Fuses fuses fuses

The integrity of the electrical path is very important. For example, a properly bedded fuse sounds better than a breaker; but a breaker is capable of breaking more than one line at a time, even if a fault is detected on only one line. This can be vitally important with +/- power supplies.

While I think it is possible that exotic fuses sound different, nothing in physical theory tells me that fuses should have directionality. I doubt that anyone has done a scientific, double blind study of directionality, while controlling all the ways that the human mind can find to deceive itself. Until such time, I am skeptical of the assertion that fuses have directionality.

I will certainly not pay for anything which is unlikely to make a difference according to physical theory, and which has no support in experimental evidence. There are many ways to spend 6 figures and get a demonstrable improvement at every turn. That's my path. YMMV

Hello Terry9,
Deception can of course work in both directions (pun intended). One can convince themselves they hear something that may or may not exist. Conversely one can convince themselves that there can’t possibly be a difference to hear based on any manner of preconceived notions. Science is indeed wonderful but is "still" woeful" in explaining the very complex human hearing mechanism/pathways. What the ear can detect is far ahead and of what man can currently measure and quantify. We’ll get there one day.
Charles

Charles, a hundred years of experimental psychology has evolved very strong paradigms for dealing with experimenter bias, subject bias, and confounding factors. It is easy for those with expertise in engineering or mathematics to dismiss these advances, but that would be a mistake. The experimental tools are there.

These tools can be used to demonstrate heretofore unsuspected effects. Doing so is good for careers. The absence of an effect which can be repeated in the lab is evidence against the existence of that effect. Not proof. Just evidence.

I find Ralph's explanation of the phenomenon to be convincing. And it would be very easy to test. Anyone who wanted to bother only needs to repeat the experiment many times with randomization, and count. I suggest a paradigm known as 'two alternative forced choice'. Elementary statistics would do the rest.

As I said before, there's lots of places to park money in this hobby, lots of places where everyone agrees. That's where I spend money.

Terry9
I found Ralph’s explanation of the phenomenon to be convincing. And it would be very easy to test. Anyone who wanted to bother only needs to repeat the experiment many times with randomization, and count. I suggest a paradigm known as ’two alternative forced choice’. Elementary statistics would do the rest.

OK, so if it would be "very easy to test" how come none of you guys ever bother to test it? Talk is cheap. And if it takes a test to prove directionality how come you guys have made up your minds already? Who do you think is going to test it, NASA? Besides I’ve got a sneaking suspicion you guys would not believe or would find fault with any test and or test results presented to you, as long as the results were not in accordance with your preconceived notions of time and space - Just as you guys have with the test results of fuse directionality found in the data sheets on the HiFi Tuning website. Yeah, I know what you’re thinking, what test results? Right? You guys always seem to find some little nit to pick when the results don’t comport with your preconceived worldview. East is east and west is west and never the twain shall meet.

"East is east and west is west and never the twain shall meet" Geoff, well stated and true. Terry9 I can tell you that the upgrade fuses are clearly effective in my system. However you’d likely remain skeptical based on your own inherent bias and preformed opinion. I understand that and it’s okay with me. East vs west 😊. I will agree with you regarding spending money where you believe it’s appropriate and justified. That’s what I did and am very pleased. This criteria will naturally vary amongst us all. If we're both satisfied with our respective audio systems, all is good in the final analysis. 
Charles