NAD gear sounds wonderful with Heritage and Reference, IMO. I may be a little biased because I own a NAD pre/pro, HT receiver, and a CD player, but I am totally pleased with the sound quality.
Bill
Good to hear, i have a NAD preamp & love the sound.
My friend has one of their receivers and some Klipsch reference towers (i forgot what model they are, RF-62's maybe)
and pairs nicely.
No doubt they make good stuff.