I think you can change the sound from the NAD for that price but options that are clearly better with those speakers may be few.
I'd look at a Class D Icepower integrated like Bel Canto S300 which comes up for sale periodically on A'gon and that is nimble and powerful enough to bring out the best from either Totem or B&W.
I'd look at a Class D Icepower integrated like Bel Canto S300 which comes up for sale periodically on A'gon and that is nimble and powerful enough to bring out the best from either Totem or B&W.