Is fuse directionality audibly discernible as well ?It most certainly is.
I knew that swapping out bog standard fuses for better made ones made a difference but it wasn't until a year and a half after changing fuses and out of boredom, that I tried changing directions only to discover that it does make a difference.
In my short fuse journey It tried it with various, mid level priced fuses and the results were all the same: it made a difference.
All the best,
Nonoise