Streamer vs. new mac mini for 2 channel system


Hi audio friends,

I LOVE the functionality of my mac mini with my 2 channel system: Exasound 62e DAC, Modwright ls100 pre, Coda continuum 8 power amp and Wilson Sabrina speakers.  Being able to navigate with mouse and keyboard from my listening position is infinitely better than using a tablet or some mickey mouse app with my phone.  

The issue is the mac mini.  Clearly this is not the best transport, however I want to use my 2 channel system for more than just streaming roon.  I listen to soundcloud a lot to learn about new music and when I watch tv I want to utilize the stereo for netflix, crave etc.  My Dac has only 1 usb in and obviously an optical + s/pdif, but the fidelity is just not as good with the other inputs.  

I almost pulled the trigger on a Lumin U1 mini, but again I do not see how this transport will improve fidelity, without limiting overall functionality.  How do I bring a new mac mini to a place where it can compete with a dedicated transport like the lumin, or is this even a reasonable suggestion?  

Looking to optimize the system in the most efficient way.
Confused - any suggestions would be much appreciated.

cshadow
I just installed https://www.schiit.com/products/modius DAC between my Mini and pre amp, now I have fully balanced system and result is stunning ! At these moment I don't see reason spending big $$ on streamer that might sound better but if it does I have to convince myself that in fact I can hear difference just so I can justify spending big $$ for not much of the improvement 
FWIW, Apple is rumored to be introducing an all new Mac Mini in the very near future.
10 years ago the Mac Mini was pretty much THE go-to solution for so many of us.

Today I am happy owning a dedicated streamer. It does want to do its firmware updates from time to time, but that's it. It's built-for-purpose and I don't have to deal with the extraneous 'stuff' of OS X.  It's Roon-Ready, and on its own or via Roon integrates the major streaming services.  And it's built by hi fi people and from the ground up is meant to be "hi fi."

Some people are happy or don't mind dealing with the Mini, or maybe have been doing it for 10 years and find no need to change.
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I had an iPad as my source going into my Schiit Yggy via an Audioquest Diamond usb.  Then balanced the rest of the way.

 I got an Innuos Zen MK III on trial and was absolutely floored by the improvements in clarity, transparency and bass dynamics.

iPads and Mac mini’s are full of noise that screws up the SQ.  Find a dealer who will let you try out an Innuos or Lumin and, if the rest of your system is good enough, you should hear a dramatic difference too.

I’ve seen people put tons of money into trying to isolate their Macs and they still suck as a source IMO.