They are accurate....for the price. Just like KSC-35's are accurate for the price.
But like I said before, although I didn't have them too long (I tend to be lazy and only do long auditions of things I outright love and know I'll keep around for a long time) I felt that in comparison to other phones they are not the end-all of accuracy by any means. I personally couldn't figure out John Dunlavy's position...since, ummmm no matter how good they are, I still figured you should be able to discern differences between V6's and an orchestra. I mean if the pleather pads beating against your skull doesn't give it away.... I don't want to badmouth him or anything...but I still think discerning between V6 playing a recording and a LIVE performance is NOT hard no matter how much you love the V6. Dunlavy also seems to say that cables aren't very different besides a few technical values such as capacitance and resistance. Like a lot of hi-end gurus...they all are pretty quirky. IMO...there are VERY few people out there that would put on the V6 and say "Holy crap, this sounds REAL" (hmmm having re-read this statement and realizing given the typical competition of crappy headphones, I guess you could easily get this response...nevermind!). But if they were THAT good...no one would need any other headphone.
I dunno...I just think live performance puts such a high benchmark on things that is far too hasty to say that any equipment yet can reproduce and make it that difficult to discern. I've fooled around with my MD recorder and mics and listened through even Grados and felt...wow they sound pretty realistic! But you may not know this, but having actual "visual" cues and BEING at the place of the recording will actually color your perception and add to the realism. Our brain is far too complex, and truly doubt we can fully seperate visions, or even memories, from hearing. Likewise your PRESENCE in a recording situation will add to the realism. Which is why I can listen to a MD recording I created of random noise and identify what the sounds are...but give it to someone and they wouldn't know what the heck is going on.
Course the V6 are still accurate, and there are plenty of phones 2x or more in cost that wouldn't match it in that department whatsoever.