Cable/Fuse Direction Matters?

I've never bothered to reverse the many Hi-Fi Tuning fuses, scattered about my system, BUT- I don't doubt that some have discerned a difference. The element/burn wire that most of our 250V miniature(AGC/MDL/etc) fuses contain, must be drawn, like any other electrical wire. If the supposed effects of the afore mentioned internal connection impedance/capacitance should cause what some are hearing, I would not be surprised. I learned long ago; even slight improvements to a component's power supply, can yield large sonic benefits. When you get down to the basics of most gain circuits(especially- the output of a power amp); that's what you are listening to(the power supply). Happy listening!

However, I cannot see how that same reasoning can be applied to fuses

On my VAC Sig MKIIa pre, I can easily hear the Hifi Tuning Supreme fuse directions. In the wrong direction, it sounds like out of phase. Image is fat, round, no weight ... I confirmed results with several VAC pre owners.

I asked Kevin Hayes and he said in theory, due to the design of the pre, fuse should not make a difference. I try not to think too hard and just trust my ears.

I've said it before and I'll say it again. All wire is directional and if interconnects and fuse directionality are audible one supposes that somebody somewhere ought to get on the ball and ensure directionality for ALL wire and cable, including transformers, internal wiring of electronics and speakers, etc.

I agree with Knghifi in regards to the Hifi tuning brand fuses...no doubt there is a correct direction for them in all components I have tried. I have not heard those differences when changing direction of standard fuses.

Ok - after giving this some thought here's what I believe might be happening...

Since all wire is directional and as such, has a slight rectification effect...

- In one direction that effect is operating on the bottom side of the AC that is being inverted - this might add to waveform inversion distortions

- in the other direction that effect will be operating on the top side of the AC - so now both the top side and the bottom side will be distorted

It's clear that changing direction effects the waveform of the rectified signal differently which results in degraded sound in one direction and better sound in the other - as to which way is best - all you can do is try it and see what sounds best

I agree with geoffkait - manufacturers should be taking this into account.

Since this effect is not witnessed by everyone might suggest that some designs negate the effect and others do not

I think it is clear that it is probably related to components/cables/fuses and most certainly individuals ears

At least I now have an understanding based on reasoning - that alone takes the guesswork out of problem solving

Thanks to all who participated.

I do trust my ears, but it's nice to understand why :-)