Dont think this has been posted:
Studies On Residential Power Line Noise - Part 7: HiFi Tuning and Isoclean Fuses[Review] Studies On Residential Power Line Noise - Part 7: HiFi Tuning and Isoclean Fuses - Club Polk
For the record Ive tried quite a few different fuses in various components and there is a definite audible change but it usually quite subtle and is different for each component.
And sometimes the stock fuse sounds the best.
If you don't want to go into the audiophile fuses then USA made Bussman ceramics are a good general fuse. With standard fuses, ceramics generally sound better.
One tweak I also do with all fuses which also makes a difference:
*With an empty fuse holder:
*Clean the fuse holder contacts with caig or isopropyl alcohol
*tension the fuse holder so it presses in with more force
*use Quicksilver gold on the contacts
*clean the fuse ends
*insert the fuses
*put a small section of 1" heatshrink around the fuse holder and heat shrink it on so it tightens around the fuse holder clenching the arms in with force and sealing in the top of the holder/fuse.
This makes a tight grip which puts constand pressure holding the fuse in tighter. Over a few days the Quicksilver gold hardens and the result is increased 'solidness' to the sound.