I am currently using a Mirage USB and it sounds great into my LAB 12 DAC. I also have a D750 coax by DH Labs and it also is a good cable. Commits no sins. Excellent quality.
I am not convinced that USB is better with MY DAC because I think using the Coax exploits the Aurender's clock and may be better than the clock in the DAC.
I just moved things around and started using my main listening room again.
I bought a new integrated amp in August and was using it in my main room for about 3 weeks. It's internal DAC sounded excellent with the N200 as It's source. I mean really good. If I had the cash I would put a N150 in my second system.
When you pick it up and see the build quality , and hear it , you will know why people like ghdprentice, lalitk, and myself praise Aurender like we do. Support is excellent too. Honestly support is the most important criteria when I buy something like a streamer.