As far as I know, the Expert Pro series uses a PCM1792 DAC which I think is the same as the original Expert. There were changes in the ADH implementation - there's a thread somewhere on the forum dissecting the patent that describes the changes, which were largely to do with the switching frequency at which the Class D amplifier runs. Maybe that's what you had in mind?
I am not sure why you would avoid upgrading depending on whether or not the DAC (chip) was changed. Surely it's the performance and sound quality of the amp as a whole that matters, and that depends on much more than the choice of DAC chip.
I am not sure why you would avoid upgrading depending on whether or not the DAC (chip) was changed. Surely it's the performance and sound quality of the amp as a whole that matters, and that depends on much more than the choice of DAC chip.
Roon (Mac Mini), Wilson Benesch Full Circle, Expert 1000 Pro CI, Kaiser Chiara
Warwickshire, UK
