Split one mini jack stereo audio output into two with 4XEM’s Mini Jack Headphone Splitter (4XIJACK). Use two sets of headphones or speakers with your iPhone, iPod, MP3 or CD player. Excellent sound-no audio degradation. Features one 3.5mm Male and two 3.5mm Female connectors.Problem it solves: Split one stereo audio headphone output into two for sharing music on your iPod, iPhone or other audio device.4XEM gear is respected industry wide for its high performance, premium quality and durability.