No issues, everything works perfectly. It is black.
Selling because I have too many DACs, got this one to audition the AKM 4499, as it was the easiest way to do so. In my system i actually prefer my DIY ESS 9038 based DAC, but it is not a fair fight at all. If my DIY DAC was a commercial product it would need to retail for close to $10K, with its highly sophisticated power supplies.
The D-90 is incredibly good for the money, but one can do a bit better for much, much more.