I like Brimar fuses too!According to the manual, there are supposed to be one main fuse and one unused fuse (in each power base presumably).
I bought a brimar fuse last year and was trying to swap it in, but the local dealer convinced me not to do so, claiming that the original fuse was most balanced. I may yet try again sometime later.
No, I don't care about the waranty. I swapped in a brimar fuse for my dago momentum s250 earlier, and it sounds glorious.
Cheers
BTW that Select DAC owner friend warned me that opening the Powerbase for fuse change was easy, but never to open the DAC chassis.
It's because the r2r modules inside can be dislodged easily.