A Liquid Carbon first batch owner here, who is sad to hear this news, not just because, having been full "converted" by the LC, I was looking forward to acquiring a more advanced Cavalli amp in the league of the LAU or Crimson as a possible endgame amp, but I have got to learn about Alex, and what a wonderful person and asset to the Audiophile community he is...
Of course, the personal reasons he has listed should have priority over everything else, and I wish him both kudos, for what seems to have been an excellent pioneering career in audio, and more happiness and joyful fulfillments in the years that lie ahead.
Now to address my own selfish interests though, I really hope Massdrop would license a LAU or Liquid Crimson from Alex, as it has done for the LC, and continue to produce its own versions of those for the community, again, as it has done with the Liquid Carbon... If that sounds selfish on my part--and I completely admit it might -- I am also wondering what could be possibly wrong with such a proposition, if you think about it...?
To me they are both two first-rate HP amps within their own leagues, and they both deserve to have their production lives extended for a little longer, if that can be helped, so that they can spread their joy to even more enthusiasts in the community. If Massdrop can indeed pull this off, with the cooperation of Alex, then I really think it might almost be a disservice to themselves and to the community not to take the opportunity..., and to allow the production of such wonderful amps to simply vanish into the ether... Besides, it will be another way of honoring and prolonging the Cavalli legacy, which is well-deserved.
In short: Dear Alex, I wish you would be open to the idea if/when the folks from Massdrop come calling...
In the meantime, and once, again, good luck, all the best, and enjoy the new phase you're now entering.