Alex, you have to keep in mind the enormous prestige that having "audio grade" outlets would bring to you when a visitor who happened to be an "audiophile" noticed that you cared enough about "quality" electricity to install them throughout your house.

For your further amusement, take a look at this nonsensical discussion of the "neutrality, speed, accurateness[sic], immediacy and natural timbre" to be had with this outlet .

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Enjoy the music, not the equipment.