Fuses do make a difference. I say again, fuses do make a difference.
For those of you arrogantly stating that we are wasting our money, get over it. I am interested in finding out which fuses work best with different fuses and every time I read a fuse thread the same know-it alls have to make themselves heard. Do you feel better after belittling a poster with a genuine desire to learn and seek guidance.
To the naysayers: if you don't think a fuse can change anything here is a challenge and it's FREE. Remove a stock fuse from a component and swap the direction when you replace it and see if you notice any difference. If you don't hear any difference then go find something else to do instead of harassing good folks here who can hear these things.
My wife and I listened to the reversal of a fuse in 6 components and we heard a change in sound on every occasion. 3 of them were the wrong way. When I got to the 5th component, my Wadia DAC I fussed at the back of the unit but did not change the fuse. My wife said she couldn't hear any difference this time, to do it again.
I tried a few different fuses in my DIY power amp and the best was a solid copper rod. I have now soldered a permanent bypass across the fuse holder. Yes that's right I am running direct. Zero fuse. Now relax, do not have a conniption, I am not advocating anyone try this. I am comfortable with my build and only have the amp on when I am in the room. It's my amp, my house and my increased joy.
In this game everything matters, including fuses. You have been challenged, are you up for it? Remember it is free. Try it and report back.