USB MIDI 2.0 Specification
1. TS Type Male Audio jack
These types of audio jacks does not support stereo sound and microphone, which means there is no left and right. You will get same sound from both the sides. Below is the pinout of TS type male audio jack.
Application: Still used on musical equipment (especially in electric guitars) and aviation radios.
2. TRS Type Male Audio jack
Here, in the name of TRS, ‘T’ stands for Tip, ‘R’ stands for Ring and ‘S’ stands for Sleeve. These types of audio jacks supports stereo sound and but doesn’t supports microphone. So, using this you can only listen music but can’t talk on calls. Below is the pinout of TRS type male audio jack.
Application: Speakers, microphone, keyboards and etc.
3. TRRS Type Male Audio jack
A TRRS type audio jack have four conductors and are most popular with smartphones and tablets. The sequence of TRRS type audio jack is Tip-Ring-Ring-Sleeve and it includes both stereo and microphone functionality. There are number of standards to be used while making these audio jacks such as OMTB and CTIA. This is the reason behind your smartphone doesn’t supports other brands of headphone. Below is the pinout of TRS type male audio jack.
