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- 3.3 Feet /1 Meter : Electronics
Custom TRS Dual Mono Cable - Right Angle/Shorty – Creation Music Company
Castline Gold 3.5mm TRS to 1/4 TS Mogami 2549 Stereo to Mono Summing Cable with Resistors
Amazon.com: UGREEN 1/8 to 1/4 Stereo Cable 3.5mm TRS to Dual 6.35mm 1/4 TS Mono Y Splitter Audio Cord Adapter Compatible with iPhone, PC, Computer Sound Card, Mixer, Multimedia Speaker, Home Stereo
The BEST TRS to Dual Mono Insert Cable - 100% US Made
1/4" Stereo TRS to Dual 1/4" Mono Adapter - Strymon
Monoprice 3.5mm TRS Stereo Plug to 3.5mm TS Mono Jack Adapter, Gold Plated - Monoprice.com
Amazon.com: J&D 1/4 inch TS to 3.5mm TRS Cable, Heavy Duty Copper Shell 6.35mm 1/4 inch Male to 3.5 mm 1/8 inch Male Mono Interconnect Stereo Aux Jack Adapter Cable, 6.5 Feet : Electronics
6ft Premium 3.5mm TRS Stereo Male to 2 1/4" Mono Male Y-Breakout Cable - Walmart.com
10ft 6.35mm (1/4 Inch) TS Mono Plug to 3.5mm TRS Stereo Jack
Livewire Essential Stereo 3.5mm Female TRS to Mono 1/4" Male TS Adapter Black | Guitar Center
100pcs Connector Metal 6.35mm 1/4" Male Mono/stereo Audio Trs Jack Plug Connector Soldering - Connectors - AliExpress