Sounds like a treble issue and the DT770 pro are known for having elevated treble. I would EQ everything above 4-5k Hz down by 5-10db (depending on preference). You can also look into using AutoEQ or generating an EQ profile with one of the online frequency response databases if you want something more precise.
down_the_liffey t1_isll351 wrote
Reply to Any tips on how to make listening on closed-back headphones for a long time more bearable? by Maju76
Sounds like a treble issue and the DT770 pro are known for having elevated treble. I would EQ everything above 4-5k Hz down by 5-10db (depending on preference). You can also look into using AutoEQ or generating an EQ profile with one of the online frequency response databases if you want something more precise.