I don't have an answer to OP's question, but going from there, I love my Denon AVR-3805 and it looks like it has some of the better DACs available out there (16x Burr Brown 1791). I'm guessing that I wouldn't really benefit from having a stand-alone DAC between my Denon and anything else, right?
Yes, I know, my ears are the best test; I just wouldn't want to spend money for zero benefit.