I followed the advice of an audio buddy on AudioKarma.org, and got an SMSL C-100 (basically the SU-1 w/remote). I had a MUSES02 opamp installed in place of the OPA-1612, and added a linear regulated power supply. It has vastly improved separation and depth, and loses the digital glare. Cost was < $250 all in.
Chinese DAC's
I have been looking at several DAC's trying to decide which one to put in my system. Some of those DAC's I'm looking at are built and designed in China. Without getting political I don't think trade with China will ever be the same. I hope that these engineers are able to get there products to market. It would sure be a waste of talent.