How does it look? I have the Z565's, PA774, and the tubes. I'm also considering using a single 6EM7 per channel, the high gain half direct-coupled to a concertina formed by the low gain/low Ra half, Williamson style.
I've got 8 Russian 6F6G types on hand, but am prepared to try new production 6V6's as well..
It's been suggested that I incorporate some 6SN7's as CF's direct coupled to the 6F6's, as the 6SL7's are a bit wimpy in the current department. I'm exploring that option at the moment as well.