2.5mm Audio 2.5 MONO Stereo Male Plug Jack DIY Solder Headphones Connector Cable | eBay
3.5mm Stereo Panel Mount Jack
Amazon.com: Disino 1/8 Inch TRS Stereo to Dual 1/4 inch TS Mono Y-Splitter Cable 3.5mm Aux Mini Jack Stereo Breakout Cable Path Cords - 3 feet : Electronics
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Comprehensive 3.5mm Stereo Jack to Two RCA Plugs Y MJS/2PP-C B&H
Amazon.com: 3.5mm Stereo Male to Dual 3.5mm Mono Male Audio Cable, 1ft 3.5mm 1/8" TRS Male to 2 x 3.5mm 1/8" TS Male Y Breakout Cable Splitter Adapter for Headphone, Speaker :
Mono-to-Stereo Adapter Corrects Missing Sound from 1 Side