One of our good customers has started a blog which he calls
A GUIDE FOR THE BUDDING ANALOG AUDIOPHILE
Below is a link to a comparison Robert Brook carried out with a some power cords he had on hand. I did the same thing about fifteen years ago and it taught me a lot. Please read his commentary. The experience he went through is instructive and easily replicated by anyone for any system. The benefits are likely to be substantial, maybe even life-changing!