Fuse or braker for dedicated lines?

So we have 4 so far: Blake, Detlof, Redkiwi & myself who can attest to the positive attributes of appropriate fusing, yet the Doubting Thomases persist in disseminating misinformation & telling us what we can/cannot hear. Worldcup did not request opinions from those who don't even have a clue; he wants to know "what happens when" & those of us who have that experience have responded to help him. But we've heard this all before: all amps, all cables, all CD's, all (insert ___) sound the same. My take on this: all Doubting Thomases sound the same!
For those who do know but want to understand why, I cannot help you because I don't understand it myself; it makes little sense to me either. But I do know what I hear.
I'll conclude with a story about a blind test that I performed unknowingly & accidentally, if I even needed any proof this then is all that's required. Power went off at home for several hours one day when a storm was passing through, so I turned off all audio system power switches of course. I even went downstairs to pull the (then glass) fuse & decided to try "that ceramic fuse trick" that I had read about from Redkiwi. I installed that ceramic fuse & then promptly forgot all about it. I didn't power up the rig until the next day; turned everything on & was playing the tuner so I went outside to do yardwork for awhile. A few hours later I came back inside for a break & was sitting on the sofa wondering why the tuner sounded better than it had previously? The sound was richer & warmer, just more pleasant to listen to, but I didn't know why? I dismissed it to audio psychosis & returned to my tasks. But I kept hearing that nicer sound so that night I played some records & CD's, all sounding better than before. I didn't say anything to my wife about it, but the next day she was there quizzing me what had I done to the system & why did it sound better? I didn't know why, but we both agreed that something had changed & we liked it. It wasn't until several days later that I remembered the fuse change & attributed the improvements to that! Just to be sure I restored the glass fuse, but not for very long because that was the answer.

bishopwill: fact is, worldcup has been around here longer than you have. and, while he may not be quite as articulate as our newly-anointed shrink/confessor, he does have an attribute missing in your makeup: a desire to learn without the constraints of prejudice and knee-jerk naysaying. those whose opinions you ridicule are well respected for their erudition, experience and tolerance of opposing viewpoints. your latest post on this thread adds nothing of substance to this discussion. if this is the best you can do, sir, i respectfully suggest you restrain yourself before clicking on the "submit now" button. -cfb

Thanks CFB and thanks for sharing your great story with us Bob. I had cooked up a sharper reply to this sort of selfsatisfied diatripe (misspelling intended), but you have done so in a much more civilised and genteel fashion than this here old curmudgeon would have been neither able nor willing to do.
By the way, it makes sense to clean your ceramic fuses with kontak or a similar product now and again, just as you would your other connections and the fuses in your gear. At least, that's what my technician/dealer says, and he's an EE and got me to throw out the circuit breakers in the first place. Cheers,

In defense of bishopwill, I'd say his reaction is mild compared to what most engineers and physicists I know (non-audiophiles) would say upon reading this thread.

Okay, all of us know hearing is a sensitive affair. When something appears to be audible that strains credulity, maybe the thing to do is to find out what is happening (as an engineer, I firmly believe that there's science in there somewhere).
Anyone have a guess as to the reason that fuse materials affect line current, that will later be filtered at several stages before being applied to electronics? It may be hard to measure the properties of music signals but the properties of 60 Hz A/C should show up pretty easily through a well-defined set of measurements.

Flex, yes of course, you are undoubtedly right, but hearing is believing and the guy who put me on to it, was an engineer and no fool to boot, also he had nothing to earn by his idea to make me change from circuit breakers to ceramics. I won't rule out autosuggestibility on my part, but my friend is a level headed guy with a solid EE background, who by the way scoffs at all the "cable bull", as he puts it.