Personal experience
My system is currently 7,6K, and I'm following upgrades that I know will further affect them.
For example, their bass has never been powerful, and with the current system their bass would satisfy any bass-head audiophile, and the point is that everything else has evolved
they are completely different headphones from the ones I heard on the Marantz HD DAC1, with the same character. And a lot of times I thought it couldn't get any better, so I'm going to the next upgrade because they can still
On each added cable, they showed a change, while the other headphones were unchanged.
I never made fictitious pompous statements
I don't care how my thoughts will be accepted, I don't have any benefits from embellishing what it is.
From others I expect (on this forum) to show me the way in which I will improve my audio experience, and I present my observations to point out to others the possibilities