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The guru on fuses:

For two years, I have asked why and how fuses could possibly matter. All I got was arguments of faith, pro or con. I needed a real audio guru who actually knows. Here is a link from John Curl’s discussion on Parasound’s website. He engineered and designed some some great equipment, including some Mark Levinson gear, The Grateful Dead’s 30 plus McIntosh amp powered Wall of Sound, and his admittedly, somewhat price compromised Parasound designs. He discusses the electrical properties of standard fuses, showing how they are compromised. The entire article is quite enlightening, but to skip to the fuse section, go to the bottom half of page 6. https://www.parasound.com/pdfs/JCinterview.pdf

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audioman58
3,896 posts
 
To simplify this ,the resistive index on a steel fuse is about 18 
copper ,silver 75,77 ,4 x less resistance it’s like a 1 inch pipe 
vs a 1/4 inch pipe the energy runs much smoother ,much
is much lower low lever distortions ,these can be seen clearly on a scope , sonicly they do improve the sound ,and each fuse is cumulative . The high end fuse has been progressing and selling 
not everyone has a tin ear and yes they can take well over 100 hours to fully settle in .that’s my opinion .everyone may have their own beliefs like religion ,take from it what you want ,the rest 
respect others beliefs . I see far too many people knocking others .
maybe they should listen to more music .
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