Let me preface my review by saying that it’s not in my nature to write about my own head-fi gear. As the actual owner, having invested a significant amount of money in it, I am inherently biased about its performance, no matter how much I try to be objective. However, as there is little feedback on this particular piece of equipment, I figured I’d make an exception for the Totaldac D1-Dual.   It is a non-oversampling (NOS), 2-channel digital-to analog converter (DAC), developed by Vincent Brient, founder of the French-based company Totaldac. It has...