I’m looking at the Cayin H80A hybrid integrated and it looks like it uses a 10A 125V fuse. So is there any such thing as an audiophile 125V fuse? They all look like they’re 250V.
It’s the current you’re concerned about, not the voltage. The fuse protects against over-current.
Fuses protect over-current, not over-voltage. Therefore as long as the fuse amperage is appropriate the fuse will protect the equipment.