Dt990 250 vs 600

[gulice]

I am a new member here and am curious as to what benefits the 600 ohm verision will grant over the 250.

 

[plainsong]

http://www.head-fi.org/forums/showpo...&postcount=227

There's more if you search, but that's just a post I made about that same subject the other night. Personally I think they're a more refined dt990.

 

[AudioCats]

are they using the same 600 ohm drivers in both pre-05'/600 and post-05'/600 models?