Synergistic Red Fuse ...

I completely concur with backgroundblur's assessment of the Black fuses. So well said.

As I peck this out, I'm enjoying Bruce Cockburn's Dancing in the Dragon's Jaws AIFF CD rip. Enveloping. Stunning bass...

I don't "continue doubting" as I did a comprehensive test after doubting, and verified what I suspected: Fuses don't, and should not, do anything but pass AC through them (in both directions which is what AC does) and melt if needed when  designed properly (properly in this case means rated to a standard, which SR fuses seemingly are not). If you think you hear any sonic improvements from 'em, it's imagined or from something else, although for many it seems "imagined" is clearly enough.

Listener testimony here continues to confirm the sonic benefits of installing SR Blacks in AC mains, rails and, in my case, Maggie 3.6R tweeter and midrange signal paths.  The conducting materials in the SR's are superior to the tiny filaments in ordinary fuses.  The evidence reported here over these past months, however anecdotal, has overwhelmed the insistence of the skeptics and outright deniers that we cannot be hearing what we are reporting.  
Wolf, you just revealed how your own expectation bias worked in your system--this time against hearing SR improvements.  You say you had doubt going in and you came out with nothing, a conclusion you hold as a basis for telling us we are imagining things.  You are simply not qualified in telling anyone what they are or are not experiencing; you can be right only in terms of your own experience.     

Jafreeman, I’m sure most reasonable people will acknowledge that "expectation bias " is applicable to both positive and "negative " positions. . You can certainly be convinced that something is not possible and this adamant mindset potentially inhibits the possibility of fair and open minded assessment.

If one were to take a very strong and repeated stance that a given product offers no value or improved performance if could be quite difficult to approach this product with any degree of genuine objectivity. In this scenario the mind is already made up.

It can be difficult to step off a soapbox and admit that you were wrong. Not an impossible task but definitely not easy either. Is it possible to try these Black fuses and hear no difference? Yes. But to accuse those who do hear improvement as simply suffering from expectation bias (which is possible in some cases) the converse is just as valid for the deny campers  as well. 
Charles

Wolf,

I don't doubt that you don't hear any sonic improvements with the SR fuses, I doubt there's any product that works for everyone. I appreciate you at least gave them a try. I don't understand how you can state that the fuses can't change the sonics of our systems because all they do is pass AC through them. Couldn't the same be said of power cords and other wiring? Paul McGowan of PS Audio has articles on their site that states since the fuse is the bottleneck of the entire AC pathway its small wire which carries the current that supplies our components can have a great impact upon that current. He mentions that early design prototypes of their products didn't have fuses and sounded much better than when they added fuses for the production models. They had to re-design the production model to get it to sound like it did without fuses. Their belief is the best sound is not having a fuse ( something they obviously can't do) with audiophile fuses improving upon the necessary evil of a fuse. I think most agree that components sound better without fuses, wouldn't that suggest that fuses will have an impact on sound? Whether it's better conductivity and/or increased EFI/RFI shielding I could see where the SR fuses could improve upon the weak link in the AC pathway and therefore improving sound quality. While I don't possess the knowledge to explain how SR fuses might work I can see how they could improve the sound and I think Paul McGowan is onto something. Just my two cents worth......with inflation I probably make no cents ( or is that that sense :)