We Need A Separate Forum for Fuses

The wire in a fuse is orders of magnitude thinner than a speaker cable with proportionally greater resistance. Go figure! In this hobby it’s often the case what you believe has very little to do with it. I have used hi end fuses in the past but now currently as I’m listening off the grid, which completely avoids any issue fuses may or may not have such as distortion and noise, not to mention noise and distortion from the house AC.

“If thy eye offend thee cut it out.” - old audiophile axiom

Question 1, I don’t know.
Question 2, No (hence, the answer to question 1)

I probably won’t try them either. There are too many other items that impact sound quality in my opinion, than fuses.

geoffkait - last time I tested a fuse for resistance, I think the value on my meter was 0.000 ohms.

Seriously though, if there was a resistance in your fuse, there would be a voltage drop accross it, which would adversly affect your equipment and comprimise it’s design.

Fuses are designed to only dissipate heat (and therefore present a resistance) very close to the point of failure. If your fuse is presenting a resistance it must be dissipating heat to some extent, which will lower the voltage accross it, which will be measurable with a meter (however good). If this was the case, then I would suggest using a slightly higher rate fuse e.g. swapping a 2.5amp for a 3amp

Either way, any fuse operating that close to it’s limit would blow with the least provocation; i.e. powering up the amplifier would blow it.