3.5mm 4 Conductor Male to Female 12 ft Extension

4-conductor audio cables are super versatile, mainly used for running stereo audio (Left +/-, Right +/-) in one cable for home theater/in-wall setups, connecting to stereo volume controls, or for advanced speaker connections like bi-wiring / bi-amping for better sound. Also common for headsets with mics (like 3.5mm TRRS jacks) to carry stereo audio plus a microphone signal.