title="TOSLINK">TOSLINK</a>, optical</li> <li><a href="/wiki/BNC_connector" title="BNC connector">BNC</a></li></ul></li> <li><a href="/wiki/AES3" title="AES3">AES3</a>, AES/EBU <ul><li>connectors: <a href="/wiki/RCA_connector" title="RCA connector">RCA jack</a></li> <li><a href="/wiki/XLR_connector" title="XLR connector">XLR</a></li> <li><a href="/wiki/TOSLINK" title="TOSLINK">TOSLINK</a>, optical</li> <li><a href="/wiki/BNC_connector" title="BNC connector">BNC</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Video only</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:7em">Analog</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Video_Graphics_Array" title="Video Graphics Array">VGA</a> <ul><li>connectors: <a href="/wiki/D-subminiature" title="D-subminiature">DB-15</a></li> <li><a href="/wiki/Digital_Visual_Interface" title="Digital Visual Interface">DVI-A</a></li></ul></li> <li><a href="/wiki/Composite_video" title="Composite video">Composite</a> <ul><li>connectors: <a href="/wiki/RCA_connector" title="RCA connector">RCA jack</a> yellow</li></ul></li> <li><a href="/wiki/S-Video" title="S-Video">S-Video</a> <ul><li>connectors: <a href="/wiki/Mini-DIN_connector" title="Mini-DIN connector">Mini-DIN</a> 4 pin</li></ul></li> <li><a href="/wiki/Component_video" title="Component video">Component</a> <ul><li>connectors: <a href="/wiki/RCA_connector" title="RCA connector">RCA jacks</a> × 3</li> <li><a href="/wiki/Composite_video" title="Composite video">Composite</a></li></ul></li> <li><a href="/wiki/S-Video" title="S-Video">S-Video</a>, and <a href="/wiki/Component_video" title="Component video">Component</a> <ul><li>connectors: <a href="/wiki/Video-in_video-out" title="Video-in video-out">VIVO</a> using <a href="/wiki/Mini-DIN_connector" title="Mini-DIN connector">Mini-DIN</a> 9 pin</li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7em">Digital and <br />analog</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Digital_Visual_Interface" title="Digital Visual Interface">DVI</a> <ul><li>connectors: <a href="/wiki/Digital_Visual_Interface" title="Digital Visual Interface">DVI-I/DVI-D</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Video and audio</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="Digital7" scope="row" class="navbox-group" style="width:7em">Digital</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/HDMI" title="HDMI">HDMI</a> <ul><li>connectors: <a href="/wiki/HDMI" title="HDMI">HDMI</a> connector</li></ul></li> <li><a href="/wiki/DisplayPort" title="DisplayPort">DisplayPort</a> <ul><li>connectors: <a href="/wiki/DisplayPort" title="DisplayPort">DisplayPort</a> connector</li></ul></li> <li><a href="/wiki/HDBaseT" title="HDBaseT">HDBaseT</a> <ul><li>connectors: <a href="/wiki/8P8C" class="mw-redirect" title="8P8C">8P8C</a> connector</li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" 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