Paul McGowen of PS Audio expresses his beliefs that improving fuses can lead to improved sound on his site.
It’s very well just because of this, not voodoo.
This is all fusers need to know.
All potential fusers need to remember that fuses deteriorate with age from switch on surges (as pictured).
https://i.stack.imgur.com/0uqWX.jpg
And they just need to be replaced with good quality $2 fuse of the same value, as Almarg linked to.
http://www.digikey.com/products/en/circuit-protection/fuses/139
Cheers George