Fuses that matter.

Simply put, replacing a slow blow with a fast blow risks "nuisance" (unnecessary) blows, while replacing a fast blow with a slow blow risks extensive damage to the equipment (and conceivably even the possibility of a fire) if a fault were to occur.

A substantial change in the "nominal melting" (amps squared-seconds) parameter of a fuse, which would result from a change between fast and slow blow types, amounts to a design change in the equipment, which should not be done without careful analysis. And the information about the design that would be necessary to do that analysis will generally be unavailable to the end user.

Regards,
-- Al

Hopefully, people listen to AL in that that is really the thing that "matters" most with fuses.

How different ones in good operating condition sound is a distant second IMHO. Lots of other ways to tweak ones system without putting it at risk IMHO.

Mapman, I like the IMHO. As long as people respect the fast versus slow distinction and the amp value on the stock fuse, experimentation is perfectly safe. Why you would advocate avoiding the fuse tweak, I don't understand.

Tbg,

In general, I do not advocate people open up their expensive gear and make a tweak in the interest of better sound unless they really know what they are doing. Accidents happen, and there are many other much less risky ways to tweak for better sound. In some cases, vendors might even void a warranty if the device is opened up by anyone not authorized.

For someone who truly knows what they are doing, more power to 'ya!

Mapman, I know your concerns but most components have externally accessible fuses.