I've owned the Roksan Kandy III and don't believe it will do it for you. How about the Musical Fidelity A-5 integrated. They are close to your price (used). Also, there are quite a few listed. If that doesn't scare you away the 250 watts per side should be enough.
Maybe some bigger Silverlines could help fill the room.
Maybe some bigger Silverlines could help fill the room.