Caution: Anything I say in this review is what I think of the DAC and according to my taste as a audiophile, you should always be aware there's a degree of YMMV in any review. Also, I did most of this review using speakers but I will comment on how it sounds with the Beyer DT880 600 ohm edition.   Introduction: I've experienced and purchased many pieces of equipment in my short audiophile career (less than a year) but I've never been so impressed by one that I felt like I need share my opinion with other people. I bought this DAC used from a user...