Upgrading my blusound streamer

Another idea.  If you are really into streaming from Tidal (and/or maybe Qobuz in the future), you may wish to consider a Roon Nucleus (Roon subscription $119/year and now $699 lifetime).   
Your C47 Preamp has a USB digital input.  A Roon Nucleus could be hooked up directly to the C47 via USB. In this arrangement the Roon Nucleus would replace your Node as your streaming source.
This would give you an enhanced experience streaming from either Tidal or Qobuz.  And it could be a very nice roadmap item should you still wish to purchase an external DAC down the road.  
I've recently acquired a Roon Nucleus and love it, and have it feeding my Chord Qutest DAC via Curious USB Cable.  This replaced a Bluesound Node 2i in my main rig.  

PS to my previous post.
- With Roon Nucleus in your main rig, you could still use your Bluesound Node 2 elsewhere as a Roon endpoint.  For example,  just add a pair of powered speakers for use in an office or bedroom.
- Also, the Roon Nucleus has a bay where you can install an HDD or SSD into its case (I'd go the SSD route) should you ever decide to rip CDs or purchase downloads.

I listened to the Bluesound and then the Aurender using an Ayre Codex.
The Aurender was much, much better- more open and cleaner sounding.
Bob

Get a schiit gungnir multibit. Get a blackcat digital bnc cable. The blackcat comes with a BNC to rca adaptor for the bluesound end. Then go xlr out of the Gungnir to your preamp. You’ll be blown away. If you want to spend more money get the schiit yggy DAC, it’s better but man the gungnir is rad and you’ll be happy.  FYI I just did this and my system is pretty much the same as yours 
Blackcat 
https://www.blackcatcable.com/collections/digital-cables/products/silverstar-75-spdif-cable-universa...


schiit 
https://www.schiit.com/products/gungnir

I found the Simaudio Moon 280D to be an amazing network streamer and DAC. It's Roon compatible which I recommend for streaming and is MQA capable if that's your thing. It's the one consistent item in my system. I had a Node, PS Audio DS Jr and an Arcam Dac II among others. My A/B testing confirms the Simaudio sonically appeals to me. I can say from my trial and error that specs don't do justice in the selection process besides narrow down options. I also think there's a reasonable price point and insanity price point and the number of zeros depends on your budget. Also, a Node is fine for some systems, but as the surrounding components improve, the DAC needs to upgrade. ListenUp as a generous home trial. I'm using Tidal as well. I won't part with this DAC for the moment. Best of luck in your search.