Audiozen, I believe that someone is selling you a line of bull on the feed forward versus feedback argument. You can always achieve lower levels of measured performance with feedback loops. In critical control applications such as reactor design no one uses feed forward without having a feedback loop. With respect to amplifier design it's my understanding that you can get excellent measured performance with feedback designs. However, designs which use too much feedback don't sound as well subjectively.
You are naive if you believe Nelson Pass is unaware of these trade-offs.
You are naive if you believe Nelson Pass is unaware of these trade-offs.