In response to Al's statement earlier in this thread,
Not sure if there are any other UL listed audiophile-oriented fuses.The Audio Magic Super High Definition Beeswax fuses are indeed UL listed.......before the Audio Magicians drill tiny holes in them and pour in the beeswax. Afterwards, they are likely no longer UL listed, but for a little beeswax and an additional $170 you can rest easy that you have "Super High Definition."