powercords

Many of my cable experiments were done a little over tens years ago. I was most surprised to hear how power cords made the most difference on my CD player, followed by preamp, then amp (tube and SS). At the time, I had access to cables of many different designs and these experiments were eye-opening.
I find cables to have a quantitive effect, if you like the tone of the cable, a longer length will give you more of that tone, especially the warmer sounding ones.

@scar972 , there is logic to that, though we know that doesn’t always apply in audio.... source is critical, as well as their power supplies. Amps usually have robust power supplies, though a terrible cord can surely limit them. Source tend to have smaller supplies, as well as the fact that they are the beginning....

One question that I posed actually has not been answered in this thread, which is how would a power cord make a difference? I mean theoretically speaking. Would it not have to change the characteristic of electricity between the outlet itself and the component, and if so what characteristic is it changing? 
Running a cable the entire distance between the source and the recipient, such as from the CD player to a preamp, or an amplifier and speakers is one thing. But claiming that a small bit of cable tacked on the end of miles of a different cable can change-profoundly- electricity is something else.  What exactly is being changed?

lostinseattle,
I suspect you've read about this before since you've hit pretty much every "deniers" reason why it will not make a difference in your very first audiogon post. Give a couple aftermarket power cords a try & let us know what you think. 

What exactly is being changed?

Good luck getting an answer to that question.