Look into Aurender, great streamer and some models come with superb DACs, far better than Oppo.
Alternatively, get a better DAC and keep Node as a streamer. It has the best interface, IMO better than Aurender.
I own both
Bluesound Node 2 and Node2i with Oppo Sonica DAC
I love the Bluesound Node 2 and 2i. Great price point and like the easy user interface. I have run them through different DACs . Currently using an Oppo Sonica DAC. DAC is fine and much better than the built in DA in Node. But what comes after Node. Do I buy another Node, or what would be next? I find Quboz sounds better than Tidal, but still not good enough to make streaming a solution to replace my CDs and SACDs. Need to stay below $3000 for a new or used streamer to feed the Oppo DAC. Or is there another solution?