Fuses do make a difference and are simply another tuning tool. The main difference is between Ceramic and glass cases. Glass is more open sounding but brighter with it (Glass resonating?).
Ceramic fuses are cleaner sounding but can tend toward dull with the wrong make or in the wrong system. most of the so called high end fuses are ceramic so are cleaner immediatly which is nice as they can now charge more for them. however I will probably buy some because the better "high end" fuses use silver elements instead of a tin alloy and hence are more open which may offset the warmer sound of ceramics and just lift the sound slightly.
Ceramic fuses are cleaner sounding but can tend toward dull with the wrong make or in the wrong system. most of the so called high end fuses are ceramic so are cleaner immediatly which is nice as they can now charge more for them. however I will probably buy some because the better "high end" fuses use silver elements instead of a tin alloy and hence are more open which may offset the warmer sound of ceramics and just lift the sound slightly.