Those speakers are tremendous. A/B gear is going to run a lot cooler than class A. I run low wattage tube amps and they run absurdly hot and warm my room. Big, class A, SS amps are going to generate a ton of heat.
Not going to be as cool as Class D, but check out the AVM Ovation 8.3 mono's. They will deliver plenty of power for any speaker and are extremely natural sounding. I have a pair that were damaged in shipping around if you want to hear them. They are jaw droppingly good and I think will be an interesting alternative to Pass.
Another interesting option would be VTL Siegfried IIs. Again, tons of power and tonally VTL would be a good match.
Gryphon and Pass are fine options and are certainly great sounding. Good resale with both. The other one I can't believe hasn't been mentioned is Naim. It is the sister company and it sounds amazing.
Not going to be as cool as Class D, but check out the AVM Ovation 8.3 mono's. They will deliver plenty of power for any speaker and are extremely natural sounding. I have a pair that were damaged in shipping around if you want to hear them. They are jaw droppingly good and I think will be an interesting alternative to Pass.
Another interesting option would be VTL Siegfried IIs. Again, tons of power and tonally VTL would be a good match.
Gryphon and Pass are fine options and are certainly great sounding. Good resale with both. The other one I can't believe hasn't been mentioned is Naim. It is the sister company and it sounds amazing.