Monoprice 3.5mm TS Mono Plug to 3.5mm TRS Stereo Jack Adapter, Gold Plated - Monoprice.com
3.5mm Mono Plug to 2x3.5mm Stereo Jack Adapter
Saramonic 3.5mm TRS Female to USB Type-C Adapter Cable for Mono/Stereo Audio to Android (3") - Stewarts Photo
Hosa GPM-179 Mini Stereo to Mono 1/4 inch Headphone Adapter | Sweetwater
Amazon.com: C2G 40634 3.5mm Stereo Male to 3.5mm Mono Female Adapter, TAA Compliant, Silver : Electronics
Single Stereo to Mono Converter, rca audio stereo to mono adapter summing box
Hosa Technology Stereo 3.5mm Female to Dual Mono 3.5mm YMM-492
Hosa Hosa Y-Cable, 3.5mm Stereo Male to Dual 3.5mm Mono Female - Control Voltage
1/4" Stereo Audio Jack Plug Adapter Single Male To Female 6.35mm Dual Mono Stereo Jack Headphone Microphone Y Splitter Converter - Audio & Video Cables - AliExpress
Amazon.com: Monoprice 107128 3.5mm Mono Plug to 3.5mm Stereo Jack Adaptor, Gold Plated : Everything Else
Y Adapter Mini Jack stereo to 2x 1/4 Jack mono (female)
Amazon.com: C2G Value Series One RCA Mono Male to Two RCA Stereo Female Y-Cable, Black (6 Inches) - 03177 : Electronics
1/4F Mono - 1/8M Stereo Adapter | ALAMO MUSIC
1x 3.5mm Female Stereo to 2.5mm Male Mono Headphones Aux Adapter Converter Cable | eBay