I bought this amp off a friend 6 or 7 years ago and kinda forgot about it. It's a Guyatone Reverb Jazz GA-1050 212 Japanese origin. Cosmeticaly it looks like a SF Fender twin and came with two alnico speakers of undetermined origin. Tube wise it had a selection of ax7's and an at7, and two 6L6GC's labeled Toshiba Japan, Tokyo Shibaura electric. These are likely the original power tubes. It never really worked that well and I had other amps at the time so it went into a storage room. I was reading a thread about Sf fenders and thought I'd pull it out and see if any members knew anything about the amp. My camera died before I could take any gut shots but here's a front and back. If I did post a few gut shots maybe a member could help me determine the type of circuit?