@dvdgreco , There is no doubt that adding a good quality streamer to a good system will make a big difference. It is likely that the Node and the Cambridge are not all that different.
I added an Auralic Aries G2.1 in front of my already good sounding Tambaqui DAC and it made (to me) a noticeable improvement. I did not want to believe this, as there is a good streamer in my Tambaqui. But it did. I use USB from streamer to DAC, and also enjoy the Muon Filter in front of the streamer. I also upgraded my network cables to Supra shielded Cat 8.