So I've been looking for a nice DAC/AMP, and these seem to be the best options under 500$. I'm currently using the R70X and decided to buy a new one with better imaging and overall. Maybe I might get a used Hd800s... Can I get some advice choosing between them?(It seems that all 4 can drive up to 600ohms, so what I'm worried about is the sound quality.) Thanks!
