Guys, the fazors are just marketing speak for those metal slits that as assume help direct the sound waves coming out of transducers. It shouldn't so anything to the efficiency etc. my guess is that fazors just helping control reflections in ear cup and hopefully making the sound better. There is no magic. If stats have changed then audeze is doing something to transducers etc.
Waveguide technology is not marketing speak. It will certainly have an effect on the sound