Amazon.com: 3.5mm Stereo Male to Dual 3.5mm Mono Male Audio Cable, 1ft 3.5mm 18 TRS Male to 2 x 3.5mm 18 TS Male Y Breakout Cable Splitter Adapter RFAdapter for Headphone, Speaker,
Pro Co Sound Stereo Mini Male to 2 Mono 1/4" Male IPMB2Q-20 B&H
6-foot 3.5mm Stereo to 1/4" Mono Audio Adapter Cable - C. B. Gitty Crafter Supply
Stereo to Mono Audio Output Cable - Azden
Amazon.com: SHULIANCABLE 3.5mm 1/8" TRS to Dual 6.35mm 1/4" TS Cable, Mono Stereo Y-Splitter Audio Cable for iPhone, iPod, Multimedia Speakers and Home Stereo,etc (3.3Ft/1M) : Electronics
Stereo-to-Mono Audio Cable for Single-Ear Monitoring for MX PRO and M6 PRO In-Ear Monitors (Clear) - MEE audio
Amazon.com: Disino 1/4 inch TS to 1/8 inch TRS Cable, 1/4" TS Mono to 1/8 inch(3.5mm) TRS Stereo Interconnect Adapter Cable,Mono to Stereo Patch Cord - 6.6 Feet/2 Meters : Electronics