Heresy, but here goes: Devialet to Lumin?

[Damon]

I see, too, that you suggest a cable change.  I'll be thinking about that...

@Flashman
Yes, it seems rather boring and predictable, but I seconded @Hifi_swlon 's suggestion because changing speaker cables made an important difference in my own system. And I was surprised that it did what I wanted, but happily it was a $600.00 fix, rather than another fix with more zeros on the wrong side of the decimal. Not sexy, but on target.

I also think @Confused has a good point about the frequency range that may be relevant; the mids, rather than the treble. Listen to him, not me.