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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
geoffkait's avatar
geoffkait
14,147 posts
 
phomchick
Those that claim they can hear a difference in power cables provide no more meat than the skeptics. If there is a difference in sound, there must be a difference in the signal going to the speakers. I have never seen any proof of this.

>>>>Well, just a comment, really. If someone did show that there was in fact a measured difference in the signal going to the speakers due to changing power cords it would not be proof. It would be evidence.
spatialking's avatar
spatialking
248 posts
 
Actually, if one had a spectrum analyzer then one could see the improvement since it is easy to measure the power output with and without the new cord for a given piece of music.    Once you have it hooked up, there is a LOT you can measure.  Granted, not every audiophile has an expensive chuck of test equipment lying around.  

I would be most audio companies don't spring for the equipment, though.  Too pricey and it is mostly useful for R&D rather than production.



phomchick's avatar
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phomchick
141 posts
 
Actually, if one had a spectrum analyzer then one could see the improvement since it is easy to measure the power output with and without the new cord for a given piece of music.   Once you have it hooked up, there is a LOT you can measure. Granted, not every audiophile has an expensive chuck of test equipment lying around
But cable manufacturers could afford this equipment, and they could use the results (perhaps a reduction in the noise floor) in their marketing materials. But they don't. Why do you suppose that is the case?


mkgus's avatar
mkgus OP
82 posts
 
OP You installed the upgraded power cable on your CD player and you heard an improvement in SQ. You did not say you "I think I heard" or "its my opinion that it sounded better". It sounded better. Period.

Yeah, it wasn’t subtle at all and I wasn’t expecting it either. I think sometimes as audiophiles we can get all excited over a new component and sometimes hear things that aren’t there because we expect there to be an improvement. This was not one of those times.

Don’t let anyone push you off the fact that you can hear a change in your system.

Don’t worry about that, I’m too far down the rabbit hole. Save yourself! After hearing the change in sound when I swapped from stranded core to solid core speaker cables, my curiosity was peaked. After that was experiencing differences in RCA cables. Then power cords. I remember when I first heard these differences, I had mixed emotions. I was happy to learn that you can tweak sound with cables but saddened because I knew if I wanted to get the most out of my system I would have to spend a lot of time (and some money) to figure out what worked best in my system. In hindsight it has been a fun, rewarding pursuit.

I don’t think power cables should be as mysterious as they are. There are a lot of good suggestions in this thread, but I have yet to see a published scientific study covering any of these ideas in depth. I agree with nonoise that it’s a possibility we just don’t yet know how or what to measure to understand certain complex phenomena in the world of audio reproduction.
jea48
2,944 posts
 
mkgus OP28 posts01-03-2019 8:44pm
I don’t think power cables should be as mysterious as they are. There are a lot of good suggestions in this thread, but I have yet to see a published scientific study covering any of these ideas in depth. I agree with nonoise that it’s a possibility we just don’t yet know how or what to measure to understand certain complex phenomena in the world of audio reproduction.
Don’t worry about that, I’m too far down the rabbit hole. Save yourself! After hearing the change in sound when I swapped from stranded core to solid core speaker cables, my curiosity was peaked. After that was experiencing differences in RCA cables.

@ mkgus


Please produce any published credible 3rd party testing results that show why, how, speaker cables and interconnects have an impact on the sound of an audio system. You can’t..... It’s just theory. No measurements, just theory. But you know they make a difference from listening to them and have accepted that they do make a difference. But you really don’t know why. So why are you hung up on why power cords make a difference? You yourself said you can hear differences.

You have yet, unless I misses the post, described the differences you hear when using an aftermarket power cord compared to a stock OEM power cord.
Please explain the differences you hear.


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