They're actually sexy in the physical.
Copy paste of my impressions follows.
Well. I guess I'll just toss my own point of view into this.
I don't feel like doing a review so here are my impressions.
i apologize in advance for the more than multiple incorrect punctuation.
d600 impression vs d2k.
1. subbass is there but not as prominent. if you push the headphones closer to your ears though, it helps.
which leads to the first drawback for the d600s. it fits loosely. helps with comfort, but takes away from sound.
when i say sound, i specifically only mean subbass. the rest of the spectrum seems unaffected by pushing the headphones closer.
2. definitely has a better midbass vs d2ks. every kick is heard on it whereas with d2ks, that "oomph" from a kick is clearly underneath the subbass. again, pushing the headphones closer to your ears brings the midbass and subbass closer to the same level (with midbass still higher than subbass though).
3. d600s are faster than d2ks when it comes to bass. I'm not audiophilic enough to tell the difference in speed for mids and highs, but bass speed is definitely faster on d600s. meaning it has a shorter decay time and it's tighter.
4. treble. man. treble. i remember when I first got my d2ks (before burn in and daily use) I thought "what are all theses s's doing in my songs?". with the d600s i thought: i hear there should be s's here but they're not (or barely present)".
my point is this. the level of treble on the d600s is lower than on the d2ks. which makes it seem like there's less detail.
my point is also that sibilance is less on the d600s.
so the past 4 conclusions were based on random dubstep tracks I rarely listen to even though I have them in my library.
I then moved to a song I know and like (James Blake - Limit to Your Love). The difference between the d2ks and d600s become more apparent but they are the same conclusions as before. except this one.
1. mids are more recessed on the d600s than the d2ks.
to confirm this conclusion, I popped in Adele's 21 album and Lauryn Hill's MTV Unplugged 2.0 recording (specifically O Jerusalem and Adam lives in theory).
and the conclusion?
once again, the subbbass is more prominent on the d2ks. but back to mids.
d600 mids are definitely more recessed than d2ks.
however. somehow the vocals sound more intimate. so if the only thing you really listen for in mids is vocals, d600s are oh so slightly better than d2ks. but if you listen to more, again, the mids are more recessed on d600s.
oh and. I know you should know that the mids SHOULD sound colored because these ARE NOT neutral phones, but the d600s mids sound more colored.
At this point, I don't plan on keeping these.
i was hoping the d600s would be a more portable d2k with better isolation and mids.
Yes I believe in burn in but I also believe burn in doesn't change the sound much more than the initial.
Despite the much greater portability due to the removable cables, better isolation, slightly more "ruggedness", and sexy look (YES, they are sexier than pictures make them seem) I can't justify spending that much on them when I got my d2k's for much much less.
And then it hit me. I know these are colored but, wonder what they sound like with jazz. So I did just that. Played jazz through both the d2ks and d600s.
CLEARLY, the mids and treble are more apparent on the d2ks. saxophones and trumpets sound much more beautiful and closer to realism. The sparkle on the d2ks is also clearly superior. It reflects my earlier comment that the d600s mids sound more colored.
Lastly, It takes too much intimate listening to comment on soundstage and detail and I don't feel like putting in the time for that. The first thing I look for in headphones is the overall frequency response.
small edit. the soundstage on the d2ks are both wider and deeper.
P.S. Just out of curiosity, I played the same songs I heard but this time had my little 13 year old sister listen to them.
The thing she immediately said was that "in all the songs, the part that's not bass sounds louder on these" with "these" referring to d2ks.
Well, it's been fun. I'll come back and make this a little neater later but I've got work to do for now.