Here’s Natural Sound’s Take
Audio systems are electrical and draw their power from the outlets in your home. Even in Boston, MA homes with dedicated direct service lines and hospital-grade outlets, noise contamination from motorized appliances and computer equipment is unavoidable. Removing this contamination while maintaining the current drawing capacity of your power conditioning system is the purpose of specialty audiophile power products. One may well wonder how, when the power wiring in your home almost certainly uses commodity 14/3 "Romex" wiring, can the last 6 feet make a difference? Turn the question around instead and ask, "How can you make your system access power that is as noise-free and unimpeded as possible?"
Investing in a fine music or home theater system is no small outlay, and no one wants to see cherished components go up in smoke as a result of a power surge. This concern has stimulated the growth of a whole product category of "surge suppressors". Unfortunately, many of these products have the unintended effect of choking the ability of your components to re-create the dynamics of live music found in your recordings.