I'm having a really hard time with: "Power cable reduced my soundstage"...


My good friend that is in the business and very very knowledgeable calmed that a well made 10ga power cable reduced his soundstage... I'm not saying it will or won't but why would it? I would like to know the science behind this. I did research on here but not satisfied. I had a pair of Logans and they were wonderful and I used stock power cables and the stage was crazy... I have been making cables for years ( musician ) and know the value on quality... what is the magic?
128x128captbeaver
My system is being set up to be as simple as possiable...

CD
Mac Pre
Parasound A21
Aerial Acoustics 10T’s

done

I dont want ANYTHING i need a manual to program! Period.

My guitar rig is a Two Rock 22 Watt amp. Simple and well made.

I am making the power cables for my pre and amp... 
@captbeaver and @whostolethebatmobile. You had me at hello. Anyone looked at Madscientist cables? They fly under the radar, which intrigues me further. Yeah they have some Voodoo stuff going on, but it seems to work based on reviews and I’m interested. And they're relatively cheap.  Any thoughts?

https://www.soundstageaccess.com/index.php/equipment-reviews/769-mad-scientist-audio-heretical-analo....
I have gone thru a few speaker cable rotations and with the power cable I cant hear a change... 

Everything connected to one’s audio system matters. Truth deniers can be discontent.

And OP: knowing the science or magic will help you appreciate your system that much more? I doubt it.