I haven't read the other comments, but if you have a problem with brightness, I wouldn't look to cables for the fix. Firstly, look at room treatments: sound absorbers, etc. Secondly, find out which component of yours is causing the brightness, and consider upgrading, or changing that component. If you don't have the capacity to do the aforementioned, then you could try various cables from various sources, such as the cable company, which will allow you to test various cables in your system for a small rental fee.
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?