I have a Node 2i being used as both streamer + DAC with the much nicer external PS unit from PD Creative (240V converted to 120V)... wow, what a difference! Wish I could find another one here in the US.
On this system I have the Node 2i w/ best PD PSU setup, RCA out analog with some mid-level Wireworld RCA cables into a Devialet Arch unit, then converted to network to run a pair of the Devialet Phantom I (108)... WOW.
Fist off, I believe the former model 2i sounds a bit better than the newer model Node (N130) version. I have owned/used both at length on two different systems. To my ears, the Node 2i has a bit more laid back, warmer presentation overall... OK, maybe a bit rolled off. But once you tear out the stock PSU of the Node 2i, put the new board in and that external PS.... holy smokies.
I also have a Node 2i in my main system (using a Crystal Cable) digital out to a Schiit Yggdrasil (LIM) DAC - so streamer only on this rig. And then a 3rd Node 2i on a headphone rig, using as both a streamer + DAC into a Schiit Lyr headphone amp. Looking for another PD unit for this setup.
I am SURE there are better streamer/DAC combos or streamer+ DAC combos out there... but for how much more? In my experience with a lot of streamers and DACs over the last maybe 6+ years, it would need to be a lot more $$$ to beat this. Plus... part of the battle is the app... the Bluesound app is great to easily control, sort and play music from Tidal, Amazon HD, Qobuz, etc. I had a streamer DAC unit from Aualic that sounded OK... not as "musical" IMHO and the app was FREAKING TERRIBLE! The overall operation of the unit and playing your music was awful really. For that money... they should be ashamed... really.