Interesting, I had not previously heard the LCD-2 & LCD-3 are now more effficient, but I just noticed the they are both now rated as listed here on Audeze's website:
•Efficiency: 94dB SPL / 1mW
Am I mistaken, or were they previously rated at 91dB SPL / 1mW Efficiency ?
Does this have something to do with the Fazor's making them easier to drive? If so, I guess they are closer to the LCD-X now in ability to be driven more efficiently by portable headphone amps? Anyone have any more info. on this or am I mistaken with their previous efficiency ratings.
I also remember them being like this LCD-2 = 90dB SPL/1mW LCD-3 = 91dB SPL/1mW