This lead is usually marked with a + sign. 1.) it has a stereo or balanced signal or it’s a midi jack, so it needs the trs. Note that this will unbalance the connection between the two pieces of equipment. If you have a stereo trs 1/4 cable, is that the same as the balanced trs 1/4 cable, but left is on. Web simply put, there are 3 reasons to use trs jacks:
