IMHO it is best to start with the notion that the HD-700 is in fact a flawed headphone. The treble response is not neutral and that means that different music and head/driver angle/fit issues have the potential to mitigate or exacerbate the issue. So those of you who do not care for the HD-700 certainly have reasonable and well corroborated evidence to support your lack of enthusiasm for this headphone.
For those of us who love it, it seems clear as to why and we seem to be very much in agreement generally speaking. The flawed treble can add a nice sense of energy and excitement to music, and can also help bring out the details. My own theory is that in the frequency spectrum that best supports phase coherence, spatial imaging, vocal realism, percussive snap and rhythm, bass and guitar strings, etc.. the HD-700 is technically excellent, and I think that range happens to be 40 Hz to 3 kHz.
If I had the option to alter the HD-700 to be perfectly neutral, I would pass, because I happen to like the "personality" of these headphones. Just like a friend you like to hang out with, every once in a while they are a bit much and you want them to settle down a bit, but for the most part, and for the vast majority of time, you are glad to have such a fun friend to hang out with. Now, if I could just knock 2 dB off the two peaks in the treble range, and boost the slightly more broader dip by the same amount... I would be very tempted.
This just is what it is, the personality of your other headphones and of your chain will undoubtedly play a big part in your decision to keep these around for a while or pass on the experience. I don't see the HD-700 as my ultimate reference headphone, but I sure do like the idea of us hanging out together for quite some time to come. For a music lover that really values the personality of these headphones, they could in fact be the "one and done" solution, but for a true audiophile this is definitely not going to be the case. For those of us who like to keep one foot in each camp, the HD-700 is extremely deserving of your audition and may in fact earn a prominent place in your collection.
Edited by Greggo - 1/23/14 at 2:11am