Just to fill in a couple pieces of info. from the Kana's post above, the EVS DAC II does not use op amps(Ric doesn't much like them so designed the DAC to not use them--I believe it uses a FET output stage). Also, although I'm sure the CAL DAC is a very good piece you may want to consider that CAL is all but out of business at this point and its future is at best unclear. FYI...
Tim
Tim