My '71 100 watt Super Tremolo with the KS is the best amp I have ever used for rock or metal in my 25 career. Take his advice get an old one or a Marsha, you won't be disappointed. This coming from a guy who's not only a tone junky but make my living playing guitar on records. I got a good deal on my '71 a few years ago, I think $1700, in excellent condition and then let Dave do it up.