I have one and am very happy with the performance. The sound can be slightly on the brighter side with the original opamps but this can be easily changed with opamp rolling if you do not like it. This imho is a very big advantage with it. I made a very expensive upgrade last month by changing all the opamps to legendary OPA627 and now am not able to put the smile away from my face

. BTW, there is a new DAC (STU i think) which is cheaper but with fewer features. You can compare the two and see if STU suits your requirements. All in all, it performs extremely well for the money you pay for it.