Way back when, Peter Aczel from the Audio Critic(before the 10 great audio lies)in about 1980,he suggested that speakers which has fuses, actually sounded better if you bypassed them altogether.Keep in mind, though, that fuses in speakers, and speaker protection fuses in amps, are directly in the signal path, while ac line fuses are not. Also, the current that is conducted through speaker and power amplifier fuses is both large and fluctuating, while the currents that are conducted through the ac line fuses of line level and source components are small and relatively constant. Different situations altogether.
So chalk one up for those who feel fuses do have an influence on sound.
I stuck with this mindset and replaced the speaker protection fuses in some of my amps also.
Regards,
-- Al