What direction should Hi Fi tune fuse be installed

"My question remains, what live sound are we talking about?"

Obviously, all occurrences of live sound are different.

However, I'd say our ears can become trained to recognize the patterns that emerge in live sound after many repeated listens/samples from a variety of occurrences. Then quality of matches between what is heard on a recording and what has been heard live prior can be assessed to some degree, and better matches identified over lesser ones.

This is basically how computers are trained to recognize patterns in the discipline called "machine learning". Raw data is analyzed for common occurring patterns, then matches to the patterns can be determined, although with some degree of uncertainty, which can vary from small to large, depending on how well things are done. Our brains and sensory systems were done pretty well and work similarly.

Raw data becomes cooked data once it enters your head, or at least it's refried.

Rok2id, all I can say is that you are not a scientist. Observations are what matters. As yet I know of no instrumentation that captures variations when the fuse is in one direction rather than the other. Given your dismissive attitude, you certainly would not bother to look, nor will I as I have found the proper alignment for my equipment. I have also noticed that many companies are using wired in fuses and have indeed had to replace one of these. I must also say that fuse holders are typically made out of shitty materials for carrying ac.

I'm glad I escaped engineering and remained a scientist.

I see no reason to continue to monitor this thread as the "mankind knows everything squad" attends to it.

"Raw data becomes cooked data once it enters your head, or at least it's refried."

Well, its probably to safe to say that biases exist to some degree in all cases with everyone.

COuld be too much salt, not enough garlic, a-typical hearing, listening to the same thing/stuff all the time, whatever.

Its all a very sophisticated yet imperfect process, for sure.

I tried a new $200 power cord on my DAC recently. I am pretty sure I hear a diffference, but it is quite subtle and hard to be 100% sure of, but I feel it was a good investment for teh $50 it ended up costing me.

Would I hear a fuse orientation change? Maybe first time at best (some of my fuses have never been touched since, well, forever), but I am skeptical about that even, and would be even more uncertain from there I suspect, therefore I will save myself the pain and uncertainty and just enjoy the good music until it stops being that and I have to figure out whats wrong now once again.

Wolf man wrote,

"I'm gonna reverse the direction of all the fuses in my rig, listen to it, reverse some of them, reverse the other ones, re-reverse the previously reversed ones, and then return the entire thing to its non reversed state."

I realize you're joking but the only way to do it with any chance of success is reverse the fuses one at a time and listen for a change in the sound. If the sound is judgement better for the first fuse go to next fuse. If the sound is worse put the fuse back in the way it was. If you're not sure if the sound is better or worse leave it alone and come back to it later. Continue until all fuses have been auditioned. Then repeat the whole procedure in case there were some fuses you were uncertain about. It will be much easier to hear the difference in direction the second time around.