I kept an eye on both pairs but decided that I have enough iron on the shelves. The toroids were tempting though.
30W 350mA DC, 4*PL84 is almost a bit shy for those transformers. Wiring the output tubes as triodes would be a bit wasteful for such nice transformers, I bet you can get around 20W if you run them as pentodes. A healthy dose of local feedback (Schade or output plate to driver cathode) would trick the tubes into behaving as triodes but with pentode efficiency.
Less hassle with the Miller C too, a single high gm pentode (6E5P or similar) operating with a decent plate current could probably drive the whole thing just fine.
30W 350mA DC, 4*PL84 is almost a bit shy for those transformers. Wiring the output tubes as triodes would be a bit wasteful for such nice transformers, I bet you can get around 20W if you run them as pentodes. A healthy dose of local feedback (Schade or output plate to driver cathode) would trick the tubes into behaving as triodes but with pentode efficiency.
Less hassle with the Miller C too, a single high gm pentode (6E5P or similar) operating with a decent plate current could probably drive the whole thing just fine.
