Pros: Good value, compact, excellent sound quality, RCA out, headphone amp, USB powered
Cons: No on/off switch
Initially when I purchased this item, I was not very happy with it as I could not hear much difference between it and my Xonar DX, however as I tested it over a couple of days I really noticed a difference. Especially with the difference in sound-stage. The Audinst has a bigger sound stage than the Xonar, and overall a crisper sound, which can really be appreciated when playing music at a high volume (both in headphones and speakers).
I would definitely recommend this DAC for anyone wanting a good quality, audiophile grade sound card or DAC on a budget.