So done with audiophile fuses


The journey started with a medium priced ($50) fuse in my power supply.  A failed rectifier tube blew that one out.  Not a fuse problem.  Next up was a blue fuse in my pre amp.  It blew and was not caused by a pre amp problem.  Apparently they sometimes are more sensitive and it was replaced by an orange fuse two values higher.  Things were going along fine.  I replaced the pre amp with a newer version of the pre amp and it has the same fuse value.  Five months latter (today) I turn on the pre amp and nothing.  it's a five month old pre amp so I suspected that it was the fuse.  Sure enough, I replaced it with a ceramic Littelfuse of the lower correct value it works fine.  No more wasting my money on unstable fuses for me.     
goose
Curious, did you equalize volume levels using a SPL before your listening tests?
Another observation on the unwrapped SR fuse. From the image, it looks as if they applied a graphene paste to the fuse before they wrapped it in their foil backed SR sticker. Perhaps these two additions to the stock fuse is part of their proprietary process that may have some added benefit.
nwres158 posts05-20-2021 2:56pmAnother observation on the unwrapped SR fuse. From the image, it looks as if they applied a graphene paste to the fuse before they wrapped it in their foil backed SR sticker. Perhaps these two additions to the stock fuse is part of their proprietary process that may have some added benefit.


A couple observations with your statement.
Graphene is an excellent conductor. A foil decal is also a conductor. It would makes sense that either and/or both of these adjuncts could bypass the fuse filament creating a higher flow of current through the entire fuse assembly, leading the the filament to fail at it's rated amperage.

If this is indeed what is happening, I doubt a whole lot of critical engineering went into this device by the "Lead Designer".
mitch2 - I did not make sure the sound levels were exactly the same in before and after listening. Measurements and ears could sense improvement.