Though I would like to blame Ted Nugent for setting down his guitar in front of his amp and causing ungodly feedback, I recall not being able to hear for a couple of days several times after Kiss concerts also. I think it is a fallacy that guitar players and drummers are damaging bass players. The damage happens when vibration causes the little hair like things to lay down in your in your ears.Since I like to feel my pants legs moving standing in front of my SVT probably did it to myself. However, high blood pressure can cause it too. Just sucks when someone is trying to put the move on you and you keep saying huh.