Good news: Peavey Booster passes signal. Tested it out the other day, didn't even need a fuzz pedal, just used the EB-3 and cranked the volume. Dunno if the VU meter works though, it could be in the input was just too low to get it to move. Dunno what the price would be as is, I've seen ones in eh condition in completed listings at the upper $200 range, but I have no experience with Peavey gear.
Not so good news: looks like I have some microphonic tubes in the 1200s. Can hear pins when I flick the knobs. Did a quick pencil tap test, looks like it might be the power valves. Great. However, since it's still functional and not yet squealing, I think I'm going to get tubes for the older 2000s first. I might also pickup a weber Bias-Rite so I can just do it myself. I'm debating between the Tung-Sol 6550s (which I know and like) or some Valve Art KT88s. Or maybe even these tubes called Psvane. It looks like they're an offshoot of Shuguang, which I've heard good things about, and after ready the audiophile reviews of the Psvane, it seems they're pretty well liked. Dunno though, I'm just looking for later breakup. Any thoughts on valves or biasing amps from you guys?