I'm willing to bet that it isn't your cables or your DAC. It is noise. And it isn't really bright as much as it is brittle, like fingernails on a chalkboard in the middle of the high end. You don't hear it specifically until it isn't there and you go back to your prior configuration. It'll be either power-line noise or source/transmission noise coming through your router or switch (or both). In my experience, filtering or fixing one or both will provide noticeable results.
Cables to settle brightness
Any suggestions on a cable brand for interconnects and power cables to settle down some brightness?
I have Wireworld at the moment which I might send back.
As I move up the food chain in my system it is getting higher resolving but the treble has gotten a bit forward for me.
I added a PS Audio PowerPlant which is greatly improved the SQ, but now the treble is a little too much. Now it might settle down with burn in, but I’m not sure.
Any suggestions?