The Cables to Go 40408 is a black 12 foot audio extension cable that will allow you to extend the reach of your 3.5mm audio devices. This audio extension cable connects 1 Male 3.5mm to 1 Female 3.5mm. C2G / Cables to Go 40408 3. The 3.5mm stereo audio extension cable is perfect for extending an existing 3.5mm cable in audio applications. This cable increases the distance from devices such as MP3 or CD players, tablets, speakers, PC/TV tuners and other audio devices, allowing the device to be placed in the most convenient location. Fully molded connectors provide excellent strain relief while nickel plated contacts provide superior connectivity and a durable, long life.