Hosa Stereo 1/8" TRS to Two Mono 1/4" TS Cable | zZounds
Y splitter Stereo to Mono cable x3 units
Rock n Roll Rentals - Stereo Male 1/8" AUX to 2x Mono TS 1/4" Male Y Cable (A206MPY)
Stereo to mono summing cable 1/8" 3.5mm TRS to 1/4" 6.35mm TS WITH RESISTORS | eBay
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 :
Stereo Jack to 2 x Mono Jack Plugs Cable 30cm - The GigRig USA
Amazon.com: 3ft CablesOnline 3.5mm Stereo Male to Dual (Rd/Wh) Mono 3.5mm Blue Audio Breakout Cable, AM-603C : Electronics