I am the 'other' collegue to Checkmate110. I am intrigued to hear both sides of the discussion but I am yet to be convinced by the pros of the PC. I am no expert when it comes to electrical wiring but I understand the basics of inductance and agree with Checkmate 110 that having a shorter length of house wiring from the transformer to the wall socket would have a much greater impact than purchasing a short length of expensive "jewellery" (considering what many of the high end cables are made of).
From my point of view a power conditioner or separate power supply would be of benefit because you are changing the quality of the AC supply after the wall socket, but I find it very difficult to believe that a power cord can change that much since it is just permitting the same AC supply to pass through it to the connected component. However, if the electrical transformer was connected with the same wiring as what is in the after-market power cord all the way through the hifi component, yes you would have more of an arguement than what is being presented.
From my point of view a power conditioner or separate power supply would be of benefit because you are changing the quality of the AC supply after the wall socket, but I find it very difficult to believe that a power cord can change that much since it is just permitting the same AC supply to pass through it to the connected component. However, if the electrical transformer was connected with the same wiring as what is in the after-market power cord all the way through the hifi component, yes you would have more of an arguement than what is being presented.