While the Primaluna and Cayin stuff is indeed manufactured in the same facility , that is about as close to each other as they get .
I have owned both pieces and they do NOT sound alike !
I have heard the Cayin A-88T and the Cary Sli-80 side by side . They are quite similar . The V-12 is also in the same camp . However the Primaluna has quite a different sound as has been eluded to here in other threads . Your take on it is pretty good .
I have no experience with the AES .
Good luck .
I have owned both pieces and they do NOT sound alike !
I have heard the Cayin A-88T and the Cary Sli-80 side by side . They are quite similar . The V-12 is also in the same camp . However the Primaluna has quite a different sound as has been eluded to here in other threads . Your take on it is pretty good .
I have no experience with the AES .
Good luck .