Fuses that matter.

Actually, I am not biased, not in the sense you mean. I am actually quite objective and scientific. I have a sneaking suspicion you're not quite ready to be a member of that club.

With the resistance they measured being as low as they say it is, these fuses would most likely have the least influence on the sound as mentioned earlier in this this thread. The resistors, including those right in the audio signal path, have a measurable resistance tolerance difference (for even single resistors) alone, is a lot higher than this.

Then, if anyone can hear this minute resistance difference, what could they hear if these are used in the primary side of the power supply? The primary is 60 cycles AC. With these fuses having more more resistance in one direction, that may give some kind of problem with half of the AC cycle. This resistance difference may possibly cause it to resemble something like AC ripple, that results from using a half-wave rectifier instead of a full-wave rectifier.

That extra resistance in that one direction, of every 60 cycles, might even possibly introduce an odd new 30 cycle noise, since it is fighting more against half of the 60 cycle current flow, in that one direction. If this different value measured that can influence the sound to the point it could be heard, then possibly this new noise may be introduced by this new fuse also.

Still, after all of the possibilities I'm thinking of, I don't think this minute measured value is going to change anything we can hear, no matter where these may be used. I still discount it as too little to be heard anywhere it it is used.

Again, way too little of resistance to even think about, especially when you think all all the other components, that have a lot more resistance that varies so much more, in so many more parts. And, these parts vary a lot more than this from one amp, to another of the same brand made side by side, include matching mono-block amps. The same would go for any stereo components resistance variance, between the left and right channels.

Don't forget to consider how many times the electric traveled through this fuse, power switch, cord, house wiring, and the wire (possibly aluminum) to the transformer, its connectors, through all of the transformer's secondary wiring, and back through that little fuse again. This makes the fuse even more insignificant, if you take all of this into consideration.

Hifitimme, all of what you say maybe true, but it may be that it is "significant." Why do fuses sound different? That is the real question with which you should focus. As they sound different, what is wrong with people buying what they prefer? Would you argue that all wines differ insignificantly and that people should buy the lowest price ones?

There is nothing wrong with people buying what they want but surely nobody can object to getting the facts straight as well?

Hifitime, you make some excellent points regarding the measured resistance of the fuses. The same arguments can apply to be made to the measured noise as presented in the HI FI Tuning data. But I think this was really the point of the data - to show that the electrical characteristics, at least the two obvious ones they measured, of a fuse are not symmetrical (i.e., they are directional) and that the (very small) measured differences are NOT stufficient to account for the difference in sound, as Hi Fi Tuning is careful to point out. Essentially, you are agreeing with Hi Fi Tuning.

Next up for consideration, Things that are Too Small to have any impact on the sound. That should be fun!