I can’t imagine wanting more warmth out of my LCD2f, so I’m on the side of fazors. They’re incredibly pleasant to listen to without losing any detail.
On the original LCD-2 (technically the LCD-2.2 circa 2012) vs. the later “fazored” versions, I had a distinct preference for the non-fazor version.
Pre/post fazor LCD-3 were somewhat less polarizing for me, and I could listen to either. Though it’s not clear to me that this is quite as simple a comparison as I believe there were changes to the trace pattern on the diaphragm that came about at the same time.
Would be interesting to hear an LCD-4 without the fazors, but not interesting enough to actually try and make that happen! Though they do benefit enormously from either “Roon’s” LCD-4 DSP preset or Audeze’s “Reveal” plug-in:
That plug-in took the LCD-4 from something I used with very specific niches of music to getting a lot more head-time.
Audeze’s plugins / apps tend to be pretty good for their headphones. Their iSine EQ was great!
The MX4 I believe is non-fazored so it is a bit like a non-fazored LCD-4. Of course the drivers are a little different along with their impedance rating so its not quite a direct comparison.
I didn’t get the chance to try out the two different LCD-2s but I am pretty much in the same boat with the LCD-3s. I liked both.
Never had the pleasure of hearing the non-fazored ones, but I do own an early 2016 fazored lcd-2 and while I think they sound great, they could do with a little bit more oomph in the low-end, even compared to my hd650.
Last year I bought Sonarworks Tru-fi calibration software, and for me personally, this solved all the issues I had with my lcd-2 and I’m a more happy listener
I would like to try the lcd-2 classic (or an old lcd-2), just to hear what the fuzz is all about.