So what's your point? Power running up to your wall plug is not perfect?If you wanted to replicate the home audio example of silver power cable you could use these rough approximate percentage lengths for power wire: 99% unshielded cable in the air, insert a step down transformer, run some wire underground for .8%, hit another step down transformer and hook it to a neighborhood full of cars, run another .199999% in cheap romex from home depot, then for that last critical .000001% use pure silver cable. Pour some wine and throw on a steely dan record and rejoice in the clarity that last bit of silver got you.
Isn't that what the pure silver power wire is for? To inject magic fairy dust into the electrons running into your equipment and clean that power feed up?