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

My vinyl is fine so maybe the cable or break in? 

A treated room can be useful, but given that you like your vinyl, something else might be at work.

Another issue with any of our suggestions is that we all have different taste, differing levels of hearing loss and so on.  So, one persons not bright might be another’s irritant.

You might check with @blisshifi (Juan) regarding USB vs SPDIF.  Juan sold me my Aurender and pretty much sorted my system, short of future upgrades.   I suspect that USB would be preferred.  If so, then you need to do cable rental, or purchase from a vendor with a good return policy.  If SPDIF same process.

Good power will improve both analog and digital.  Great room acoustics will improve everything.

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.