"Sometimes you get what you pay for and personally I avoid power amps with lots of output tubes for just that reason. Also why I got away from 300B amps the retubing costs."
@jond while I sometimes miss and look back to my former amps, your note is a good reminder to myself for similar reasons. I moved from large stereo amps to smaller individual mono amps with larger transformers, larger-fewer output tubes. Tradeoffs come with it too.