Headphone Extension Cable (Mono, Straight, 5ft) is a cable that allows you to extend the length of your headphone cables by 5 feet. This can be useful if you have a long reach from your audio source to your headphones, or if you need more flexibility in positioning your headphones. The mono configuration means that the extension cable carries only one audio channel, which is suitable for use with mono headphones or if you only need to use one earpiece. The straight configuration means that the extension cable has a straight connector on both ends, rather than a coiled cord that expands and contracts as you move.