Audio Research has a new DAC out, their DAC7 will connect via USB to Mac or PC.
http://www.audioresearch.com/DAC7.html
Ultimately you do want a good DAC to listen to audio. I do not know what this Audio Research DAC is priced, but I'm sure it sounds good.
http://www.audioresearch.com/DAC7.html
Ultimately you do want a good DAC to listen to audio. I do not know what this Audio Research DAC is priced, but I'm sure it sounds good.