powercords

@boxer1. Interestingly, I haven’t really read about power cords before, though I have read a lot of threads about interconnects and speaker cables. I’m not trying to be a denier per se. If people hear a difference, they hear a difference.  But I would like to be clear that I did not say, or if I did then I misspoke, that it cannot make a difference. But I believe I said was, I don’t understand how it would make a difference.
However, I do encourage people to think critically about what they think they hear. There is massive evidence that confirmation bias is a powerful Influence on what the mind thinks it perceives.  That’s why I asked the question of how many people who heard a difference actually did a blind listening test. I think it’s frankly intellectually dishonest to assert that you don’t need to do one because “I heard what I heard “.  If you do a blind listening test with, say, 10 tries, and you correctly identify two cables nine or 10 times that is powerful evidence that you are hearing a difference.  But on the other hand, if you can’t do better than five out of 10, which is no better than simply flipping a coin and guessing, then you do need to ask yourself whether you were actually hearing a difference.

So that is my reply to speedbump. Yes all that matters is whether you hear a difference but to know that definitively you must ascertain whether you are actually hearing a difference as opposed to just thinking you hear a difference.  At the end of the day it’s your money and you can do what you want with it and that’s fine.  
Oh that said, I have no objection to trying it for myself, And I will as soon as I get my listening room finished. and I will as soon as I get my listening room finished.  Though I don’t have well trained ears and so I don’t know whether I would hear a difference from a lot of things.  

I like where this is going, and look forward to @lostinseattle follow up on his testing...I credit the dedication to do and share this

"I have no objection to trying it for myself, And I will as soon as I get my listening room finished. and I will as soon as I get my listening room finished"

Seattle,
Awesome, let us know what you think 

@lostinseattle brings up a valid point, if one can hear a difference, then "what is being changed"?
Different cable type....poses different resistance to the signal.
The thousands of feet electricity goes through outside the home do so through certain conductors, and dielectric materials used by the power company. When it enters your home, the impedance changed when the current passes through YOUR power cord (whether lamp cord or boutique).....the impedance of YOUR power cord is different from that of the power company because it uses different materials.
The resistance characteristic a cable poses when getting a signal from A to B determines how a cable sound. Of course, there are some gray areas and unknown, but one cable sounding different from another is a fact and not something made up or imagined. There are tons of cables that sound so similar that our ears can not pick up the difference, but there are some that sound quite different from one another. I feel like I have an idea.