Aurender n200, talk me out of signing on the dotted line

It' a family room so acoustics and set up are what they are -suboptimal.  OK, dismal.  And that's that.  WAF 

I have cables, tubes and sources (as in recordings) to work with.  Some music works, some doesn't. High pitched electric guitar or female lead can be steely - maybe acoustics, maybe a hot recording.  No sibilance problems.    No instrument problems.  In fact, instrumentals are fantastic.  I have tinnitus and am getting on in years (70) so there's that too.  I suspect it's all of the above.  I'll take it from here, one small step at a time.  Thanks for all the help!

@wlutke sounds like you’re on the right track within the set boundaries. In your case I would highly recommend the AZ Matrix Ref II as a starting point. They’re smooth and natural sounding cables, slightly on a warm side. Should be a good match. Good luck!

So I tossed the Ruby for AZ Absolute Copper.  Nice upgrade.  Much smoother and tamed the top a bit.  Will share with the tt for now.

AZ Absolute Copper are great interconnects! I had these in my system for a while. Amazing bass and mids with excellent top end.
It should solve the hard treble. 

For those who must have Roon, the latest software update has added Roon! Tapping the Roon icon asks to download Roon and takes me to the App Store.