I have the DT880 600ohm and while I like them, they have a huge flaw. They have a huge treble peak at 10khz that makes them painful to listen to for long periods. They're only good if you have a convenient way to EQ out the 10khz peak, ideally with a parametric equalizer.
UzuzuMaybe your ears are different but they definitely hurt mine. My stock ear-pads were also a bit compressed, which might have made it worse. I just recently switched to brand new sheepskin earpads which were much deeper and seals better. Now they sound a lot darker and the brightness issue is gone. They sound perfect now.
JustawayI've tried them with sealed pads........ the midbass gets disgustingly strong.
I agree the stock pads can be a bit shallow especially for us fellows with pop-out ears.
JustawayI also find them painful, although as far as I know, it depends on one's ears. Plenty of people don't seem to have a problem. For me, it is, or at least I think it is. I even went to an audiologist to find out if I had a problem, and she said none as far as any of her tests could show. Just a "sensitivity."
UzuzuI enjoy treble so I might be biased but I don't suffer any fatigue from the 880 600ohm. It's a great headphone to pair with the 6xx or 58x. 880 works really well with fast music where you don't need huge bass and classical.