编辑“︁TRS端子”︁（章节）

=== 航空和军用接口 ===
{{Further|{{link-en|航空耳麦接口列表|List of aviation headset connectors}}}}
[[File:PJ-055 and PJ-068 Connectors.png|thumb|PJ-055（上）和PJ-068（下）型通用航空音频插头]]
[[File:Aircraft plug.gif|thumb|U-174/U或Nexus TP120型插头，常用于军用飞机和民用直升机]]

美国军方使用包括{{frac|9|32}}英寸（7.14mm）和{{frac|1|4}}英寸（6.35mm）接口<ref>MIL-J-641</ref>在内的多种TRS端子。

商用和[[通用航空]]（GA）飞机通常使用一对TRS端子。耳机使用标准的{{frac|1|4}}英寸的2芯或3芯插头，型号为PJ-055。麦克风则使用较小的{{frac|3|16}}英寸（5.23mm）的3芯插头，型号为PJ-068。

在军用飞机和民用直升机上，使用U-174/U（TP-101）<ref>{{cite web 
|title= Item # TP-101, Telephone Plug 
|url= https://connectors.nexus.com/item/telephone-plugs-and-jacks/telephone-plugs/tp-101 
|website= Amphenol NEXUS Technologies 
|access-date= 2024-03-03 
|language= en-us 
|archive-date= 2023-03-07 
|archive-url= https://web.archive.org/web/20230307045022/https://connectors.nexus.com/item/telephone-plugs-and-jacks/telephone-plugs/tp-101 
|dead-url= no 
}}</ref>，也称U-93A/U（Nexus TP-102）<ref>{{cite web 
|title= Item # TP-102, Telephone Plug 
|url= https://connectors.nexus.com/item/telephone-plugs-and-jacks/telephone-plugs/tp-102 
|website= Amphenol NEXUS Technologies 
|access-date= 2024-03-10 
|language= en-us 
|archive-date= 2023-03-07 
|archive-url= https://web.archive.org/web/20230307045836/https://connectors.nexus.com/item/telephone-plugs-and-jacks/telephone-plugs/tp-102 
|dead-url= no 
}}</ref>和Nexus TP-120<ref>{{cite web 
|title= Item # TP-120, Telephone Plug 
|url= https://connectors.nexus.com/item/telephone-plugs-and-jacks/telephone-plugs/tp-120 
|website= Amphenol NEXUS Technologies 
|access-date= 2024-03-10 
|language= en-us 
|archive-date= 2023-03-07 
|archive-url= https://web.archive.org/web/20230307124327/https://connectors.nexus.com/item/telephone-plugs-and-jacks/telephone-plugs/tp-120 
|dead-url= no 
}}</ref>，又称美国北约插头（US NATO plugs）。此种插头直径为0.281英寸（7.1mm），内含4条线芯，耳机2条，麦克风2条。此外，还有直径相同但长度稍长的U-384/U（Nexus TP-105），线芯从4条变为5条<ref>{{cite web 
|title= Item # TP-105, Telephone Plug 
|url= https://connectors.nexus.com/item/telephone-plugs-and-jacks/telephone-plugs/tp-105 
|website= Amphenol NEXUS Technologies 
|access-date= 2024-03-10 
|language= en-us 
|archive-date= 2023-03-07 
|archive-url= https://web.archive.org/web/20230307045337/https://connectors.nexus.com/item/telephone-plugs-and-jacks/telephone-plugs/tp-105 
|dead-url= no 
}}</ref><ref>{{cite web 
|url= https://assets.bose.com/content/dam/Bose_DAM/Web/consumer_electronics/global/products/headphones/a20_aviation_headset/pdf/746706_og_a20_en.pdf
|url-status= live
|title= Bose A20 Aviation Headset Owner's Guide
|date= 2022
|website= Bose
|language= en
|format= PDF
|archive-url= https://web.archive.org/web/20231207151849/https://assets.bose.com/content/dam/Bose_DAM/Web/consumer_electronics/global/products/headphones/a20_aviation_headset/pdf/746706_og_a20_en.pdf
|archive-date= 2023-12-07
|archive-format= PDF
|access-date= 2024-04-04}}</ref>。

另有一种四芯的671型（10H/18575）插头，直径为0.298英寸（7.57mm）<ref>{{cite web 
|url= https://www.casa.co.nz/connectors/multipole/audio/Avionics-671Series-Data_1p.pdf
|url-status= live
|title= Type 671 datasheet
|website= CASA
|language= en
|format= PDF
|archive-url= https://web.archive.org/web/20230408152038/https://www.casa.co.nz/connectors/multipole/audio/Avionics-671Series-Data_1p.pdf
|archive-date= 2023-04-08
|archive-format= PDF
|access-date= 2024-04-04}}</ref>，用在许多英国军用飞机上的耳麦上，因此又被称为英国北约插头（UK NATO connector）或欧洲北约插头（European NATO connector）<ref name="Scott Bouch">{{cite web 
|title= British Aircrew 671-Type Plug / NATO Plug 
|url= https://www.scottbouch.com/aircrew-uk-connector-plug-671-type-nato.htm 
|website= www.scottbouch.com 
|access-date= 2024-03-10 
|archive-date= 2023-03-05 
|archive-url= https://web.archive.org/web/20230305135506/https://www.scottbouch.com/aircrew-uk-connector-plug-671-type-nato.htm 
|dead-url= no 
}}</ref>。