This 3.5mm stereo to Twin 3.5mm Stereo duplicates a 2-channel signal to two outputs. This Maplin 3.5mm Aux Stereo 3-Pole Jack Plug to Twin 3.5mm Female Jack Plug Cable is commonly required when connecting two pairs of headphones to a single audio output. For example when two users wish to listen to one MP3 player with their own set of headphones
