The rule that "bigger is better" doesn't apply to fuses. The purpose of a fuse is for it to blow before something downstream does.
Using a smaller one means that you may be starving the component from getting the current it needs. It won't hurt the component itself, but it will restrain its performance.
Use the size fuse the amp designer intended.
Using a smaller one means that you may be starving the component from getting the current it needs. It won't hurt the component itself, but it will restrain its performance.
Use the size fuse the amp designer intended.