In my opinion, this is the best computer audio interface I've heard by far (and I've tried many well-regarded USB interfaces - wavelink, halide, etc.) and it's fantastic. Was incredibly impressed by what it did to the sound of my Bel Canto DAC3.5 - everything became much more coherent and soundstage improved tremendously. Only selling because I was so impressed that I upgraded to a Weiss dac. I bought this a few months ago from an authorized dealer (have all paperwork) and have not used since March (after only using it for 50 hours or so).
For those interested, I would throw in the Cardas AES/EBU 0.5 meter cable (I have original box, etc.) for an extra $100.
Thanks and let me know if you have questions.