I got one about a month ago and have run it pretty hard at band practice. It gets almost too hot to touch. It was making a high pitch whistling noise with my 100w Marshall at a gig, so I just deleted it from the chain. But it was fine with a 50w for my next gig. Still not sure this is gonna replace my Marshall Power Brake. My tech says it's made to take the heat, but I just can't believe it's normal for anything to get that hot that's supposed to be handled.