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I don't think the powercord....

Posted by Pacman (A) on April 23, 2007 at 17:39:56

In Reply to: Thank you posted by Robert C. Lang on April 23, 2007 at 10:48:41:

is going to make much difference as to the "hash" that comes from the power company. I think you are going to have to go to a power management/filtering system like the PS audio products to make much of a difference. Balanced power can also greatly help as was mentioned by a previous poster.

However, there is a relatively strong magnetic field that may form near a power cord as a function of RF interference, particularly one that feeds a high current piece of equipment like a power amp or flat screen TV. All of your equipment also generates some radiated RF interference that can be picked up by a cheaper powercord and input into another component. CRT TVs are especially bad offenders. I expect some tube power amps may emit a surprising amount of RF radiation as well. This is the "hash" referred to by other posters that is picked up by cheap powercords. The effect can range from nonexistent to very obvious depending on how susceptible your equipment may be to that RF interference. High quality well-shielded powercords can make a huge difference if you have this problem

The PS audio Power Plant measures deviations in harmonic distortion of the electical signal from the power company as do several other power management products. But I'll tell you that same thing you would tell me. The only thing you should trust is your ears. Try a higher quality powercord on some of your components and see if it results in an improvement. I'd do the power amp first but others may disagree. In reading reviews of high-end stereo equipmnent, it is clear that many designers worry greatly about cleaning up the power. We should as well.

The "last four feet" argument is commonly espoused but it is irrelevant. The effect of the radiated RF interference from both components and powercords greatly decreases with distance to the electronic components, so it is the four feet closest to the component that really matters.

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