Upgrading power cord.. proven upgrade? or crap?


The thing i cannot understand is how a new high quality cable will enhance the quality of the flow of electricity that previously went into cheap house electrical wires ?

it's like saying that with good equipment u'll get a higher than CD sound from a FM stereo source or a cheap Mp3 ..

please help me understand .. :)
jinmtvt
I just tried the Shunyata Zitron Alpha HC on my Sanders Magtech and can tell no difference between it and my cheap, Groneberg.  I emailed Roger Sanders, and he says that audiophile power cords are a hoax.
Power cords made the biggest difference in my system....more than interconnect, speaker cables.
We have tested 91 power cords from $18000 down and I personally use the Core Power Technology cords that cost on average $700 per cord. I do however want to say that we are the Canadian distributor for this line and I am a dealer. My noise floor on my system dropped dramatically but resolution and dynamics increased. I no longer use any conditioning.

Cheers and just my 2 cents.