I used this out of a USB Pico DAC -> Dynalo (Sheer Audio HA-006+) -> K702 using well ripped FLAC files   I really thought this was going to be better, but I really just do not like these headphones much at all. Probably my biggest complaint is the airyness and tone of the vocals. I also have a pair of Grado HF2 and the HF2 just absolutely completely super duper destroys the K702 in tonality, especially the vocals.   It's also very fatiguing for my ears for some reason, even at quiet-medium listening levels. I've read this is because it has a high...