In your opinion would the Rogue Pharaoh at 185 into 8ohms and 350 into 4 ohms be acceptable to drive the 803s
I'm not a Class-D lover yet for full range, in the future maybe when semiconductor technology allows it to do the things I'd like to see coming from it.
As for the Rogue it would be nice if they gave the 2ohm figure as well, but they hardly do with Class-D amps specs, as they tend not do the doubling act down that far. It should be ok, maybe not the best in my view.
Seeing you have a pre already, I'd prefer a medium size Krell or maybe even a John Curl Halo A21 or if you can afford Halo JC1 Monoblocks.
Cheers George