I've continued this conversation here, as it's the closest topic
(that I can find)
Quote: http://www.head-fi.org/t/495631/amp-recommendations-for-audeze-lcd-2/8325#post_11918039
... Now, I don't know if I'll like the fazor version because of the more prominent treble. I'm quite sensitive to the low 7 Khz range and don't like forward upper mids and highs in general. Probably, I should try to find a used pre-fazor LCD-2.
I haven't done any comparisons with the non-fazors, but if you're worried about the fazor editions being too forward and having some aggressive treble, I wouldn't be. I'm definitely a bit treble and upper-mid (and lower-mid....and even upper bass) sensitive. I find the fazor treble-mid balance to be spot on.
Unlike the he400, which was recessed in the mids and very uneven in the treble, giving them an often 'screechy' and 'ringy' type characteristic, the lcd2f is just right. Sure, if the recording is forward and edgy, that's what you'll hear; they don't smooth over anything. But, by the same token, smooth recordings will sound smooth. But, providing that your source and amp are producing the goods, you won't miss any detail that is present. And good recordings will sound like just that; the character of the sound is purely down to the character/quality of the recording.
I'd like to get some non-fazors and do a comparison; many say that it has better bass. And that's something that the fazors are slightly lacking IMO. On unfamiliar recordings, I don't get the feeling that i'm really missing anything; the sound appears very well balanced, with plenty of bass.
But with familiar recordings, I notice that there's a certain substance, body, fullness or weight that's missing, that is present with other equipment. I believe that the slight sub 60hz roll-off, that the graphs show, really is quite significant; there's a lot of information in that frequency region, even if there aren't any organ pipe or synth bass notes in the recording.
I understand that the pre-fazor 'phones do the deep bass better. The graphs indicate this also. But, I wonder how much of the great fazor mid and treble balance, and the amazing imaging, that I'd lose with changing to the non-fazor.