How to tame a bright system?

Hi all,

I have been facing a problem, the brightness of my system:

Bluesound n130  --- Chord dave ---- audioquest fire (xlr) ---- Etude  ---- copper wire ---- B&W 606s2.

The brightness shows up, particularly after I upgrade the cable from the chord company clearway (RCA) to the AQ fire (XLR).  AQ fire really improved everything. However, the high frequency is too cristal to my ears (especially the "ding, ding" sound from the piano, I believe most of the people would love it but not me .... ).  I like the cheap clearway, but it does not have the excellent bass and the dynamic offered by fire. I also tried with AQ Mackenzie (copper) which gives a proper sound but lacks space. I also found the vocal of fire is a bit forward (I am not really big fun of forwarding vocal).

Can someone help to recommend a cable that has everything of clearway but more dynamic and extension at the low end? I think this would be an ideal cable for my current system.

If possible, please help to focus on the cable rather than the other components. I know there is a lot to improve, but not at the moment.  Thanks a lot guys!  ;-)