Right. It does help to understand where people are coming from. It also helps to try and understand what the heck they are saying. Lost wrote a long one, that someone thinks is good, in spite of the fact the whole thing has already been answered. The conclusion:
I still don’t see how an expensive power cable is going to make any difference to what comes out of a well-designed, high end power regenerator like the PS Audio.
Was answered back on page one of this thread:
Because nothing ever is perfect. Obviously. So no matter how good a conditioner, regenerator, or power supply, until and unless it is perfect then it will always matter what is done upstream.
The power cord coming into the regenerator will matter for the simple reason the regenerator converts the AC to DC and back to AC in real time. As long as it works this way then there will always be some ripple or artifact from the original power source. The only way to avoid this is to use AC to charge a battery, disconnect the battery from AC, and run the system off battery power.
Anything else, any scheme whatsoever that relies on the unit remaining connected to AC will always inevitably pass some amount of that AC variance on to its output.
I won’t spell it out because it does no good. People either understand plain English or they do not. This happens because no power supply regenerator or otherwise is perfect.