I'm afraid the headroom comment (misplaced, retracted for the record) obscured my larger concern -- which is that I'm not sure you'll like the sound of a system in which an NAD integrated amp being used as a dedicated preamp. Integrated amps with "Pre-out / Main-in" loops are, in my limited experience, better suited (and more often used) as dedicated power amps, since the preamplification of the signal is such a hand-embroidered invitation to add distortion. I mean, if you make a small mistake before you amplify, you'll hear a much bigger mistake through the speakers, n'est-ce pas?