Cables to settle brightness

I had speakers that I felt were a little bright on the top end (Focal Diablo Utopia III's).  I have very good success with Morrow Audio cables, and particularly the SP-7 speaker cables.  not expensive and they work great.  I also used MA7 IC's as well.  Overall, it was a good match for that system

@w123ale you’ve chosen the right path! Congrats and enjoy!

Well, switch DACs again as ultimately I found the PS Audio too laid back for my system. Now have a Weiss 501. Fantastic in all ways. Sorted the brightness but I didn’t loose sound stage and dynamics.

trying with Sunyata Alpha/Delta now—really a fantastic combo.

DACs and Cables can both impact the sound in unexpected ways.

Run a less transparent dac with smoothed over cables, can be veiled over.  

Run an overly transparent dac with extra transparent interconnects, fatiguing.  

A neutral non-oversampling dac with neutral interconnects can be total bliss.   

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Matching components together really well is an art form in itself.   

This is the problem with the band-aid approach, otherwise known as system matching. The idea is to cover up flaws of commission with flaws of omission. Proponents of course put it in more favorable language, but the result is the same. 
Somewhere in your system, probably a whole lot of somewheres, is/are the offending component(s). But rather than face that difficult reality the consensus is, cover it up. Thus the band-aid approach. 
Power cords, interconnects and all cables are components in their own right, to be auditioned and selected on their own merit. Not based on how well they hide past errors. Otherwise, even if you do find one that does that job now, odds are the day will come when you go to upgrade and find it cannot be just one component but several as each one merely peels away past band aids and the metaphor collapses, because wounds heal but what’s under the band aid never does, it just sits there festering eating up time and effort and money.