This tutorial will explain the differences between 3-pole (TRS) and 4-pole (TRRS) plugs and sockets.
If you’ve ever tried connecting a headset/microphone designed for one particular manufacturer’s phone to another and it didn’t work, it may be because the pinout was wrong.
I ran into this recently with the Movo PM10 Lavalier Microphone for iPhone and trying to use it with other devices, such as a camcorder, etc.
We sell the different parts to do your own prototyping and make your own custom cables/devices, however it doesn’t do much good if you don’t understand the pinout as it relates to your device. So hopefully this article will help you better understand these pinouts.
For this article, I will be focusing on standard 3.5mm (1/8″) TRS and TRRS plugs and sockets.