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. 
128x128mkgus
The *velocity* of all the audio frequencies are changed equally when the temperature changes in the room. Be that as it may who would listen in a room that’s 60 degrees or 80 degrees, anyway? Answer at 11. Even if the temperature was 60 or 80 degrees the sound would be about the same as at 70. Mystery solved.
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To throw something else out there, on many occasions Ralph (Atma) has noted that balanced equipment lessens the need of expensive interconnects. Does the same go for power cords? I run differential components sans the power amps. Entire system runs on Equi-Tech and BPT for AC. For the longest used Mcintosh MC60s with captive power cords and was advised not to change them. Upgrade (I hope) is coming.
Power cords will be needed. Does my balanced power relieve somewhat the need to go high end on the power cords?


@dentdog  
 
For interconnects, balanced does result in a few dB lower noise floor/distortion, anywhere from 1dB to 10dB usually (depends on the gear used).
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