AudezeFazor technology does NOT affect the frequencies below about 800-900Hz.There are people blogging the Fazors have weakened the low frequency
performance - they're wrong – we can show you the graphs. However, the Fazors do smooth out the midrange (so perhaps some listeners might think the bass has changed), and they do lower the distortion. They also move the sonic presentation slightly forward from the center of your head to behind your eyeballs. Please note the Fazor improvements are refinements, not revisions, so you would have to compare Fazor and non-razor versions side-by-side to hear the differences. We see this happen all the time at the headphone shows - customers bring their older LCD2s to compare to the Fazor version, and they hear the subtle differences. FYI, virtually all of these customers ended up buying the Fazor version, or paid for an upgrade. However, we did make a change to the diaphragm material shortly before the Fazor change to be able to make the headphones much more consistent. This could be why some measurements of earlier models are different than the Fazor versions. Also, at very low frequencies, the slightest change (even 1mm) in headphone placement on the dummy head in testing can give different results.
There can be one issue with the Fazors – it pokes out a few millimeters inside of the earcup, and for a very few people (less than 5% of the population), the ridges of the Fazor elements touch their ears, and this can be uncomfortable.
Another point to consider is that with commercial digital recordings, there is virtually NO information below 40Hz (unless specifically recorded AND mastered). And headphone/speaker response at 5-20Hz is not really "heard" by humans; it is bone and body cavity conduction. If you really want better perception of frequencies below 30Hz, you might try adding a subwoofer (although very few go lower than 35Hz) or a device like the SubPac.