For me the LCD-X is far away from beeing neutral. Bass impact is to much and drowns the mids and treble.
Maybe the sound signature changed after burn in (40h of continious use). I don't listen to it in the last 1,5 days but today in the evening I will.
Hopefully the the signature changed more into neutral than into warm.
this is the only reason i'm interested in the X, is the strong bass vs. the LCD-3. though my new pair of LCD-3 seems to do a little better.
would be nice to hear if the strong bass remains, or if it subsides over time like with most other headphones.