Power cords - a BASIC question

Mcoker, many Audiogon members have successfully done just that, but it can get a bit complicated. In previous posts Albert Porter has gone into some details on the subject, and if memory serves me well, uses a dedicated ground. Fritz's question is really a matter of degree. How much can power cords help and at what price do you get diminishing returns? Many posters have had good results with some fairly inexpensive brands, so money is not the real issue. It makes sense if it works. If a listener is certain after
listening carefully that a particular power cord helps get the most out of their system, why not? It is his or her money to spend.

I have found that what I perceive as the conditioning effect of a good power cord can become too much in a long length. There definitely is value in using very thick guage and high purity copper in the wall, and other stuff that has been discussed elsewhere, but when I once tried running very long runs of high-end PC from the switch board to my amp the sound was not good.

It's a basic question that needs a basic answer. Start with going to the powersnakes website (www.powersnakes.com) and reading the faq's section. A common assumption is that the power cord is at the end of the circuit. This is not true. Power runs from hot to neutral through the load. The load is the component. The power cord is in the middle of the circuit, with the component in the very middle.
Power cords do not change sound. They provide current. If they also filter out RFI and EMI, they will give a "blacker" background to the musical signal. Thus the music can change. Each system and locality may have differing quantities of RFI/EMI thus affecting the music differently.
All RFI/EMI must be eliminated for the effect to be at it's most effective. The RFI/EMI around the wires in the walls should be small enough and is not near to IC's and speaker wires to have an effect. Contact areas between power cords and IC's and speaker wires need to be kept to a minimum.
BASICS.

Systems with digital components are more sensitive to power cables than purely analog systems. Digital components are notorious RF producers and can easily pollute the rest of a system. The filtering in power cords is probably doing more grunge suppression on the ground from the digital component than on the incoming electric power.