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. 
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@doitwithlife Wow, that’s pretty fascinating! I wonder why cable manufacturers don’t do demos like that? Or maybe they do and I’m not aware of them. Honestly, I bought my cables without seeing a demo or hearing them. I went off reviews and my positive past experiences with cable upgrades and the money back guarantee helped too. 
@doitwithlife, Now we are getting somewhere.  Difference in both input and output waveforms?  The power cable is between the wall and the regenerator?  Is it possible to share the waveforms?  I would love to get a look.
@doitwithlife - Rather than explain why, can you explain what the differences are?  That is, voltage waveform differences, current waveform differences, mA, mV, etc.  
I'd be more than happy to share a couple of images showing the differences. Someone please share with me how to post on this site.  I got my ca ble on blind faith. It lives between the wall and the regenerator. I chatted with the manufacturer and suggested there on the output to my directstream dac. I tried moving it to the dac and thats when i felt it was like taking air out of the tires. Its back at the wall now. 
The specific measurements I have are . These are with my upgraded cable.

THD in currently at 2.0 -1.9%. Was closer to 3% with factory cord

Voltage in 125.3. This doesn't change with the PC

Scope view of the input wave shows significant mess at the peak, more clipping  the leading edge than on the trailing. Its not totally obvious when doing and A/B of the waves what the difference is. What is more helpful is the difference view which shows the input wave vs the output wave. With the upgrade I see 3 peaks of correction leading and trailing. Its rough but there they are like mini waves of correction. With the factory cord this difference view is very course and haphazard. No symmetry in the difference.  My takeaway is that there is  clearly more noise in the waveform with the stock cord. Lots more correction required.  Even with the regeneration process "correcting" the waveform I'm still able to hear the difference. In my world that is powerful. 

In both cases THD out  reads 0.1% I don't know if thats as low as the unit will report or its the same measured value