Amazon.com: 1/8 Mono Jack to 1/4 Stereo Plug Headphone Adapter : Electronics
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 :
2 Pcs 3.5mm Female Stereo To Male Mono Airplane Headphone Jack Audio Adapter 634458361712 | eBay
Williams Sound 1/8" Stereo Jack to 1/8" Mono Plug Adapter ADP
Stereo Mono 3.5 Adapter | Stereo Male Adapter | Jack 3.5 2 Pole | Mini Audio Plug - 1pair - Aliexpress
Ultra-compact 4-channel Stereo Headphone Amplifier Upgraded Mini Audio Amp with Mono & Stereo Switch Power Adapter Professional Mono/Stereo Audio Amp for Studio and Stage - Walmart.com
Amazon.com: Vention 3.5mm Female to 2.5mm Male Audio Adapter Converter Premium Quality Headphone Earphone Headset 2.5mm to 3.5mm 3 Ring Jack Stereo or Mono 2 Pack : Electronics
Amazon.com: TNP 3.5mm TRS to 2 Dual 1/4 Inch TS Stereo Audio Breakout Cable Adapter - 3.5mm 1/8" Female to 1/4" 6.35mm Mono TS Male Headphone Jack Plug Y Splitter Cable Combiner
Mono-to-Stereo Adapter Corrects Missing Sound from 1 Side
Monoprice Metal 1/4in (6.35mm) Ts Mono Plug To 3.5mm Trs Stereo Jack Adapter, Gold Plated : Target
Califone 3068AV-10L Switchable Stereo/Mono Over-Ear Headphones, 3.5mm with 1/4 inch Adapter Plug, Black, Pack of 10
Gold Plated 3.5mm Male to 2.5mm Female Audio Headphone Adapter Headset Converter 3 Ring Jack Plug - Stereo or Mono (2-Pack) - Walmart.com