05-16-12: AlmargI had roughly the same thought, Al. My preamp is filled with digital circuitry, so maybe I will hear benefits from one of the fancy fuses in it.
Just speculating, of course, but given that Class D amplifiers can be expected to have a significant amount of RF noise running around inside them as a result of the high speed switching processes that are going on, perhaps the material used to enclose the body of the HiFi-Tuning fuses lessens the amount of that noise that is picked up by the conductor within the fuse, compared to a glass body. Or perhaps the frequency content of the noise that is picked up is at least altered to some degree.
05-16-12: KijankiGreat, now I have to choose between experimental validity and experimental survivability. Hmm. Think. Think. Got it...
Bryon, be sure to turn OFF and UNPLUG!
05-16-12: Geoffkait
Unplugging a component from the wall and plugging it back in often results in a noticeable degradation of sound, if you're paying attention to such things, until such time as the contact between the plug and the wall socket has a chance to "reestablish" itself, which can take a few days or longer. In fact, Disturbing cables or power cords in any way should be scrupulously avoided IMO, especially during tests.
Is anyone here available this weekend to assist with my fuse swapping experiment? You do the swapping and I do the listening? Being minimally conductive is a plus, but not a necessity.
Bryon