How would you power Wilson Audio Sasha or Alexia II?

Gryphon amplifiers.

From personal preference:

Luxman / D’Agostino / Ayre.


From what you should listen to if you can to form a personal opinion:

Pass / Ayre / Luxman

How about the preamp and power amp(s) you listened to when you auditioned the speakers?  If the music moved you, that is what you're looking for.

robert1976

How would you power Wilson Audio Sasha or Alexia II?

Which pre and power amps should I audition to find a match made in heaven? Total budget for pre and power amp(s) is $50-60k.

If you have that kind of budget, the VERY best for these speakers are either a
Gryphon Antillion Evo stereo
https://gryphon-audio.dk/shop/power-amplifiers/antileon-evo-stereo/

or the Antiilion Evo monoblocks.
https://gryphon-audio.dk/shop/power-amplifiers/antileon-evo-mono/

And take your pick for the preamp
https://gryphon-audio.dk/produkt-kategori/preamplifiers/

Cheers George

Definitely Luxman, Why? Luxman M900u has ability to double down to one ohm.
Both speakers you described have a reactive load. In other words, it’s all over the place and needs an amplifier that can handle the dips and peaks related to phase and impedance the load of the speaker has. Both Luxman M900u and C900u will run you $30000.

You could look at a pair of Chord Ultima 2 or 3 Monos and either the Ultima Pre or the Ultima Pre 2.  I have a customer who has an Ultima 5 and is in love with it but is using his DAC as the preamp.  

The new technology in the Chord Ultima line inclusive of the error correction technology is phenomenal and the power supplies keep getting better.  You could definitely do the Ultima Prem with the Ultima 3 Monos.  These are my new favorite solid states above Ayre's Reference line which does pair brilliantly with Wilson.  One of my favorites systems I have ever heard was Ayre monos driving Alexxs.   

In this line, the Chord sterility has gone away and paired with a musical speaker like either of those Wilsons, the pairing should really excel.  

The issue with this is that it is going to be tough to hear these as no one that I know of has them on display.  I just did some hunting for another customer.  

Lamm Industries L2.1 Reference preamplifier and M1.2 Reference monoblocks. Lamm and Wilson is a classic pairing.

disclaimer: I’m a Lamm Industries dealer.
https://gestalt.audio

I have Wilson Alexx with Lamm M1.2, L2 pre amp and PL2.1 phono. There is nothing better:). Power wise, it is difficult to go past 25% on the volume dial as it get too loud. Pure Lamm/Wilson magic!