What is the science behind audiophile fuses?

There were many threads on the topic of "audiophile fuses" on this forum, and I sure don't want to open old wounds and trench warfare. The fuse on my preamp blew suddenly two days ago, which prompted me to search for a replacement. That's when I came across the term "audiophile fuse" and the fact that they demand far-out prices. Deeper curiosity brought me to several other fora, where users posted glowing praises about their Zero fuses and other exotica. Now I am a scientist, but not a physicist or electrical engineer: so please enlighten me! How can a fuse have an audible influence on the signal, when the signal does not even pass through it? How can a fuse be "directional" when it deals with alternate current? I mean, if I recall my university physics, a fuse is basically a safety valve and nothing more. Am I completely missing an important point here? My scientific field is drug discovery, and because of this background I am thoroughly familiar with the power and reality of the placebo effect. I that's what I am seeing here, or is it real physics? I need objective facts and not opinions, please. I really appreciate your help!


Op congrats in that it sounds like you got a good handle on the topic.  Having seen it all here, why  one would come to this site  for science on the topic beyond what is readily available elsewhere is beyond me however.  

Nothing more to see here.  May the force be with you!

Where’s millercarbon when you need him? I can already picture him riding in on Shadowfax to defeat the dark enemies and doubters of the audiophile fuse.

the lord of the rings gifs — arwwenn: “Run, Shadowfax. Show ...

Amnesia has mercifully aided in my forgetting who that person is you mentioned immediately above.

However, I will take this moment to remember the true champion of the audiophile fuse, and while I may not have agreed with him, I much liked him.  I am speaking of a true credit to this website, Oregonpapa.


Back one money was harder to come by, when the system wasn’t flooded with it and people actually worked hard for it they were less likely to spend money on stuff like audio file fuses along with many other products. There’s so much money out there people throwing around on stuff just because they’re bored. It’s absolutely the placebo effect.

If fuses don't make any difference then why did most of the high end amp manufacturers stop using rail fuses, it's definitely not to save money.