Prove it. With measurements. Subjectivity is worthless in a scientific field. Have a read around 'experimenter expectancy' and you will see why cables can appear to 'sound different'. If all three of your cables measure the same (which if you've built them properly out of appropriate materials which I've no doubt you have), I will stuff a banana up my bottom if you can tell them apart in a double bind test.
Putting fallible subjectivism aside, why would cables sound different? This is audio. In terms of electromagnetics, it's a walk in the park. Things don't get difficult til you get up into GHz.
Putting fallible subjectivism aside, why would cables sound different? This is audio. In terms of electromagnetics, it's a walk in the park. Things don't get difficult til you get up into GHz.