This is kind of a late add on but it seems that it would be 10x easier and 10x less confusing with zero math if someone posted a chart of rail/output stage voltage for each amp and you just tuned the gain with a DMM to reach this voltage with a 60 hz 0db wav file with your volume set at 3/4. If you ...
I would love to find a primer on amplifier design/topology that explains things so I can better understand stuff like this. I understand basic electronics and physics understanding so it need not be too Mickey Mouse. Any suggestions?