My soundcard has given up the ghost so I'm looking for a replacement. I have ripped my cds to an external hard drive in wav format so obviously I want to be able to play the wavs and get the music from the hard drive into my amp. I am aware that most soundcards do not offer the best in audio quality as the interference that is present in the average pc can cause problems. Perhaps an external DAC is what I need. Ideally if the dac could connect to a usb port on the computer that would be great. Any recommendations