SR385,
Put the thing on 220/240 volts, it does very well. Won't get any more out of it, just makes it easier on the house wiring (if yours is like my house wiring), and operates more efficiently, sort of. The plate voltage really gets 'stiffer'.
If the objective is as much power as legally possible with the least worries, the AL-1200 is really about as good as it gets. That 3CX1200 is a very 'easy going' tube, not as 'touchy' as the 3CX1500 is (grid dissipation).
Ten-Tec makes some nice amplifiers. Nothing particularly outstanding about them (or a lot of the other manufacturers for that matter), and one or two are very nice looking too. Prettier than an old HeathKit or Ameritron or whatever. But that's cosmetics, not anything to do with what it can/will do electrically.
What would I really like to see in a new amplifier? How about just pushing a 'disassembly' button and it just un-folds so you don't have to take half of the @#$ thing apart to reach that one itty-bitty stinking cap to replace it?? I'm holding my breath in anticipation!
- 'Doc