Looking for DAC suggestions


I am looking for a good DAC for my boyfriend. He has a Mcintosh 275 amp and he is now looking to buy a DAC( the one he was looking into was Anedio D2, which is currently out of stock). I want to buy him a DAC under $2000 for his birthday and I dont have any idea about DAC's and which one is good. Can someone suggest a good DAC which will work well with his Mcintosh 275 amp.
sue13
Whole heartedly agree with both Phaelon and B_limo. You can't go wrong with a card, and you almost can't go right buying him a DAC for reasons stated above. You Da Bomb.
Thank you soo much for your suggestions. I decided to go with the card approach - I think it will work out best that way since he is pretty picky about his music setup. I want to thank you all for all the inputs - I have learnt quite a bit about DACs in this process :-)
Phaelon got it spot on. If someone bought me a DAC, I would actually be pissed. Your heart is in the right place, but I STRONGLY advise against this.