Who says cables don't make a difference?

Boxer12;

I have ever made a comment about ICs, cheap or expensive. You have me confused with someone else, I’m afraid.

About your electromagnetic radiation comment. You are assuming that it is always present in all systems in enough quantity to audibly affect the signal being conducted. There is no evidence that I know of that supports that assumption. While possible, it should certainly be easy enough to test that hypothesis. If there was anything to it, I would suspect that cable manufacturers of interconnects whose designs yielded the lowest interference measurements would use those in their advertising to increase sales and making choosing interconnects easier for customers. But no such tests or measurements seem to exist. If “boutique” cable manufacturers actually try to technically explain their product’s superiority, they usually do it with technological nonsense. Most companies don’t bother to explain what even they don’t understand.

After a power cord delivers the needed Amp and required voltage to the PS of an amplifier it had no effect on the sound . Filtering your line in an urban area may be.

Mocassin2,
When one thinks about what comes before and after The “boutique” power cord: miles of cable before the mains plug including the house wiring and circuit breakers, and a tiny fuse filament and 18 - 20 gauge wire before and after the fuse to the primary of the power transformer through the power switch, it’s difficult to understand what a 1.5 - 2 meter length of cable, the thickness of a baby’s arm (or, perhaps, leg) is supposed to be doing.
But I am a firm believer in isolating one’s audio system from the mains supply. I use a hospital 30 Ampere isolation transformer with LRC filters on both the primary and the secondary windings. Looking at the mains coming out the wall with one channel of a dual channel oscilloscope, and the secondary of the transformer with the other channel, the difference in the interference noise before and after the transformer has to be seen to be believed. The difference in sound with and without the hospital supply is anything but subtle.

Cables, Capacitors, Diodes, Solder ... it all has a sound. Can we hear it in our room? Can we justify the expense?  Maybe, maybe not. 

It's no matter ... the main listening tool is ME.  Upgrade yourself first and always.
There are a lot of people who don’t trust their ears, and they will preach the gospel of their ways to make you believe their faith. They call themselves scientists.  Science is how sound moves on a wire, it’s not how we judge that wire for sound.

"Wire is like a condom. If it works, everything is fine. If not ..." Herb Reichert from an issue of Listener. Sane advice!