3m 3.5mm Stereo Plug to 2x Mono Jack Adapter Cable AUX Audio Line Spli — LoopsDirect
Amazon.com: 3.5mm Stereo Male to Dual 3.5mm Mono Male Audio Cable, 1ft 3.5mm 1/8" TRS Male to 2 x 3.5mm 1/8" TS Male Y Breakout Cable Splitter Adapter for Headphone, Speaker :
3.5mm Mono Plug Audio Jack Connector Adapter Headphone Plug (X-172) - China Audio Connector, Phone Connector | Made-in-China.com