Responses from tlday

Amplifier Recommendation for B&W Nautilis 804
I had the 803s but upgraded recently to the 802s. I am powering the B&W with the Marsh A400 (200 w/ch). I would give the Marsh a listen, as well as the Bryston 4BSST and the MF a308cr.Tom 
Preamp suggestions 1200$ used
Try the Marsh P2000. You can get it new at your price point. It has all the qualities your list.