but it made sense to me that a cheap fuse could be a bottleneck to good soundWhich qualified electronic technician has said this, to make sense to you??
Or was it just some c**p that came from a voodoo’ist mouth, who has not one bit of technical knowledge.
As for a fuse to become a "bottleneck" it needs to become highly resistive to such a point that it would blow with no faults.
If it’s not resistive at all, then you may as well have a piece of copper wire soldered in place of the fuse.
Cheers George