I was just playing bass yesterday when all of a sudden my amp just died. No sound at all coming out of it. I know it is the amp because I have tried several cables nad several different instruments on it, and still no sound, not even the slight hum that is usually there when it is on whether I am playing or not. Any idea what the problem could be or what I could do about it? It seems really strange for this to happen, especially considering I was playing at a very low volume and playing a passive bass.