McIntosh fuse changeout to make better sound

If someone spends north of $100 on a fuse, pops it in and hears a difference I have no doubt that person is telling the truth. But that does not mean the fuse actually did anything.

All I can say is that when I make a system change I live with and at some point make a determination as to whether or not I think it sounds better. I’ve noticed with audio cables that cost above a few hundred dollars or so, price no longer determines quality or better sound any more than price makes one wine varietal taste better than another of the same varietal-- at a certain level of quality-- there’s just differences-- like the flavor notes between those wines, and you go with what you like. Is it better? To you maybe, but in truth, they're just differences, not better than or worse than.

Some people that think a $100,000 amp is always better than a say $25,000 amp because of the difference in price. They are, IMO, deluding themselves because of the general prejudice that higher cost equals higher quality-- at a certain level in almost all things, it just ain’t so. A $100 fuse is not likely any better than a $3.00 fuse. 

Tis called a blind test. You didn’t meet with rudeness your very first post was rude. Does someone have anger issues?

how do you "prove" what someone did or not hear??

My issue with a lot of the tweaks, like designer fuses, is that the prices being charged are often absurd based upon actual production costs, and the dubious (at best claims) which which rarely include any actual evidence of efficacy. Kind of like most nutritional supplements-- where if there is any hard science,  it virtually never supports the claims being made-- and as the studies pile up-- calls most of them into question. Again, placebo effects are very real, even though it's just a sugar pill.

Some of you are way overdue for a reality check.

Nightingales have no song of their own to sing, they only mimic the ones they heard.
I only listen to those who know; how the weave, got wove.