inna OPKnowing a bit about the way Flemming Rasmussen designs his circuit, a well cared for used Antillion would be the way I'd point you, better amp user Class-A adjustable while the music is playing.
New Diablo 300 integrated to use as power amp..might be possible if I decided to finance this purchase.
One went here in Ozz for less than a new Diablo cost here, and what's 1 or 2 years out of the claimed 40 years of life before it's serviced?
Cheers George