I have been chatting a bit about PSUs and dacs in the phonitor roll call thread. I read a long review of the antelope zodiac gold on 6 moons
last week and my curiosity was raised as to the exact method an external PSU delivers improved sonics to the listener.
My guess has been that it stores energy up and buffers it for efficient and powerful delivery to the DAC, so that when fluctuations happen in the
grid it doesnt affect DAC performance?
I have MDAC myself and there is talk of a new PSU coming out.