No discussion about the Synergistic Pink fuse?

@tonywinga Cool, and sadly expensive, that you were able to dissect a couple of tubes.  

It would be nice if the filament were some highly conductive audiophile wire, but generally it has to be something with a low melting point, like lead and tin.

If anyone has an audiophile fuse that is blown and they want to donate it to science, send it to me, I will dissect it and try to test the filament by spectroscopy to see what metal it is.  I will also try to measure it, I have an optical micrometer.

Jerry

……when they do make the rainbow fuse, I hope that they indicate which direction you put it in.  

@captaindidactic  Your report that bypsass (putting a jumper or slug in) resulted in much better sound is totally consistent with my experience.  

I don't think audiophile fuses can ever approach the performance of a jumper.  Fuses have to blow and to blow they have to have a significant resistance and low melting point.   Jumpers don't have to blow. 

The real answer is replace your fuse with a breaker, thus the SDFB which will outperform any audiophile fuse.

Jerry

carlsbad2, I know.  The first rule of hifi fuses:  You blow ‘em you’ve bought ‘em.  When I get a chance, I’ll look to see if I still have one my blown fuses lying around.  Destructive testing is my favorite.,

Btw- I didn’t hear a difference with hifi fuses in my amps but a hifi fuse in my previous DAC made a difference.

Carlsbad2, I used a slug. Next time it will be a jumper, maybe silver. The funny thing is that although their were immediate changes, they were subtle. What really shocked me was that after about two weeks of heavy play, all of a sudden my bass increased pretty dramatically. I didn't purchase fuses because each of my NAD 2600 amps took 6. The cost of the fuses would have exceeded the cost of the unit! 

I am now running a Lumin T2 streamer with a Master fuse and a McIntosh 12000 integrated with a purple fuse. The Master fuse in the Lumin really helped the soundstage expand. The purple.... not so sure.