A little status update: I think about 1/2 the proto builds are at or near completion. And those w/completed/debugged builds like what they hear.
There have been a couple BoM tweaks that impacted the first of the 2nd wave of builds and that coupled with the occasional build error have been/are being resolved in the proto builds.
A 1% error rate on this project translates to a couple misplaced components, but builders (w/runeight's help) have thus far been able to resolve things. The features, flexibility & performance characteristics of this amp do not come for free parts-count wise. But payoffs and benefits in terms of performance, size, tube rolling, etc are being realized.
I believe the plan is to try to clear the current (careful
near-term proto builds first and hear the feedback.
BTW I'm not the only one enjoying tube rolling in this & my latest acquisition is an early 60's Siemens "chrome plate" 12au7... Know the shiny plates are more of a gimmick, but finding the rest of the tube shines as well in this amp. It will be staying in for a while. Found this helpful read
WRT tube types.