Just had my second amp blow up in my face. Amp was just tagged "bad." So I go and plug it in to test it, and immediately hear "BANG!" followed by a bit of smoke. Turns out this one survived... well, survived probably isn't the best word for it... went through a lightning strike. It's a crappy little Soundtech, and if I remember correctly, it was outputting an interesting tone at full volume on channel two, probably somewhere around 200 Hz with a few harmonics. Guess it was bad. On the plus side, I now have a new doorstop!