When we finally come up with a machine that measures the sound differences in wires, jacks, op amps, resistors, inductors, etc, into infinity....that will be nice
Wires, jacks, etc. don’t emit sound. There are no sound differences in wires, jacks, op amps, etc., only differences in electrical characteristics/parameters. We do have machines that can measure them. What we can’t account for is human subjective preferences. Whether or not a change is an improvement or not isn’t in the equipment, it’s in the perceptions of the listener. "Better" or "worse" when it is applied to sound is subjective. Get over it.
Your goal is to sell people on your mods so you can earn a profit. You tell people your mods make the equipment sound better. You preach how they are universal, blah blah blah, but it's just your opinion. You pray on the insecurity of others and play your siren song...All for money. How loving.