StarTech.com - Slim Stereo Splitter Cable - 3.5mm Male to 2x 3.5mm Female

The MUY1MFFS Slim 3.5mm Stereo Splitter Cable/Y-cable features one 3.5mm male and two 3.5mm female audio connectors, splitting a single headphone jack into two. A practical, cost-effective audio solution, the 3.5mm stereo splitter cable features slim connector molding that fits easily into a 3.5mm headphone jack, even if the iPod/iPhone/iPad/MP3 player is in a protective case.