Why Power Cables Affect Sound

I just bought a new CD player and was underwhelmed with it compared to my cheaper, lower quality CD player. That’s when it hit me that my cheaper CD player is using an upgraded power cable. When I put an upgraded power cable on my new CD player, the sound was instantly transformed: the treble was tamed, the music was more dynamic and lifelike, and overall more musical. 

This got me thinking as to how in the world a power cable can affect sound. I want to hear all of your ideas. Here’s one of my ideas:

I have heard from many sources that a good power cable is made of multiple gauge conductors from large gauge to small gauge. The electrons in a power cable are like a train with each electron acting as a train car. When a treble note is played, for example, the small gauge wires can react quickly because that “train” has much less mass than a large gauge conductor. If you only had one large gauge conductor, you would need to accelerate a very large train for a small, quick treble note, and this leads to poor dynamics. A similar analogy might be water in a pipe. A small pipe can react much quicker to higher frequencies than a large pipe due to the decreased mass/momentum of the water in the pipe. 

That’s one of my ideas. Now I want to hear your thoughts and have a general discussion of why power cables matter. 

If you don’t think power cables matter at all, please refrain from derailing the conversation with antagonism. There a time and place for that but not in this thread please. 
@jea48 haha! It did not happen, but we tried.

@djones51 I’ve heard that a power cable needs to be at least a minimum length to have a good effect, say 5’ or more. I don’t understand why but it makes sense to me that there would be a shortest length which has an effect. I don’t think a 1/8” long power cable will do much good.

@geoffkait I agree it can’t all be psychological bias. I have too many personal experiences that tell me something else is going on (in many instances). I remember when I was exploring different speaker wire gauges, dielectrics, and geometries. Many times I hooked up the cables and expected a positive improvement and got it. Then I hooked up a cable that I was so confident would be the best yet and I hooked it up and it sucked the life out of the treble. Still convinced I had a good cable, I tried it again and again at different times of the day, in different moods, and after some burn-in and even after trying to trick myself that it was better sounding - it just wasn’t. I ripped it out and went back to my original cables. In no subtle manner, the sound was back to enjoyable with lively treble. There is a zero percent chance that what I experienced was “all in my head.”
I really did not mean their would be a loser. Just fun and perhaps some learning tied in with a good show.
geoffkait wrote:

"Psychological bias cannot be used to explain all positive results." ......
"But to claim it explains all controversial or mysterious audio phenomena is pretty absurd."

That poor, poor strawman geoff, won’t you ever stop beating it? Have some mercy on the thing!

I really did not mean their would be a loser. Just fun and perhaps some learning tied in with a good show.
Please count me in as a potential subject for a blind listening test. However, if you think it's going to be fun, you'll almost certainly be disappointed. I've participated in a few of these tests. They're tedious. And boring. And that's even before you try to digest the results.