NOW, the bad news. I won't be picking them up until around end of the year!!!! So I have plenty of time to figure out what to do.
They are supposed to be early-mid 60's that the original owner gave to him a few years back. One channel was going in and out. So I have some work to do. Considering the age, no matter when it was actually assembled & working, it's probably due for a complete recap/resistors. Obviously the selenium rectifier needs to go if it's still there. I'm thinking the VTA board is probably a good idea. I also like the idea of the attenuator to use the amp direct, so I'm thinking AT7's instead of AU7's. Of course, I have a bunch of good used AU7's lying around.....Though I do have one Bugle Boy AT7!!!! NOS!
I have one other tube amp, a Bogen AP35 Integrated that I rebuilt a few years back. It sounds pretty darn good, so I'm thinking the ST70 should be great!
Anyway, I've read a bunch of posts about various topics, and it's simply amazing how much info is available for this amp. It will be a nice change from the Bogen (which I rebuilt without a schematic which I since have gotten) which no one I found on the internet had rebuilt one!
One thing is that the "upgrade" binding posts that many offer (which I like) only have posts for one tap. I'd like to have 4 and 8 ohm taps (I see no need for 16 ohm taps). So if anyone has some pics of a nice setup here, please share them.
So if anyone wants to chime in.....I'll be weighing options til January! I want to rebuild this amp for the next 30 years!!!!