Are all fuses created equal?


Does the quality of fuse vary for a given rating? I am asking the question in terms of the fuse's function not in terms of sonics. That is will some fuses provide better protection than others despite being the same type, say slow blow, and rated the same?
nick_sr
Update, I got my amps back from service this week, it turns out that only the led for the bias adjustment was fried. So I guess the fuses served their purpose after all.

I would also like to take this opportunity to thank Quicksilver who graciously honoured the three year warranty which had elapsed about a month before the amp failed.
Fuses sound best when mains passes from East to West.
Adjust your amps that way and listen again ...
@syntax my amps point towards the magnetic north such to align them with the earth's magnetic fields.