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!

 
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What is an electrical fuse? An electrical fuse is a safety device that operates to provide protection against the overflow of current in an electrical circuit. An important component of an electrical fuse is a metal wire or strip that melts when excess current flows through it.

What is the rating of an electrical fuse? Fuse rating is the maximum current that a fuse can safely carry before it blows or melts. It is usually expressed in amps (A) or milliamps (mA). For example, a 5A fuse can handle up to 5 amps of current, while a 500mA fuse can handle up to 500 milliamps of current.

Advise 1: If you think the manufacturer has installed a fuse or given a power cord that is inferior and no good, then don't buy that piece of equipment, period. Because you deserve for the money you are spending a complete piece of gear with compatible accessories (fuses, power cords, feet, casings, etc) to get the best out of it.

Advise 2: If you really think you need to spend $$ on some expensive "audiophile fuse," whatever that is, then please make sure you stay within the same ratings as recommended by the manufacturer. Do not exceed current/voltage ratings under any circumstance.

There are those who think somehow some way, the fuse type will impact the sound quality and changing fuse will give you different flavors of sound! They also believe in Santa Clause delivering toys during Christmas, Tooth Fairy leaving $ under the pillow when their teeth fell off when they were young as well as when they get older, etc.

I tried 2 different fuses; I won’t name the brand but it was a waste of $300 however I did think the fuse is a bottle neck to a high quality power cable which is why I was willing to try them.

Last week I bought the Swiss Digital Fuse Box. Why? Because the week before I bought the Puron plug in line conditioner (both from Mark at Verfiaudio).

I was so impressed with the Puron and Mark, I trusted his word, and because the solution made sense; replace the thread of wire in the fuse with a solid tube of copper. The SD Fuse Box should kill the “audiophile” fuse business. 

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This brings me to a question I’ve considered submitting as a topic for the group:

This is an "audiophile" forum made up of individuals (in most cases) with vast experience(s) in auditioning, evaluating, and commenting on those observations. Tryiing new things (or, reworking old things) is a component of the "audiophile" experience.

The question is: "Why can’t we offer some level of respect to those who try something different, hear something good and share those results with the group? Why can’t we try to embrace those findings and give the person the benefit of the doubt that they did, in fact, hear something? Be somewhat curious about those observations even if the basis of the technology sounds somewhat weird to us?"

I get it that the "science" may push back against all that you’ve learned and/or experienced. And, some have suggested that those who claim to hear improvements in those products, technology, or catagory are biased, duped, gullible, or even need professional psychological help.

I funded a survey here a couple of months ago related to a "hot topic" on this forum. It was determined (by those who participated) that they had an 80+% high confidence level in their observations of the product catagory. Many were on their 3rd or 4th upgrade of this product catagory. Then, there were the "deniers" who rejected the premise completely and, therefore, did not try the product. And, there were those who conducted their due diligence, gave it a shot, and heard nothing. As the creator and admistrator of the survey, my final thought was that we should create a GoFundMe account for the "deniers" and send them to a place where there is a high confidence situation and let them listen to that system.

Personally, I believe that if something changes in the environment of the signal or power path, it’s going to change what happens at the other end. It’s feasible that those changes will be audibile, even it is isn’t measurable. I’m not a scientist. But, I do enjoy being proven wrong. It means I learned somthing that day.

Intellectual humility has it’s benefits. Perhaps, even better sounding systems if we’re willing to give things a try?