Iso Clean Fuses

I have used both Hifi tuning and Isocleans… Yes they are BOTH directional even if the argrument is made that AC(alternating current) cannot be effected by a single direction, I don't know. However after trying Isocleans they are very open, transparent and smooth, good top end extension, and solid bass when in the correct direction of course..

The weirder of the 2 is the Hifi tunings as they at first exhibited a bit of a constricted sound and slightly aenimic thinner presentation. I tried the other direction and they were a little better, but these took a solid 20 or 30 hours before true evaluation showed improvements. They definitely also sound better in one direction than the other, and do sound as good or better in some equipment than the Isocleans once opened up.

That is a good reminder about the HiFi tuning fuses- that they need a break in time . I believe your explaination about needing a break in explains the varried experiences reported on the web concerning the HiFi fuses.
David Pritchard

And just what IS the current flow direction in an AC circuit?

Back and forth 60 times a second in power supply circuits and back and forth from 20 to 20000 times a second in speaker wires. So directionality, even if it exists in wire, makes no difference.

Bob P.

Do any high-end manufacturers equip their amps, pre-amps, tuners, or cd players with these fuses? I would be interested to hear what an actual professional electronics designer for a high-end audio manufacturer has to say about these fuses. I am not interested in what a marketing company for the fuses or for a high-end manufacturer has to say. Spare me the reviews from them; they just want to sell a product. I am talking about a real electronics engineer who designs amps, etc.

I understand the reported observations from audiophiles. No one seems to understand what is going on, nor can they explain it technically -- just get a bunch of superlatives and recommendations for inserting it one way or another because there is directionality to any metal conductor.

I don't think the conductivity of metal is as directional as that of doped silicon with a voltage drop across it. By "directionality" I mean impedance is more or less with current flowing in one direction than the other through the metal. Not the mere fact that current flows one a specific direction. Maybe at radio or microwave frequencies there is directionality of electrical conduction -- perhaps due to the molecular grain. I don't know; I am not a radio or microwave frequency electronics designer. However, even 20kHz is not high frequency by any means.