The group on Yahoo is very helpful. These can be good amps to use and yes the GTA name did have a bad rep for holding up. I had a SEP-1 which worked great and I picked it up on the cheap. Matches well with the tube amps, and a very simple design.
Unless they are asking a lot of the amp it could be a fun little project to work on it if you don't mind doing that, yet if its going to be too much trouble I'm sure you could find a buyer for it if it didn't fit your needs.
Unless they are asking a lot of the amp it could be a fun little project to work on it if you don't mind doing that, yet if its going to be too much trouble I'm sure you could find a buyer for it if it didn't fit your needs.