After reading years ago, ... I chose to ’believe’ in the individual small strand concept of minimizing ’skin’ effect. Could be ridiculous at our short distance, but nonetheless
I was taught to keep speaker wires the same length, may be ridiculous at our lengths, nonetheless
I built my own using Cat 6 STFP Oxygen Free Copper. Sound as good as anything I have used or heard (I’m 75), but in any system, what are you hearing but the sum of it all.
I used two colors, one negative, one positive, crimped ends and attached expanding WBT type banana connectors.
Twist the two cables about 4 feet, tape, twist other direction about 4 feet, tape, keeps you from having to flip the entire length of the cable for every twist.
These are Cat 7, STFP, Oxygen Free Copper, each strand 23 awg (most are 26 awg). 8 x 23 awg = 14 awg.
Allow for slack both ends to make your life easy.