Well, I pulled the tubes and vacuumed out the 1/2 inch (WTF?) of dust that was in the bottom of the amp and found the reverb bag and a little eight legged resident, I cleaned out 8 yrs of cobwebs from around the transformers, I know its gotta be around 8 cuz the chassis has 2/97 inked on it and the amp shows almost no signs of use, only a couple of scuffs on the metal corners. The black tolex cleaned up like new. I don't think that the chassis had ever been removed (before today) and it has- not 2, or 4, but 8 bolts holding it in. She's a brick house, baby. The only disappointment was seeing all the jacks, pots and tube sockets are pcb mounted, but the pcb is rock solid in there and all the pots were right out in the open, easy to spray out with a little contact cleaner. It didn't need it but I was already in there, so why not? All in all, I think Rivera may be to the amp world what Hamer is to guitars- professional quality gear and hardly anyone knows it.
I think that I may need an attenuator though, like most tube amps it sounds better and better as you turn it up. Last night I had it crankin' with the master at about 6 or 7, the gain dimed (of course) on the brit channel and my wife was at the top of the stairs SCREAMING ( I didn't notice for a while , she wouldn't come downstairs with it so loud) yes, screaming at me to turn it down because all the pictures were vibrating off of the walls, the baby was having a fit, and /emoticons/default_blink.png "GODDAMN IT- WHAT HAS GOTTEN IN TO YOU!!!????" HAHAHHAHAHHAAAAAAA!!!! My ears are still ringing....and she's still pissed off....but it is SO worth it