Sound quality differences in streamers

I will say that almost everything makes a difference to the sound quality. A fine switch like the Melco S100mk2 or a fantastic switch like the Melco S1 should be considered for your audio chain. Then a streamer like a Lindemann Woodnote Solo or Melco N100 server/streamer with linear power supply are audible improvements over a Wiim or Bluesound device.The nice thing about buying an entry level streamer like the Wiim or Bluesound is that you can easily sell them on when you want to move up the food chain.

I, too, see the Sonore Signature Rendu SE Deluxe as a wise investment.

Currently working to hardwire mine very soon.

I’m not going to disagree with any of the above, and I certainly agree that everything can make a difference. I have several rigs, several DACs, several streamers, amps, SS and tube, and way too many pairs of speakers, and with exception of a Cambridge Audio CXN V2, my WiiM mini, WiiM Pro, Bluesound Node 2i, Lumin Mini and audio built PC all run through outboard DACs.  Various Toppings, Denafrips, and Musical Paradise tube output stage DACs.  

I think this is where the law of diminishing returns and room setup comes into play.  In my lower cost, yet resolving systems in terrible room setups due to furniture, room size/shape, where the speakers can’t be ideally set up, I can’t really tell a great deal of difference in the streamer/DAC combos.  So it doesn’t matter, the WiiM mini with a Topping E30 sounds as good as good as any other combo due to room and speaker placement.  In fact swapping out various amps has more of an impact on SQ with same speakers than streamer/DAC.  
 

Now, when it comes to my “main” rig where every component costs thousands more, there is a tall ceiling, equilateral triangle listening position, decent room acoustics, a dead quiet tube amp and highly sensitive horn and French “audiophile” speakers, yes I can tell a difference.  But I also have several other tweaks in this set up, separate power line from box with true earth ground. hospital grade outlets, fiber optic internet router, Ethernet switch, LPS on everything I can, power conditioner, ceramic fuses, a DDC, R2R DAC, better cables, way too many NOS tubes, etc., etc..  So would I put the WiiM Mini in as my streamer? Heck no! 

So, moderately priced system, decent room acoustics, moderately priced streamer/DAC.  High-end system ($100K plus), high-end room set up, and no WAF, definitely high-end streamer/DAC.  OK system in office or bedroom, terrible room set up, inexpensive streamer/DAC ok, you’d be hard pressed to tell the difference.  Like I said, everything matters, up to a point, pocket book dependent.

Before getting there there is lots of noise on the line digital not being grounded 

put a ZPS on your router I use Linear Tube Audio which comes with a great DC cable to the router this makes a nice improvement , Ethernet cables too especially at the end point on your Ethernet hub something of quality with a LPS power supply and good quality clock , then your streamer ,innuos makes a good variety of streamers ,and sense app is very good .everything counts.

1. There are differences between all price points for streamers.  More expensive streamers sound better.  There is the axiom of limiting returns.  The benefit/cost ratio decreases as price increases.  Brand and price point are personal choices because perceived improvements in SQ and benefit/cost ratio are subjective.  
2. Everything in a system matters, including room and attention to set-up detail as well as components.  My perception of a hierarchy of importance, from most important to least important is speakers, front end (DAC/Streamer or turntable/arm/cartridge/phono stage), amplification (amp/preamp), electrical conditioning, cabling, room treatment, vibration control.  Others have different preferences. 
   
   My recommendation is a used Aurender N10 which are selling approximately at you $3000 cap.  Wonderful sounding streamer.  Audition and make your own judgement.  You may find something you like more.