ToTo Man
500+ Head-Fier
I dont fully like the dt770 and i hated the akg k550 because i thought they were pretty treble happy.... but none of them (or any other headphone) ever rapped my ears like the hd600's do at times. As i said its really a first for me....
Despite having the same issue.... when this peak was not present, you liked the hd600's David? More than the hd650s?
As an experiment, have you tried using EQ to reduce the 3kHz - 5kHz peak of the HD600 to determine if it is in fact this peak that is bothering you so much or if it might be another aspect of the HD600 sound? I say "3kHz - 5kHz" because some people think the HD600 has a peak between 3kHz - 4kHz while others think it has a peak between 4kHz - 5kHz, so best cover both ranges to be sure!