I have tried to explain the feedback thing before and he doesn’t get it. Next time he complains I’m going to hand him an SG tuned to C in his hands, tell him to stand in front of the speakers, and show him the difference between clean and quiet, fuzz, a Russian muff, and a Russian muff with the volume up so loud that it screeches any time the strings aren’t muted. If his head doesn’t explode I might engage the Hizumitas.