Amazon.com: C2G Legrand RCA Male to RCA Female Signal Splitter Cable, Black RCA to RCA Splitter, 6 Inch Audio Stereo Y-Cable, 26 AWG Audio Signal Converter Cable, 1 Count, C2G 03177 : Electronics
Amazon.com: RCA Male to 3.5mm Female Adapter, 2 Pack RCA Plug to 1/8" Female Mono Jack Audio Connector Converter, Gold Plated UIInosoo for Receiver, Subwoofer, Speaker, Audio Equipment : Electronics
Cable Wholesale Mono to RCA adapter, 1/4 Mono Male / 2 RCA Female, 6in Y- cable, 6 - Fred Meyer
3.5mm Mono Audio to RCA Female Adapter
Monoprice RCA Plug to 3.5mm TRS Stereo Jack Adapter, Gold Plated - Monoprice.com
3.5mm Stereo Male to RCA Mono Female Audio Adapter,silver - Walmart.com