Cables to settle brightness

WOW!  Great thread.  I am in the OP's boat too, but it's not my DAC, which is a Denafrips Pontus II.  I actually think it's elsewhere in the digital chain.  Also have no issues with vinyl playback.  I upgraded to a Small Green Computer Sonic Orbiter i5 about a year ago.  Most cables in the digital chain are from Morrow Audio.  I have a Sonore UltraDigital and UltraRendu, using the I2S over HDMI to connect to DAC.  On some material it sounds really good, but my previous digital chain made everything sound liquid and musical, and I miss it.  I will look into some of the suggestions made in this thread.  Thanks!

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. 

@bondmanp 

I would suspect your streamer. I highly recommend Aurender. Either one of there lower level models or an older one. They are detailed and incredibly natural sounding. I have two of them after owning and researching the daylights out of the others. There is a reason Aurender are the most used streamer at audio shows. They mitigate most deficiencies in networking. I run mine directly from wall wart WiFi extenders and have vinyl level performance.

Using cables to tame brightness isn’t going to work to change brightness! Period! 

+1 on the Aurender streamer—mine has been a solid performer.