I just bought a used G90 on Reverb.com, it's my first wireless unit. I don't have an amp at home, I just have a scarlett and a vst that I use to practice, so admittedly I haven't used the wireless on my actual rig yet. However, before even being powered, the second I plug the G90 into the wall I get a high pitched noise frequency. I have tried several power cables, I have used every channel and verified it has 0 to do with the TX. The problem exists the second that I plug it into a wall.
What could be causing this?
