Yamaha EMX-860XT 8 Channel Powered MixerNotes Monitor main volume potentiometer broken at shaft but is still easily controllable Switches are a bit dirty mixer seems to have sat unused for a while. Cleaned up considerably with repeated pressing during testing Reverb effect is not very strong unsure if that is characteristic of this mixer or signs of an issue with effect Power switch does not seem to function amp is always on when plugged in. Must unplug from outlet to power off. A Yamaha