Steren Electronics 3.5 mm Stereo Female-to-Female Coupler

Audio cable extender

This 3.5 mm stereo coupler joins two cables that both have male plugs, creating a single longer run for headphones, speakers or line-level signals. The nickel-plated female sockets resist corrosion and maintain signal integrity across the connection. It is a passive adapter that requires no power or configuration. Builders needing digital optical or balanced XLR links should choose a different adapter type.

Simple plug-and-play fitting

Push each male 3.5 mm plug into a female socket until it clicks; no tools, drivers or soldering are involved. The only common issue is a loose fit if one plug barrel is oversized or the socket spring has fatigued, which can cause intermittent audio. Ensure both cables are fully seated before routing the joint behind equipment. The coupler adds negligible bulk, so cable-management clips designed for single 3.5 mm leads still work.