A Dilema:
Okay, so I have been slogging my way through this thread with interest. I am not a big tweeker, but the praise for upgraded fuses on this thread and elsewhere is so overwhelming, and it is such an affordable tweek, that I am considering it.
However, when I contacted the manufacturer of my preamp for some fuse value details, I got this in return:
"On ‘super’-fuses:
[Manufacturer] de-recommends using aftermarket ‘super-fuses’ whose construction varies from the standard fuse provided by [manufacturer] and their use will void the warranty.
The units are designed for use with a standard fuse and any that varies from the electrical characteristics of a standard fuse may be a risk to the equipment or user, and invalidates the safety certifications of the unit from agencies like U.L. and C.S.A.
In addition, the clearly defined laws of physics would indicate a different fuse cannot possibly (positively) affect the sound of the unit, the fuse design can only have 3 possible outcomes:
Allow the unit to operate as designed;
Starve it of current or voltage lowering its performance;
Raise the amount of current that can pass through the fuse, which would damage the unit if an internal short were to occur (but have NO effect otherwise, as an electrical circuit operating normally will only draw the amount of current the circuit uses, no matter how much might be available)."