Wilson Alexia 2

George:
In my home, the only difference in bass response between the Dag Momentum S250 and the Audio Research amps was the quality of the bass, not the depth or slam. The quality of ss and tube bass are quite different as is the midrange---but re slam--I could not tell the difference nor could an experienced recording engineer who sat with me during the evaluation. Stereophile measurements are important-but more important is what you hear when you hook things up. That being said, as I've said many times on this forum, the Dag amps are great and would be my solid state choice for Wilson.

Many times. An all Spectral  system with Wilson presents an extremely accurate but, IMHO slightly antiseptic sound--unlike, say, D'Agostino, Wells audio, Lamm 1.2 (hybrid) or tubes (ARC, VTL, VAC, BAT) which are my personal favorites because they draw me in more than solid state.
OTOH, I love their cd player. 

You should really listen to the Alexia 2s with ARC Ref 160 monos. I have had in house in the past the Ref 250s, the D’Agostino Momentum S250 and now the ARC Ref 160 monos. The Ref 160 monos are the most musical and natural sounding amps that I have ever heard with Alexia 2s and I now own them. The ARC power supplies are monsters that enable the amps to grab and slam the bottom end as well as anything I have heard to date.

Hi George:
I read the Stereophile measurements and the review when they were published. I cannot speak about the Gryphon. I can speak about what I heard in my room. Measurements are helpful to determining how components may interact. Nothing beats actually listening.