I have a Kismet stereo amp in a Khartago case, and the board uses four fuses, making experiments with audiophile fuses a pretty expensive proposition. I have enjoyed benefits from fuse changes in other equipment, though, and recently heard a friend's Kismet in the same chassis - pretty much the same exact configuration - and with Synergistic Research Black fuses. I caught the bug from hearing that amp, although his had been recently re-biased, so there could be some of the sonic difference from that too.
Anyway, I ordered some cheap Schurter ceramic fuses and swapped them for the stock fuses in my Kismet and heard a small but noticeable and pleasant increase in transparency and holography.
I'm curious who else on here has played with fuses in their Odyssey amps - and Kismet especially. Any suggestions for best bargain in fuse upgrades? I'm not anxious to spend $600 on four Synergistic Research Blue fuses, and likely never could justify it to myself. Much less $1000 on four Audio Magic Ultimate Beeswax fuses, of which I have a single one in my class D amp and found it to really help there.