Amazon.com: 3ft 3.5mm to Dual 1/4, Stereo to Mono Splitter, 3.5mm 1/8" TRS Stereo Female to 6.35mm TS Mono Male Y Audio Cable, for Speakers, Mixer, Audio, Home Theater : Electronics
Amazon.com: J&D 3.5mm 1/8 inch TRS Male to Dual 6.35mm 1/4 inch TS Male Mono Stereo Y-Cable Splitter for Amplifiers/Mixer Audio Recorder, Zinc Alloy Housing, Nylon Braid, Gold Plated Copper Shell, 1.5
GearIT Dual 1/4 to 1/8 Audio Cable TS Mono Stereo Y Cable Splitter, 15 ft 2-Pack - Walmart.com
Y Splitter Cable Dual 6.35mm Mono TS Male Right Angle 1/4" TRS Stereo | eBay