I swear I should get into the tweak industry.
Going to the root of the site, they're located about 10 minutes from me in Falls Church, VA. Check out their "ultra tweeters" (GHz band ... hahahahahhahahahahaha) and "magic rings."
What absolutely kills me is that the people who push these things and "swear by them" seem to be completely unwilling to submit themselves to an ABX test to verify what they think they're hearing.