I'v been after one of these for awhile now, Carvin X-60A tube amp. It is supposed to be the same as the X-100b but no EQ, still has active tone controls, spring reverb and this one uses 6L6GC's and a EV12 300w speaker. It's in excellent shape, 1988, the Groove Tubes are gone and someone put in JJ's. Even the FS in very clean so I'm hoping the gut's are in the same shape, I'll know tonight. I always wanted the 30w "A" model, but this popped up and was too good to pass on. Back in the 80's / 90's they made these without the EQ and sold them as studio amp's with 2-12" cab's or in a combo like this. My guess is it's a very good pedal amp and can play clean very loud. I don't know if this one has the "hot rod" circuit or not, it does have the hi-lead and hi-lo input's, but some have a factory hot rod mod that really cook's. (My other combo has it) I'll let you know what I find.