What direction should Hi Fi tune fuse be installed

Good point Al.

If you want to convince skeptics, some due diligence in testing process will go a long way, rather than just saying I hear it so its so.

Or we can just all go find something more productive to do.

Almarg, certainly ceteris paribus is sought in a good experiment. When I did my experiments with fuse manufacturers, I did treat all fuses with AudioTop and even tried to clean fuse holders, but many are very difficult to do this, but of course, I am holding an uncleaned fuse holder constant. I also held warm up constant as it took me about equal time to change outside fuses. Of course, listener fatigue was not considered, and I did get bored. You didn't mention that directions might vary from one component to another. I only tested on an amp, but then did some further testing on my preamp.

All of this started long before high end fuses were out. When I got my first Walker Audio turntable, he suggested that I switch the fuse direction in the motor controller. I heard an improvement one way.

You also failed to mention how you really go about this when there are multiple fuses in a component. I have sought to learn the direction from hot to neutral throughout the component. Some manufacturers know and others don't. Basically, I have given up with such components.

I dearly wish someone did an accuracy measurement between the music signal going into the component and that leaving it.

I don't think you can dismiss a difference on the basis of traditional EE laws.

It would appear the naysayers are getting ready to concede. Can't say I blame them very much. Next topic suggestion: if fuses are directional, can it possibly be true that all wire is directional? The internal wiring in speakers, the wire in a capacitor, the internal wiring in electronics, speaker cables, interconnects, house wiring. OMG! Agree, disagree? Share, share!

Of course it should be pointed out that once the trigger is pulled to get a hold of an aftermarket fuse the fun has just begun. The reason I say this is because there are so many aftermarket fuses available now, not like the old days when there was just Isoclean and HiFi Tuning. The last time I looked there was at least seven high end fuse manufactures, counting Audio Magic Super Fuse (which I happen to own), AMR, Synergistic Research, Furutech, Isoclean, Audio Horizons and Acme Audio. Have I missed any?

What this means is that the advanced audiophile, who has finally made up his mind to spring for a high end fuse, must now figure out exactly WHICH fuse to spend his hard earned cash on. What we need is some unsuspecting reviewer somewhere to stp up to the plate and evaluate all of the fuse offerings so one can make a decision. Fuses are getting to be as bad as cables. Lol

Al wrote,

"If any of those at the believer end of the spectrum wish to comment further, they may want to consider providing a description of what specific steps they took in their assessments of directionality differences to assure that the differences they heard were not the result of extraneous variables. Such as those I described in an earlier post, namely differences in contact integrity, equipment being in different states of warmup, differences in AC line voltages and noise conditions, etc. And note that I have not even mentioned until now the vagaries of aural perception."

Al, excellent point. I actually have no problem whatsoever with double blind testing, which you seem to be proposing, or any other type of test, as scientific and as thorough as you might deem necessary, to get to the bottom of this thing. Of course, having said that, I suspect that none of the naysayers will be jumping into the breech to perform any testing. It's the old pseudo skepticism thing, I guess.