What is the science behind audiophile fuses?

I’m starting to think that the function of these fuses isn’t about conductance. It’s about mechanical dampening. I know someone else brought that up before. It has a silver filament and that’s it for electrical properties apparently. The ceramic tube and then the rubber tube inside that isolate and dampen the filament.

From that standpoint you are getting what you pay for. These are likely hand made and painstakingly assembled. Now, the real question is do they work? In the end you are paying for a product to provide a function. In the case of my DAC the hifi fuse helps. In the case of my amps, that is still to be determined. What I do know now is that the current factory fuse in my amp is not an electrical bottleneck or a restriction for power or sound. The copper slugs proved that- from a hearing standpoint. So will a damped and isolated fuse sound different in my amps? To be determined...

Thanks @tonywinga for your report. Really interesting.

We just had a strong thunderstorm and heavy rain blow through here.  Boy was I glad I put the fuses back in my amps.  I still unplugged everything.  We had a couple of close strikes.  

Btw- my mono bloc amps are on a dedicated circuit.  The front end is on its own dedicated circuit.  So when I put those copper slugs in, all I could think about was which will melt first, the copper slugs or the 10ga electrical line.  But everything was fine.

ceramic fuse 

Heat resistant, strong outer fuse body, usually constructed from ceramic or fibreglass. The cavity inside the fuse body is commonly filled with fine silica sand or quartz to absorb the heat and energy of an over-current.

Shrink tubing around ? the sand ? 

maybe around the body and ends if it's the pig tail type but otherwise nah .

@tonywinga 

Yes, copper slugs and thunderstorms seem like a very dangerous combination.