The imperfect amp: Pass or Ayre?

Wolf - harshing the mellow love it....what low distortion strings are ya using on the eight thousand dollar wonder ?

@earthtones  Welcome to the unfair advantage of Vandersteen powered bass and finally an amplifier PURPOSE designed to exploit that advantage. The M7- HPA replaced the Ayre in my system, not a fair fight for a lot of reasons. yes Vandersteen had very specific goals to hit for odd order harmonic distortion in the M7 and M5. Really a towering achievement IMO and little understood : just 5 parts in audio signal path, liquid cooling for bias set point and device stability, no emiter resistors, analog temp control ( no RF trash near audio ), built in HRS suspended truss isolation, 128 V DBS....cyclotronic circuit....the list goes on, but of. course the music and the listening are the gig....

@tomic601 , 
How I envy you...

I hate to sidetrack, and, I probably should just PM you, but I'm here...
You mentioned you had both a non-Twenty and Twenty version of an Ayre amp. Could you describe the differences between the two versions?
I keep wondering if I should upgrade.
Bob

I use Elixer Nanoweb lights.

Good components or gears are the ones that provide us with musical enjoyments. We can never judge hifi audio components with bunch of numbers (measurements). We all have to listen, listen, listen. What I look for in amps and other components or gears is musical involvement and engagement if it's used for stereo music application. 
I won't look for their distortion measurements, etc, etc.