D'Agostino vs. Ayre

I heard the Alexia 2s at RMAF. Amazing loudspeakers. Driven by all Nagra electronics, they were truly magical. And that's under show conditions. I understand Wilson has redesigned the crossover in the Alexia 2s to make them more amp friendly in the bass.

@OP,
The Zero Autoformers would have compensated for the low impedance of the speakers. I know Ralph recommends them for older Maggie's which have the same characteristics.
Though my Vandy Treo's are fairly easy to drive, I bought a pair of Zero's to try. Steve McCormack says they do make a difference, too. So, I want to give it a try-just for fun. If a SS and Tube guy can agree on something, maybe it has some credence.

B

@gdnrbob.  
I find it interesting, in theory, that a designer like Ralph Karsten specifically omits the output transformer in his designs (hence the OTL) to eliminate the distortion caused by the induction in an output transformer. Then someone, like Zero Autoformers, creates a transformer in a box to be added to the signal chain to alter the impedance. But the only thing that matters is the sound. Please let us know what you hear if you try some.

gdnr

RV said this about the autoformers in my Mac 202...

move on and never look back

he may actually have been more direct
it has been like 7 years....

Mr. V. can be a bit brusque but his heart is in the right place and I value his intuition and knowledge.
Be that as it may, I will give the Zero's a try, and post my impressions.
This is the fun part of putting together stereo systems.
Well, at least for me.
B