TRS vs TRRS Audio Connectors

Published by Dongguan Dajiang Electronics Co., Ltd /HK Dajiang Group Limited November 05,2026

TRS vs TRRS Audio Connectors

Field	English
URL slug	/guides/trs-vs-trrs-audio-connectors/
Meta description	Understand the difference between TRS and TRRS audio connectors, including conductors, channel configuration, microphone support, and compatibility.
Primary audience	Audio engineers, headset designers, OEM buyers

English copy

TRS and TRRS describe the number of conductive sections on a plug. The correct choice depends on the signal channels and functions required by the equipment.

TRS is commonly used for mono balanced or stereo unbalanced signals, depending on the wiring. TRRS adds a fourth contact and can support an additional function such as a microphone or control signal in compatible systems.

Compatibility depends on wiring convention, contact assignment, jack design, plug geometry, and the host device. For OEM products, document the pinout clearly and test the complete plug, jack, cable, and device combination.

FAQ

Question	Answer
Does TRRS always support a microphone?	No. The wiring and host-device standard must be compatible.
Can a TRS plug be inserted into a TRRS jack?	It may be mechanically possible, but the electrical function depends on the wiring.
What should be shown on a drawing?	Show contact order, pin assignment, dimensions, cable cores, and electrical requirements.