Why does an audiophile grade power cord matter?


probably another beaten horse topic but I cannot find answers to quell my question.

Basically, most of us have homebuilder standard supply solid core copper wire with nylon, plastic or rubber sheathing that runs the length of our homes from some cheapo metal utility company supplied junction box to a 5 dollar leviton outlet Joe General Contractor buys at Home Depot. So the current at that 5 dollar outlet is what it is until we hook it up to our system.

So why does plugging in a 1.5 meter or what ever length of audiophile grade xxx hundred dollar power cord matter to go that last couple of feet to our components???
photonman
When I try a new cable I often hope to not hear a difference so I won't have to purchase it. But some cables and cords at reasonable prices do make things sound better.
I bit the bullet and bought an ac9 for my quintet, another ac9 for my amp, an ac14se for my dac and another ac14se for my wadia170 welborne labs power supply.

They made a big difference in sound. More bass right from the start. They do take a while to settle in though and the sound has done funny things. Too much bass, then too bright, now it's getting to be just right. I noticed the sound as having more weight.

I don't get why some people don't think upgraded pc's make a difference. All cable change the sound.
We all know they change the sound. Now go back to your original power cords to hear the real difference. Do you remember which one goes where?
Good point Rrog. I've always wondered buying used gear how often the power cord included is not the original one.
The original power cords, to best of my memory, were nothing special, just the same mass produced 18 awg stuff that Dell would give you with your new desktop computer.

no special design or science.