Please do tell more. How is it vs your Bricasti M1. I might have the possibility to hear the TotalDAC soon.

A head-fier is selling his TotalDac d1-dual for a pretty good price and so I am evaluating it.  I am also evaluating an Aurender N10 against my Aries.  While my bias is to like what I have better, I have to say that both items that aren't mine kick butt over what I have, and not by a small margin.  This is the best DAC I have ever heard on a headphone and without question I can consistently pick it out in a blind test (in fact, I have done just this against my Bricasti 5/5 times with 5 different tracks).  In this scenario, R2R clearly beats delta sigma.  Uggh.