The TRS insert connector uses a single 6.35mm TRS jack to simultaneously send and return a signal through an external processor (compressor, EQ) via a Y-cable: Tip = Send, Ring = Return, Sleeve = Ground.
| Pin | Name | Function | Type |
|---|---|---|---|
| T | Tip / Send | Signal send to external processor | ADC |
| R | Ring / Return | Signal return from external processor | ADC |
| S | Sleeve | Ground / common | GND |