Synergistic Red Fuse ...

A T800 fuse is slow blow.  The thinness of the wire reflects the small 800 ma (0.8 amp) current rating of the fuse.

Also, given the reports that have been made in this thread by several people indicating that in some applications SR fuses have had to be derated somewhat to prevent them from blowing when they shouldn't (i.e., to have current ratings that are a bit higher than specified by the equipment manufacturer), it would seem prudent to choose an SR fuse rated at 1 amp, rather than 800 ma.  Both ratings provide a wide margin relative to the 20 volt-amp consumption of the DAC, but the brief current surge that may occur at turn-on could be significantly larger.

Regards,
-- Al
 

OK, so for DAC I will choose 1A instead of 800mA, what about amplifier where existing fuse it is 4A slow blow? Next value from SR it is about 5A. Do you recommend also greater value of 5A?

what about amplifier where existing fuse it is 4A slow blow? Next value from SR it is about 5A. Do you recommend also greater value of 5A?

Yes, based on a number of experiences that have been reported earlier in this thread that would seem to be a prudent thing to do.  In my opinion, from a technical standpoint there is negligible risk in doing so.  The only possible downside I can envision is that if an unrelated problem arises in the amp, and the amp is under warranty and the manufacturer becomes aware of the substitution, they could conceivably use the substitution as an excuse to not cover the cost of the repair.  But even that seems very unlikely.

Good luck.  Regards,
-- Al
 

The smokescreen of personal attacks and other nonsensical rantings only prove my point about these fraudulent products…nobody can explain the technical design aspects of "special" fuses or "magic transducing aluminum jujubes" that provide so much imaginary glee to the believers because there IS no explanation beyond plucking out terms like "Quantum Tunneling" or "Transducers," and tossing those phrases into the hype. If these things work I simply ask, again, why? How were they developed? What do SR fuses do to the electrons before they hit the circuits? I think these are reasonable questions that if asked of an amp designer or even a gear rack or speaker footer company (Or car manufacturer or wine maker) there is no hesitation to at least try to come up with reasonable technical explanations, but with this stuff it's NADA, and will likely remain so, as this is profit driven scamming at its most (or least) transparent.

nobody can explain the technical design aspects of "special" fuses ....

FWIW, I for one certainly can’t. I’ll say also that it seems to me that audio is somewhat unique in that there are countless technical variables that can be cited for which it is not readily possible to define a quantitative threshold separating what may potentially be audible in some systems from what is unquestionably insignificant. In the absence of that kind of quantitative perspective there is essentially no limit to what a perceived or claimed sonic effect can be attributed to. Or misattributed to.

Best regards,
-- Al