I went to a garage sale this weekend and grabbed two old amps for $20. A big Sunn, and a little Marlboro. The guy just said they were power amps and wanted to get rid of them. I don't really have room to accommodate two more amps, but hey, only $20! The faceplate on the Sunn is all black and unmarked, and I don't know a ton about the gear they put out other than old sunn stuff is super cool to some people. Once I got it home, I compared some pics online, and the layout looks like an early Coliseum Bass amp. The all black faceplate is weird. Doesn't seem like the kind of thing someone would replace, but it also doesn't seem like something that would be made that way. The knobs look like they might not be original, but also look like they haven't be touched in a loooong time. The serial number(?) stamped on the back is 000607. I opened it up and found a "TESTED 6/22/71" sticker. The Marlboro is real simple, the only control is a volume knob on the back. I opened it up to see if I could figure out some more details about it. There's not a whole lot going on, but it looks like the one pot is a CTS from 1975. The chassis kinda fell apart when I opened it up, so I might try and rehouse this guy. I've read that marlboros aren't anything to write home about, but it might be a cool project.