Is $2,844 too much to pay for a fuse?

No.  I think it is cheap.

You should buy it by the pound :-)

Just got in a second light blue fuse for my DAC. So far, more of the same improvements I got in my CD transport. Very nice!😃 One thing I appreciate is the break in seems to be pretty quick, without any of the nasties you get with some other stuff. Pop it in, and you’ll hear improvements in short order, at least that’s been my experience.

The next one for my amp will be on its way as soon as Tweek Geek gets their next shipment. Can’t wait!

@tommylion  Does it compare at all to other fuses you’ve tried?

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