I have a Node 2. I use it to stream Tidal MQA. I started with an optical cable and found that sound was Much improved by switching to Coax. I am using a Cambridge 851C for my DAC. Another improvement. I upgraded my Coax to an AudioQuest Coffee, again, another improvement. Then I happened across a AQ Diamond coax and the sound improved again. Finally I, just for fun used the Doug Schroeder method and used silver Y splitters and used both the coffee and the diamond coax together. Well darn it if it didn't improve again.
Improvements equal soundstage, musical separation and depth. It is instantly recognizable. Hard to go back.
