I recently bought a pair of DT990s (600ohm) and I've been noticing that they hurt my ears even after just a few minutes of listening. This isn't a comfort issue - rather, I think it's something to do with the headphone's infamous high end/treble spike.
I'm using a Asus Essence ST card to power the 600ohm version. I've messed with the EQ and it's better after lowering the higher ranges a bit, but I still get sudden onsets of serious aching during listening. I'm not even sure if it is the treble that is messing with me, or if there is some other issue going unheard here.
Which brings me to my question. Is it possible to overpower your headphones? This might sound dumb, but I think I may have gotten a 32 or 250 ohm version pair disguised in the box of a 600ohm box - maybe that could explain things? I have them set to be powered at 600ohms.
I've never had problems with headphones or my ears before. I'm 20 years old. I listen to music at moderate to low volumes. I remember going to see Pacific Rim at some theater with my family and experiencing serious pain in my ear because the theater's volume/treble was so high, but my family didn't seem to notice, nor did anyone else. Perhaps I just have really sensitive ears?
Anyway, I would appreciate some advice. Can't return them, but I might be able to RMA them somehow if all else fails.