SQ definitely improved by adding Cullen C7 PC and Supra CAT8 to my Node2i. But putting Network Acoustics ENO filter in the mix took things to an even higher level. This thing is not so much a "tweak" but more like an equipment upgrade.
A-gon member Grannyring wrote about it here: https://forum.audiogon.com/discussions/streaming-sound-quality-want-the-very-best-sound-quality-netw...
I have no affiliation with the company, and am loathe to come off as some kind of "fanboy"; but I've been happy with the there's a 30-day no risk trial. Of course YMMV.
Happy Listening!
A-gon member Grannyring wrote about it here: https://forum.audiogon.com/discussions/streaming-sound-quality-want-the-very-best-sound-quality-netw...
I have no affiliation with the company, and am loathe to come off as some kind of "fanboy"; but I've been happy with the there's a 30-day no risk trial. Of course YMMV.
Happy Listening!