spend on the streamer or on the DAC ?

You’re getting some unusual advice here.

The sound of any system is going to be the result of two things, 1) the weakest link in the chain and 2) the interaction of the components, cables and room.

The Node2 is a weak link and nothing you’d want involved in a 5,000 Euro upgrade.

Go for the Yggy (I own, fabulous and upgradeable) and the Innous Zen Mk3.  Use any leftover Euros for the best digital cable you can get, maybe Audioquest Coffee.

Then sit back and be amazed.

Below is a comment lifted from this Mojo Audio Mystique DAC thread.

fuzzbutt17
09-25-2020 2:54pm

Hi Everyone.

Benjamin here: owner of Mojo Audio and designer of the Mystique series of DACs.

The most important thing to remember is the DAC can only give you what you feed it from your digital source. We get customers all the time who have a modest transport or server/streamer and want to buy one of the more expensive versions of our EVO: big waste of $$$. You want to use a digital source that is proportional to your DAC or all your DAC is going to reveal are the flaws in your digital source.

I agree with the thoughts expressed as to the importance of both.  For the past year I have used the Ethernet input of my Ayre QX5/20 fed by an i5 computer as roon core.  Very nice presentation.  Recently added a Wolf Alpha3SX server and moved to the USB input on the Ayre.  Everything elevated to a level I was not expecting. I also tried different power cords for the Wolf and different USB cables...  In this experience I relearned or at least reinforced the idea that every part of the digital chain needs to be balanced against the rest and the sound is affected most by the weakest link even if that is a simple cable. Your experience may be different but in my opinion invest in both in a balanced way...

The Mojo dac is far from crude and you should do your homework before saying such a thing. Ben is a digital expert and builds one of the very best sounding dacs available at any price. Simplicity in design executed brilliantly is a magical audio recipe that is very difficult to pull off well.   The power supplies in the Mojo dacs are the best I have ever seen. His attention to proper grounding is far from crude and cutting edge.