silversurfer616
1000+ Head-Fier
Had various OTL amps and also the HD600 and 660S at one time but once you are used to better resolution/clarity it’s hard to go back to the HD650.Try an OTL amps before you give up, or try the 600.
Atm have the HEKse, HD800S and Focal ClearMG and the HD650 just can’t compete. Have sold the HD650 in the meantime.