streaming and audiophile stereo

You probably have a laptop PC laying around and I assume that you have a CD player with a decent DAC or a separate DAC. I would suggest that the first thing you try is to get a trial Qobuz account and use your PC as the streamer. Hook the PC up to your DAC with a USB cable and get a sense of the sound quality. Pick a few tracks that you have on CD and compare them to the streamed version - making sure that the versions are the same (not remastered). An original unremastered version on the streaming service will always be 44.1/16.

You may find, as I did, that the sound quality using a PC as your streamer is about as good as playing a CD. I don't expect a streamed file to sound better than a CD played through the same DAC so if they are equal then the streamer must be doing its job reasonably well without harming the digital file. If the streamed file sounds a lot worse than the CD then it's a good indication that you will gain sound quality with a better streamer.

This is a good exercise to set your expectations. If you go ahead and spend a lot of money on a streamer it will be a good idea to compare it to a few CDs to see if the money spent bought you additional sound quality. I do the best I can to suppress expectation and confirmation bias by comparing components against a control. Using your CD rig as a control to compare streamed file performance will help keep you grounded.

BTW, I mentioned Qobuz instead of Tidal because you don't have to worry about MQA with Qobuz. Some people buy into the MQA story and some don't (I'm in the latter category) but if you decide to go with MQA you will need to understand the unfolding process and how it relates to different components in the stream, particularly the streamer and the DAC.

Lastly, if you try streaming and you really like it you may decide to venture into Roon. Before you spend significant bucks on a streamer I suggest that you research Roon and get a sense of whether or not you might use it in the future. Roon has it's own ecosystem and how it operates will affect the streaming and file management system you put together. 

Although it took me a while to figure it out, I’m kind of slow with newer technology, I can heartily recommend the Rose Hifi 150 b streamer dac. It’s feature laden and sounds as good if not better than my turntable which is a Rega P8 with an Alpheta 3 cart. It has both xlr and rca inputs and outputs.

I stream both Tidal and Qobuz and both can sound really good depending on the recording. There are several online dealers that carry the Rose who have 30-60 day return policies so you can audition it. The reviews are stellar and many.

@twilightround from what I’m reading you are mentioning Roon, Tidal and Qobuz in the same context. Just to be clear….Roon is a music database management and player software/tool that requires streaming services or a drive/storage with your music on it. 
You do not necessarily need Roon. You can stream and play music from Tidal and Qobuz using your streamer’s native app/UI. 

OP,

Roon adds a layer of complexity that you may not want. Qobuz will give your access to tens of millions of tunes. They have over half a million high resolution albums, for around $12 / month. I don’t buy CDs any more, and have been giving mine away… my streamer usually sounds better, or at least as good. Physical media is becoming a thing of the past.

I recommend a single box streamer… BlueSound on the budget (~$1K) end to a much better unit the Aurender N200 (I own the previous iteration ~$3.5K) to the Aurender W20SE (which I own $22K). None of this is about status… only sound quality. It improves dramatically with price. You plunk the box down, connect to network (I use a wall wart wifi extender next to my audio system ((~$59)) ). You log on to the box with your iPhone or iPad… and connect directly to Qobuz or Tidal. You get high end audio output to sent to your DAC / preamp / amp / speakers.

This is this simplist and best (my streamer sounds as good as my high end vinyl leg) solution for high quality sound and simplicity. The streamer app… allows search, creation of libraries and play lists… etc. Roon adds a layer of complexity and greater search function and cost. If you want high sound quality then you want a dedicated streamer and not a PC with some software to make it stream… this is a long and endless discussion among luddites and those living in the present. I spent 40 years in IT, I am happy to leave this stuff behind.

Here is a link to an informative paper on this.  It makes the point, and I agree, that you can only hear the full benefits of MQA if the recording was done in MQA.  Otherwise MQA is a simple means to compress data which gets uncompressed by the dac.  You also can't hear more than CD Redbook standard of 44.1K 16 bit.  There isn't music streaming above that standard that you can hear.  The upsampling is a means to put the noise in the inaudible range. 

The better "sounding" streamers are about noise reduction or lack of introducing noise into the data.  So shielding, multiple power supplies etc.  Your DAC does the heavy lifting of filtering noise..  I have the Lumin U2 mini and I am not sure the bluesound node would create an audible difference in the sound if you only use the streamer part of it. Would love to test that someday if I can get one. 

Tidal is better for me since it offers two things Qobuz doesn't. First a radio function to find new music based on a song, album, etc.   The second thing is you can add a song from anywhere on Tidal to an existing playlist.  I could not do that on qobuz because I had to use the Lumin app with Qobuz but can go directly from the Tidal app to the Lumin.