We are now up against one of the fallacy's of the modern age. To state that someone is entitled to an opinion that can be proved wrong with 100% certainty is foolish. That is why there is so much nonsense abounding. The ancient Creeks would have had no trouble with a problem like this. A problem like this can be solved with didactic logic. The argument goes like this.
The power is generated by a turbine motor connected to an AC generator. The coils are copper and it spins at a rate to produce a 60 Hz wave form. The signal is connected in phase with other generator in the power station, and as the signal joins the grid, with lots of other turbine generators. There are numerous generators hundreds, and even thousands of miles from his home.
The AC signal is at many thousands of volts, and passes to sub stations, were transformers add some hysteresis distortion and thousands of customers add all sorts of hash to the line. The power company filters do their best to clean up the signal, but the cleansing is significantly imperfect.
From the sub station, the signal passes through many more miles of cable, shared with numerous other users, until it reaches his local street transformer. More hysteresis distortion is added plus hash from local neighbors discontinuous loads.
The AC signal now arrives at the posters house, passes though the copper wire of his meter and on to the panel and breaker, about which there is nothing special.
Now the signal passes though his standard copper house wire, and on to a standard electric receptacle.
Then the signal traverses a few feet of his "special wire" to his audio device.
This wire just passes electrons like any other conductor. Even if it had unusual conductive properties, it is less than a millionth part in the whole chain of transfer from multiple generators.
It does not end there. The signal goes though the power transformer of his device, with more hysteresis distortion. Now the signal passes through a rectifiers and is converted from AC to DC at various voltages. This pulsing DC
is smoothed by capacitors and regulated by solid state devices, and finally pronounced fit to send to power the circuit boards of his unit.
So the cable plays an infinitesimally small role in the whole process. AC cables are all of a size where even their resistance in the whole equation minute compared to house wiring etc.
So we can be 100% sure that anybody who makes a claim that the power cord is making ANY change to the sound of his device is mistaken.
Double blind testing is totally redundant and superfluous in a case like this.
No one can reasonably hold an opinion, that can be proved wrong with 100% certainty by a priori reasoning.
Posts like this show why we need to get back to teaching didactic logic in our schools and universities. The reason being, that if an individual can make a claim as absurd as the one, that states an AC power cord can improve the sound of an audio device connected to it, then their reasoning will be faulty in other areas of their lives.
Lets cut to the chase. Would you want a physician treating you for a critical illness able to make an argument like that? I hope not, but I have to tell you that unfortunately they are out there. That is why we need to formally teach logic.
