I’ll put my cents in here. I had one couple but returned both because of qc issues but that’s besides the point. Powering them off a fiio e10k was not enough (bass started to distort at higher volumes) and my smsl c200 made them sound much better imo. However I did really like to eq them. Try out the oritory1990 preset eq I think is what it’s called or just add a bass shelf but I think the preset is really good. Trust me, these headphones can literally please anyone if EQ’d