I'll try to contact the owner, it does seems like a steal. The first chann distortion doesn't seem to work, but I use a **** load of pedals and I don't use amp overdrives anyway.
Oh and I'd add my bass player has a Sunn Coliseum and it will knock the fillings out of your teeth set on 2 and has awesome big, clean, deep tone. I think Sunn are the top of the heap of vintage solid state amps.
Finding a good tech who knows solid state is not easy though.