Quote:
Originally Posted by
koisounds 
I've owned my DT990s for a couple days now and love the sound overall. I've been reading a lot about how the 600 ohm version sounds incredible when amped. My 250 ohm has ample volume coming out of my interface, so I'm wondering if getting an amp would benefit the sound, or just make them louder. My goal would be to warm up the mids while still keeping the highs intact as i use them for mixing.
Thanks!
Amps are used more than just for power. Depending on what you get, it can be warmed up. By highs intact, do you mean still detailed?
But yes, phones can be brought to their best w/ an amp. The impedance for w/e you plug it into can affect the sound. Maybe the bellari ha540 (possible w/ a different tube, b/c tubes also can change the sound), but when I saw mixing, maybe not.
http://www.head-fi.org/t/513393/guide-sonic-differences-between-dt770-dt990-models-more
scroll down until you see the amping section- should be his 3rd post.