Expert Pro sound quality

[moreno1973]

That still seems to me to be a black and white statement with little evidence to justify it, if you don't mind me saying so.  Of course there are DAC chips that have better on-paper specifications than those in the Expert series.  But I can imagine there could be many detailed improvements to the implementation even based on the same DAC (chip) that would result in better sound quality.  Why do you rule out that possibility?

Because even the maker of the existing dac chip has acknowledged that what Devialet has done with their chip is the best they have seen and cannot go any further .

From Where You have this info? Please quote Your source.