I owned the DAC 8 for six months. Used it with a Wyred4Sound upsampler. I also got a chance to look at the output on an oscilloscope. That DAC had some visible noise issues which at least one reviewer commented about.
The DAC 8 is only good with high resolution files. Something more modern will work a lot better with Redbook. I switched to a Mytek Brooklyn and was a lot happier overall.
Get something newer.