Is there any hobby where things aren't taken to an extreme?
I wanted to buy a good surge suppressor and was checking them out online. One audio forum had a guy taking apart a very expensive ($300+) surge suppressor and complaining because they used steel for terminals and the wires were not thick enough for his taste. (Note that this has nothing to do with how well it handles surges.) He was planning to replace the wire inside the suppressor with cyro treated mil spec wire and new copper terminals. He claimed he could tell the difference in the audio coming from his system. Way over the top to me. I didn't know they even make cyro treated wire.
I have a $150 refurbished home theater receiver with $99 speakers and a $99 subwoofer. I can't tell the difference between run of the mill speakers and $1000 speakers let alone the difference from power coming into the receiver.