we are an Nad dealer the c658 is in essence a deluxe node it will not really outperform a node as a streamer.
the design of theC658 was developed to add full preamp functions and Dirac as a step up product from the Node.
if you want a dramatically better streamer we recommend a 432evo server
start at 3500 to 16k
fully modular and upgradable full Roon core and endpoint
Dave and Troy
Audio intelect nj
Nad and 432evo dealers