Consumer electronics devices such as digital cameras, camcorders, and portable DVD players use 3.5 mm connectors for composite video and audio output. Typically, a TRS connection is used for mono unbalanced audio plus video, and a TRRS connection for stereo unbalanced audio plus video.
TRS means Tip Ring Sleeve (3-pole) and TRRS means Tip Ring Ring Sleeve (4-pole).
TRS is commonly used for stereo headphones, mono headsets, stereo microphones, auxiliary cables, etc.
TRRS is commonly used for stereo headsets, such as cell phone headsets with an inline microphone, audio/video cables with stereo audio, etc.
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