Paul McGowan stated he was shocked that changing out the stock PC in the P20 regenerators made a clearly audible difference in their Music Room 2 system.
I thought it was a pretty brave thing to say...when you consider the P20 is supposed to make completely "new" power. I wrote to him and said he should daisy-chain several P20s as an experiment. No clue whether they tried it or not.
So, I say go for it.
Regards, barts