Swiss Digital Fuse Box, the fuse reinvented

I got my fourth one in and in place. There is a positive cumulative effect with these. … . Glad I got four, don’t think I can get more as I have run out of places to rob an identical power cable to make the pair going to a component. The only other place I can put one is my transport. . . .

As for a first resting place for one of the SDFB. . . I started with the P15 regenerator because I guessed and had a gut feel that it would influence all the other components. I certainly did find an impact immediately. I then put one second on the amplifier and had a similar immediate improvement “feeling.” I think either of those two components would be a good starting point. The other two additions (to the DAC and to my Decware ZROCK2 gain and EQ tubed device, today) were not quite as drastic an improvement but were improvements.

Almost as good as adding more was moving to the Graphene Sluggos from any of the other Sluggos. Each has their own “flavor” and “feel” but the Graphene seems to just stand above the others in giving a bit more dynamics, a bit more soundstage depth, and a general feel of smoothness in a good way, ease to the sound.

Great to hear people are continuing to get improvements adding more SDFB’s.

Am I right in thinking that the Graphene Sluggo is a pure copper base with the special treatment to apply the Graphene to the surface?

Do you think using a pure silver base with the Graphene surface treatment would be another step up?

It does seem as if the Graphene is a coating over a copper base–not sure if it is the same Sluggo base as the High Purity Copper that Verafi sells, but that would make sense.

All I know is that a silver base may make a subtle difference. Love what the present Graphene Sluggo does.

Hoping someone could help…

I have a 5A SWDFB on my P15 regenerator and a 12.5A SDFB on my Gryphon Diablo 300 integrated. The boxes show a solid green light but as soon as I power on the Diablo the SDFB on the P15 trips. If I run the P15 with a standard fuse everything works fine. Wondering why when on a SDFB for the p15 the Diablo causes it to trip.

I don’t think a SWDFB installed in front of a power plant can function properly. The fuse in the power plant is only for the power plant’s internal protection. The thermal fuse, which in my P10 was a 10 A fuse, actually protects the power plant’s sockets. For it to work, a fuse inside the power plant would have to be replaced. This would require opening the power plant and installing a different fuse instead of the glass fuse. The warranty, approval, and safety are likely no longer guaranteed due to such structural changes. By installing the SWDFB in the supply cable, you reduce the maximum total current output of all sockets to the value of the SWDFB.

The SDFB works perfectly for me on my P15.

Are you also running a power amp or integrated on you P15?

Yes. I am running a Decware SEWE300B integrated amplifier. And also a DSD Mk II, a PWT SACD, a NuWave Phono Converter, a Rega Neo II, Rega RP3, and a Decware ZROCK3. The amp, DAC and ZROCK3 are also each connected to an SDFB.

Are any of them over 5A?

No

I think this is what @Stier2704 is referring to. If you put SDFB on P15 and add a component to the P15 (standard fuse or SDFB) that is over 5A draw it will trigger the SDFB on the P15 to shut down. That’s the problem I’m having.

I would reach out to Verafi Audio for their viewpoint. I’m not at all certain what the problem may be, they may have an idea.

Yes. I’m currently working with them. Was asking here to see if anyone else experienced this problem

Ditto. (w/ my P10)

It sounds like your SDFB might need calibrating.

Trying to figure that out. The big question is if there is anyone using a device that is higher than 5A on the P15 when the p15 is using a SDFB.

When I run my P15 on a SDFB with DAC, streamer, phono, network switch (which all have SDFB) everything is fine. I only run into an issue when a component (rated higher than 5A) gets plugged into the p15. That’s when the SDFB on the P15 trips. Otherwise it’s fine.

It’s simple physics, electronics, and math. If a 5-ampere fuse is used in the PS15’s power cable, the PS15’s output power is reduced to 5 amps minus the PS15’s current consumption. If you now connect a total load exceeding 5 amps to your PS15, the fuse in the PS15’s power cable will blow.

If that’s the case why does a regular fuse work fine?

The small fuse in the PS10, PS15, and PS20 only protects the mains filter. The main power supply is protected by a thermal fuse. On my P10, it was a small round button that could be released if the fuse tripped. The P10 contained a 10 A fuse. A fuse in the supply line cannot function properly for such a power station. If you require a small load, it will still work.

What I’m asking is why does the P15 function fine with a regular 5A fuse when the Diablo 300 is connected to it but not when I change the regular 5a fuse to a 5a SDFB.

That’s what I’m trying to understand.