Synergistic Red Fuse ...

Hi Sns,
When I was using the Red fuses I had one blow when powering on one of my Frankenstein mono blocks. The past year I've used  the Black fuses in my Line Stage, DAC and mono blocks without any problems. 

You have two well regarded 845 SET  amplifiers, how do they differ sonically from one another?
Charles 

I’m using a SR Black large15A slo-blo in my Hegel H30 and never had a failure. Since SR doesn’t offer a large 7A slo-blo, using 6.3A SR Black in ARC Ref250SE and zero failures. According to the spec, each mono can draw up to 10A instantaneously.

I’ve replaced all SR Reds with Blacks and cycled through Hifi-Tuning, Isoclean, Audio Magic ... and never had a failure.

I had generic fuse failures with several boutique components. Every time the manufacturer suggests using a larger size so I’m always suspicious of their specifications, tolerance and design.

PM me if anyone interested in SR RED large slo-blo 15A and 6.3A (2 available). Also Isoclean large 7A slo-blo (2 available) :-):-)

Charles,
You have a very nice setup, all Coincident equipment is major bang for the buck.
The Carissa is modded to some degree, Coincident stock. The Coincident is higher resolution and more dynamic, tonality in my setup spot on, great amp. I've thought about changing out the coupling caps in the Coincident to Jupiter, which I did in Carissa, but things are too nice as is. I'm not even sure I heard that much improvement with the SR fuses in, but then they never lasted long enough to properly ascertain.  I only use the Turbo in direct mode (bypassing input switching and volume pot), coloration and some loss of transparency using as preamp.
I'm also in the midst of trying a variety of fuses in Turbo. The Radio Shack 6.3a are robust and have good sound quality, prefer them to other generic glass bodied fuses (6.3a is the stock value, and what came with amp). I tried the Schurter SMD-SPT's as well, the 6.3a has blown after a number of start ups. The 8a has yet to blow. I prefer the Radio Shack to these, Schurter has a flatter, more recessed soundstage, perhaps a touch more rolled off on top. Today I'm going to try AMR 8a. I also have some Bussman ceramic bodied, some generic ceramic bodied and other generic glass bodied to try. At this point I've given up using the SR fuses in the Turbo and Carissa. The large reservoir capacitors in 845 power supplies require too much current for too long , the SR fuses can't handle it. I would like to hear of someone successfully using boutique fuses in a 845 amp.  A soft start circuit would likely solve this problem, but perhaps negatively affect sound quality (the old straight wire issue).

I’m highly tempted to try the Black fuses now that they’re $85 each but am a little reluctant because the Red fuses did nothing on my Magnepan 1.7i’s.

Limniscate,
Some listeners don’t hear any(or little) difference with the premium fuses. The Reds were beneficial in my case and the Blacks were noticeably better. If you find that their effect is minimal just return them for a refund. What’s works for me may not do the same for you.

Sns,
Thank you for your reply. I use the Jupiter Copper foil capacitors (input coupling stage) in my Frankenstein amplifier and I am happy with them. They are not a dramatic (night/day) transformation but certainly improved the sound enough to make the effort worthwhile. I imagine that they’d have similar impact with your Turbo amplifier.
Different application but I got a more significant change with the Duelund CAST capacitors placed in my DAC  (output coupling site) and in my speaker's crossover at the tweeter. 
Charles