Wilson Alexia 2

ARC, Luxman, D’Agostino, Gryphon, Sim Audio would all be good choices. Pass maybe. Mc wouldn’t be what I’d choose over any of the foregoing. Good luck. Great speakers. 

Insanely good speaker

I heard this very pair https://www.soundstageaustralia.com/index.php/reviews/84-wilson-audio-specialties-alexia-series-2-loudspeakers 
at length over time with many different amps using the same Total Dac/Lightspeed  front end.
The only two amps out of all the ones we heard that extracted the very best from these extremely hard to drive speakers, was the Parasound Halo JC1's and the Gryphon Antillion Evo. With the Gryphon Antillion being the chosen one over the Parasound if money was no object. I dare say that the new Parasound JC1+ mono's will close the gap.

Cheers George

I heard them a few times with the T+A HV series gear. The 3100 integrated amp was great on the speakers.

So anyone heard them with Mcintosh gear?  Don’t want a hyper detailed sound that isn’t musical. Yet I don’t want them to be veiled either.  Musicality is priority 

Any high powered receiver will do the job. Dave Wilson did a demo with a receiver to show that the speaker is what mattered.

Yeah, a receiver will "do the job". A Prius will "do the job" too, but I'm not a fan for obvious reasons. But your premise that the speaker is "what maters" is silly, A receiver will always be a sub par piece of audio gear targeted to the unwashed masses. If you want to hear what any speaker can really do, it's the last thing you'd want.

Oz