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Plug your iPhone Earphone into a Standard 3-Conductor Jack
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4-pin mini jack audio cables & adapter – ProXtend
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Audio Technica Microphone Adapter 4 Pin Hirose to Sennheiser 3.5mm Screw on Jack | eBay
Vanco International S-Video Mini Din 4 Pin Female Jack to RCA Male Plug
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Reduce 3.5mm 4-Conductor Plug to Fit into 2.5mm TRRS Jack
Gold TRRS 4 Pin/Pole 3.5mm 1/8" Jack Plug Connector Replace Audio/Video/Headset | eBay
3.5mm Mini Female Jack Stereo 4 Pin 4 Wire Audio W/ Cable Cord Connector DIY 1FT | eBay
Where can I find an adapter for 'Four-conductor, two-shield' to 3.5mm audio? - Quora
