Do know , the NAD is like newer better class D in it being very clean and likely a big improvement over the Pioneer, but quite different from the Sansui. You may want to decide which you prefer for music. I do not know the speakers I heard it on so I can only make gross comments. The salesman was all about big, loud special effects from some war movie. I have not heard of stability issues with the NAD as I have with the Anthems, which would otherwise be my first choice. So keeping my old MXR310 for only the audio in my HT. I do my music in the living room with a dedicated stereo.My actual set is, if fact, all I was looking for after a decade of research: An integrated amplifier Vintage Sansui AU-X911DG, for a smooth and powerful stereo; an 11.2 Home Theater Receiver with Atmos Pioneer VSX LX 503 and a Oppo BDP 105. All together an investment of US$ 3,000.00. Plus, an 2011 Mac Mini and a Topping E50, for evaluating MQA and Audirvana. 3 pairs of Wireworld Equinox 8 Interconnect RCA cables are my choice for connect them to the Sansui. Very happy and inside of my actual investing possibilities. NAD should be great to let me only with the NAD/Oppo. If I sell here in Brazil the Sansui, the Pioneer, the Wireworld Equinox 8 and the dueto Topping E50/Mac Mini I will get money enough to buy the NAD and simplify, update and even increasing it. That is what I hope.
I hope those snake oil cables are not damaging the sound too much.