Naim AV System

Absolutely–you'll need to set the volume control on the NAC82 to the 11:30 position (clock reference) or so to approximate the unity gain inputs on the current range, and I'd probably use INPUT 4, 5, or 6 for connection to/from the AV2 (chartreuse-banded grey interconnect).

A unity-gain modification is available, but you'd probably find that one of the newer preamps (say, a NAC282 or 252) would be a better option, IMHO, given your existing SUPERCAP.

Beyond that, you can connect the center and surrounds just as indicated in the manual.