I've had mine since March. I ordered from Musician's Friend. I gigged with it, literally, a couple of hours after taking it out of the box. I got through about half a set and it went down, much like what happened to pedro. Mine was an output tube. Got it fixed and everything's going great!
It's been very reliable since then, playing pretty much every weekend, 4 hours a night. I keep my settings, which i like very much, like this-
input volume about 9 o'clock
bass about 3 o'clock
mid about 3 o'clock
mid switch @ 200 hz
highs to taste
output volume around 2 or 3 o'clock
resonance and presence around noon.
It's pretty much the bomb. I have said "I'm never getting rid of this" about several pieces of gear over the years (SVT's -vintage and modern, V4B's - three of 'em, Mesa Buster 200 - what a hunk of crap that was, etc.) and I think I can honestly say that about this amp.
It has a great breakup and sounds great in a classic rock/country/blues setting. I don't play metal, and I don't slap, so I can't really say anything in that regard.
Pedro. Go get another one, dude! Warranty, Brother!!! Can't say enough good about it. Everyone run out and buy one!