I am also thinking of adding a DAC to my system, happens MF Trivista 21 and Odeon-Ag (w/ recocker upgrade) are on my short list. I am using Opera (Chinese Brand) Consurance reference 2.3 CD player, McIntosh MA6900 integrated Amp, driving B&W N803. Obviously, my source is the weakness link in the system. Not yet starting to invest on cables, still breaking in the system with some old cables from friends, that will be my next steps when I get the source fixed.
Actually, the Opera CD player is not bad at the price of less than USD800. By the way, I live Beijing, China, brought this player in Beijing from the local manufacturer. It cost more outside of China. Its mid range (vocal) is more than acceptable, in fact, it is very close to an AA transport/DAC combo which is 8 times more expensive, just did an AB test last week. However, the high and low range are not as good, feel like the high are cutting off.
Consider both B&W and McIntosh's charactoristics, if I want to improve the high and the low with more details and wider/deeper sound stage. Should I consider Odeon-Ag over MF? I am assuming the MF tube DAC is also warm and smooth, and the Odeon-Ag is more crisp and detail, but I have not got a chance to listen to either one of them myself.