1pcs 1/4" Mono Stereo Audio Jack Plug Adapter Male To Female 3.5mm / 6.35mm Dual Jack Headphone Microphone Y Splitter Converter - Connectors - AliExpress
RCA Plug to 1/4in (6.35mm) TS Mono Jack Adapter, Gold Plated – FlexRadio
1/4 Mono Plug to 3.5mm Stereo Jack | ShowMeCables.com
Amazon.com: DC Power Adapter 5.5 mm x 2.1 mm in Line Socket to 3.5 mm Mono Jack Plug Coaxial Power Converter for CCTV Equipment, Video Surveillance Camera, LED Lights, Notebook, PC : Electronics
Euroconnex 2292 Mono-Estéreo Jack 3.5 To 2.5 mm Adapter Black| Techinn
Monoprice 1/4in (6.35mm) Ts Mono Plug To Rca Jack Adapter, Gold Plated (yellow Plastic Center) : Target