I just picked up a Mark 3 with a 1x15 cab (free from a friend, thanks buddy!), but it's different than most that I see out there. I haven't been able to find out much about it. I didn't have very high hopes for it. Peavy has never been high on my list for killer tone. After 1 day of playing around with it, I'm actually kinda happy with it. Don't know that it'll stay my main player, but until I can afford something else it'll work. Anyone know more about these guys? What I can tell so far is that it's a solid state head with two 150W outputs @ 4 Ohms, wired in parallel (for a total of 300 watts). I opened it up last night to clean the pots and sliders and there is tons of unused space inside that big ole box! What a simple and straightforward amp. A couple of circuit boards, with not much clutter, and one heavy a$$ transformer. I can't find any online manuals, not sure of the year, would love to know the details about all the knobs and such.