How do you split stereo to left/right mono for dual stereo speakers? - Sound Design Stack Exchange
3 FT SPLITTER CABLE 1/4" TRS STEREO MALE DUAL 1/4" MONO KIRLIN Y-ADAPTER PATCH 685646948550 | eBay
Befaco Stereo to Mono – Y Splitter Cable – Thonk – DIY Synthesizer Kits & Components
X-keys 3.5mm Stereo Male to Two 3.5mm Mono Female Left/Right Splitter Cord
2-Pack Hosa 1/4" Stereo TRS Male > 2 TS Mono Female Jack Breakout Splitter Cable
6.35mm 1/4 inch Stereo TRS Female to 2 Dual 6.35mm Mono TS Male Y Splitter Cable | eBay
Neutrik 1/4" TRS Jack Split into Dual Mono Jacks. Stereo Splitter / Summing Cable
Y-Cable Audio Splitter Dual 6.35mm Angle MONO male to 1/4 90°Right TRS Plug | eBay
TRS to Dual Mono Splitter | Rattlesnake Cable Company
SiYear 1/4" Stereo to Dual 1/4" Mono Insert Cable, 6.35mm (Quarter inch Female TRS to Dual 1/4 Inch Male Y Splitter Breakout Cable Patch Cord (50CM) : Amazon.ca: Electronics
6.35mm 1/4 inch Stereo TRS Female to 2 Dual 6.35mm Mono TS Male Y Splitter Cable on OnBuy