I'm going to look at an Ampeg B2R head later this evening. It's been sitting in its original box for 2 years and has never been cranked on. Difficult to believe? Maybe, but possible. Going for $300. I'd be doing a mild upgrade from my old GK 200RCB, which is a 100w head, which goes into a JBL ~220w 4ohm 15" + tweeter. I also have a GK 200MB, which works well as a monitor if I use the effects out on the amp to effects in on the combo. My initial idea was to wait for a deal on a 400RB or wait for an 800RB. This will be used in practice rooms and small venues. I'm doing this because of the clipping on the 200RCB and just a bit more power. Good deal? Thoughts?