bigred222,
Just out of curiosity, what's the price on that amplifier?
Relying on my memory, something that's not exactly a real smart thing to do, that tube seems to be similar to a 3cx1200, sort of. If that's true, then the claims for it are 'slightly' exaggerated (at least 2X). Keeping that "if" in mind, it's probably not a particularly 'bad' amplifier, shouldn't be any 'dirtier' than a solid state amplifier (they're all "garbage in, garbage out" sort of thingys). Can't really say without knowing about the rest of the circuit, not just the tube.
And just as a sort of "it sure reminds me of a..." sort of thing, it sure reminds me of an 'Ameritron' AL-1200. It also brings to mind that George Jone's song, "She reminds me of the one I used to love", with the same 'catch', sort of.
All things considered, -I- would wait a while to see if they are any 'good'. But that's just 'me'. The parts of the deal that would make me 'wait' is the availability of the tube. From what little I know about 'Svetlana' and a 'GI-46b', it may not be around very long. That's a huge guess, so don't put much value in it.
- 'Doc