CY Black 3.5mm Stereo Male to Double 3.5mm Female Audio Headphone Y Splitter Cable with Volume Switch 3.5mm Stereo Audio 1 Male to 2 Female Splitter Adapter With Volume Switch Connectors: 3.5mm 1 Male to 3.5mm 2 Female. With this adapter you and a friend can both listen to your music player at the same time. Dual-independent volume controls - set it as loud or quiet as you want. Plug two sets of 3.5mm headphones into one standard 3.5mm stereo socket with this adapter. Great for your iPod, Walkman, PDA, computer, hifi system, or other portable media players. Excellent sound reproduction and signal to noise ratio.