Without stepping on too many toes, if Romex wire is what's in the wall why wouldn't it make sense for an audiophile manufacturer just built in some ideal connectors into the back of the component that would allow a custom run of Romex from the breaker box to the back of the component. Why have an outlet or separate power cord at all?
I've often wondered if a product like Nordost Sort Kones truly make a difference why wouldn't a manufacturer of five figure pieces of equipment just include them with their gear as a "door prize"? Better yet, why not just design it right into the component since money is no object in the first place.
Audiophiles often argue that tweaks are best utilized in the most discerning systems where there is sufficient fidelity to hear small differences. I'd argue that a $400 CD player should benefit from having better supports than a $40,000 CD player because at that price those types of factors should have been part of the original design.
I think science would indicated that most of the audiophile targeted products that are advertised with pure pseudoscience are likely relying on the power of suggestion in most cases.
Do people still paint the edges of their CDs green to increase the bass?