Sweet!
Sir, I applaud your efforts!
I have been watching the various threads on this matter with interest.
From a personal perspective, I've been interested in a High End SS amp, having seen what various people have done with the B22, naamf amongst others.
Given the likely cost of such an endeavor , the incremental delta for adding decent control, monitoring and display over and above the power supply, amplification and casework seems worthwhile. (If I'm spending this much on amp, it should do double duty as a speaker amp, and thus have a remote control of some sort!, etc)
Given the block diagram, how much of it is tied to the use of DynaFet gain stages, e.g could you substitute B22 boards?
I think there is a lot of mileage in this approach, and look forward to your progress with interest.
(Disclosure: As a Transporter owner, I'm very interested in the direct external control - you could imagine the duet/controller controlling the amp functions -etc)