Here is a little giant killer for ya'll to chew on.
Get one of these little Ele dacs. Even if you own more complete DAC set ups. Cus this thing is for real @ $17. Absolutely stunning coming from a cheapo made in china dac. Will surprise anyone that trys one out. Using a Burr Brown PCM2704. As gadgety as this looks it is legit. I have 3 other dac amp sets and this little dac is comparable to much more expensive dacs in sound quality. And sounds way better than onboard poo you get on computers. . $17-$19 on ebay.
Mac compatible? I'm assuming no.