Synergistic Red Fuse ...

I believe that the Telos,SR Black and the Beeswax are all upper tier level fuses. As with all competing top quality products the ranking hierarchy will vary due to different components and systems as well as listener taste. The Black fuses are fabulous in my system. Yet curiosity tempts me to try the Telos or a Beeswax fuse in my Line Stage just for fun of comparison. I'd likely find all three to be excellent while each one sonically different from each other. 

The cost of these fuses makes such experimentation feasible as compared to power cables, interconnects and obviously components. 
As so many contributors  to  this thread have verified,  these premium quality fuses make a considerable impact on an audio system. 

I consider myself a very strong advocate for the use of these premier fuses for their performance improvement and high value proposition. 
Charles, 

macdude ...

Ah-Ha, just as I suspected ... you haven't heard what the SR Black fuses can do. :-)

I agree exactly with your observation on the tonality of the unbroken in fuses. After swapping out the two SR Red fuses in the CD player and installing the SR Black fuses I did hear more transparency but not the overall musicality of the broken in Red fuses.  But after the SR Blacks burned in, there was no comparison. The Blacks win hands down. No contest. I'm amazed. My audiophile friends who've heard the system with both the Reds and the Blacks are amazed at the improvements afforded by the Blacks over the Reds. 

Give the SR Black fuse at least 70 hours break in. I think you'll be pleased and rewarded with the effort.

Take care ...

After 96 hours of continuous burn-in, the two fuses inside of my SACD Player is really starting to open up, much smoother and the hard upper region is Gone and I'm hearing more texture, body and subtle cues on guitars, violins and cellos...

I inserted the SRB fuse into my Integrated amp last night and done some initial fuse orientation cold right out of the box just to get a sense of the sound with zero hours; results similar to what I experienced with my CD Player but different in many ways. One direction produced a more organic sound that was upfront in imaging but very little detail. A quick flip of the fuse and things changed, soundstage drastically shifted 4-5 feet behind the plane of the speakers allowing you to hear the recording venue of the Artists.

More to follow on the Amp fuses in 4 days with the tube power supply being the next upgrade...

My default disposition is somewhat skeptical. That said, I was surprised at the difference Hifi Tuning Supremes made in my Ayre AX7e a few years back. Everything opened up, more dimensionalality with a deeper wider soundstage, more punch, more organic sound. Maybe it's my imagination but I've been convinced nonetheless and yes it strikes me as logically odd that something not in the path of sound transmission could make a difference. And never had a problem with them. 

So when I recently upgraded to the AX-5 I had no hesitation deciding to replace the fuses. Reading this thread I decided to try the SR Black, which are now on order. Will update after installed and some hours on 'em.

Frank  (Oregonpapa ),
I find myself in agreement with you often on this thread. The Black fuses definitely need more burn -in hours than the SR RED fuses for whatever reason. A few nights ago at roughly 60 hours of  use the music just bloomed  and opened up. I was listening to a very familiar Carmen McRae live recording and it all just fell into place, it was somewhat dramatic. Up to that point I was missing the musical ease and organic natureof the Red fuses. It was at this juncture where the Black fuses surpassed the terrific Red fuse. The sound based on listening last night is apparently still improving (90 hours)  A very familiar recording,  Chet Baker "The Italian Sessions " has never sounded better, just engrossing and beautiful. The Black fuses require patience. 
Charles,