Apple hides a secret circuit inside the Lightening-to-3.5mm adapter
![Making a [4-Pole TRRS to 3.5mm Stereo & Mic Adapter (Male to 2x Female)] from an iphone headphone split… | Earphones wire, Headphone splitter, Electronic schematics](https://i.pinimg.com/originals/37/0e/d0/370ed0116cacc2ce9c1a0bd6087bce39.jpg "Making a [4-Pole TRRS to 3.5mm Stereo & Mic Adapter (Male to 2x Female)] from an iphone headphone split… | Earphones wire, Headphone splitter, Electronic schematics")
Making a [4-Pole TRRS to 3.5mm Stereo & Mic Adapter (Male to 2x Female)] from an iphone headphone split… | Earphones wire, Headphone splitter, Electronic schematics
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