I’ve been lucky enough to have heard the M9s.
If I had $750k to spare, I’d consider them. And I’d consider the Pillium monoblocks, too.
It was a wonderful experience listening to such a fine system in a dedicated listening room. Having seen how Magico speakers are constructed, the components and care taken to do so, by an army of dedicated, focused people, I was honored to have been invited to the company/factory.
Elon is a down to earth, audiophile and gentleman.