SR fuses (black, blue, orange) are the only other ones I have experience with. The light blue QSAs in my transport and DAC pretty much blew away the SR blues they replaced. I suspect it will easily better the SR orange, as well, but I haven’t done that direct comparison yet. I have an SR orange in my amp currently, so I will know when I get in the next light blue to replace it.
I ordered the small batch of this today to treat the magnets first that I use and then move ahead with the rest of my contacts.
https://www.highfidelitycables.com/Nanoparticle/NPS1260.php
antigrunge - The copper replacement for the fuse has one MAJOR flaw, you still have the contact resistance of the fuse holder...