I've tried both optical and interconnect, and for me the analog has a more natural sound. My assumption was that the Auris wouldn't have the DAC in the path of the analog being an inexpensive device - but I have no idea. In fact the WADIA DOES convert analog to digital but does an amazing job of keeping the analog very analog sounding.
But unlike with other sources the analog sounds tilted up in the high's and I assumed that was the blue-tooth since that's what it's know for, but maybe the lack of impedance also has something to do with it.
The optical sounds a bit warmer and actually more detailed, but the analog sounds a bit airier and more natural. So it seemed like the interconnects could be the problem. The Museaus's were shrill and unfocused, and I've replaced them with AQ Cinnamons which are better but could still use some weight and warmth.
Thanks for your in-depth look at my setup!