Is there a way to improve the sound?

Mike Moffet is such a funny guy he would probably laugh at the auto-correct of his mane to Mike misfit. I'm also getting tired of some people saying vinyl is clearly superior to digital when they own $40,000 turntable setups and a $300 CD player.

The NDS/Uniti employs its own software that allows for pretty comprehensive use of metadata with the WAV files; aside from requiring much more storage capability, there is no disadvantage to using WAV files with the NDS.  The original poster mentions having the NAIM ripper, so presumably he is ripping and storing in WAV unless the means of storing is set up so that the files are converted again to some other format.  

At this price point, the sound should be quite good, so it appears that there is some kind of problem that should be sorted out.  

I like the sound from the NDS (I own and use it), although I actually slightly prefer the sound of the 555 cd player.  The NDS sounds more like current high-end digital sources, the 555 cd player sounds weightier and more old school (more like analogue sources).

I use Tidal too.

The audio stream website has been very helpful in tweaking my system.  Mike Lavorgna is quite knowledgeable and has online tutorials/articles about how to properly set up a system.  Good luck!!   I also have a very good analogue setup and believe that both vinyl and digital can sound very good depending on the mix/mastering of the piece of music.

Your interconnect and speaker cables are important ! Kimber, Wire World, and purist . Cables are for life your dog is good for only 14 years