what does an inline fuse do
Report Abuse. the inline fuse is to protect your amp from any kind of electrical problems such as frying it an shorting it out. it has nothing to do with the peak power or anything like that.lets put it like this... powerful audio system doesnt need a fuse. All of the systems need it even if its just an 8 inch subwoofer the fuse protects your car from damage. if your amp shorts out it will probably send bad current back through the power wire.