In addition to adding an external DAC consider adding a Teddy Pardo external LPS to your Node. The Node with the external LPS performs fantastic and then you can continue using the excellent BluOS platform. Good luck!
Ron
Upgrade Internal DAC of Node or go with Atoll ST120.
Looking at upgrading to a external DAC for my Bluesound Node or picking up a all in one streamer/dac like the Atoll MS120 or ST200 or another brand all together. My price for all in one would be around $1500 and DAC only would be $1000. I stream via Qobuz. Big question would be what option between these two would sound best.