Just ordered some circuit breakers to adapt to replace fuses in IEC connectors.  I'll bring it to market for much less than $400.

Jerry

I placed an order for a fusebox. It'll be here next week.I also got an adaptor to plug it directly into the back of the amp with the intent of eliminating a second PC. I have a couple of extra PC's so I can AB with a cord or just the adaptor.

I purchased and am using 3 Swiss fuses from Mark at Verafi Audio

My system includes:
-2 coincident technology Frankenstein mk3 tube mono amps with EML XLS 300b’s driving Lii audio origin 10’s
- for a dash of extra bass augmentation, a pair of rythmik 400 watt plate amps driving four 15 inch open baffle drivers which beautifully augment the origin 10’s.
-a netgear GS108Ev3 switch (many recent positive audio reviews for this low cost switch)
- newest blusound node with a teddy pardo power supply.
- holo spring 3 kte,
- hornshoppe truth pre.  
- Note I also very recently purchased $80 Fosi x4 tube phono pre that I think punches way above its weight. It can also accept dac input so have tried it as a pre bypassing the solid state hornshoppe truth.  I love cheap toys that can flavour a system to advantage.

Spoiler alert… I recommend any of you looking for a high value to cost upgrade to contact mark at verafi audio (he was an absolute pleasure to deal with) and test this product risk free in your own systems.

I heard about the Swiss fuse from groovysauce and had a number of interactions with him before contacting mark. My call with mark came immediately after being frauded by an audiogon member who sold me a faulty, visually burnt orange SR, whose ad picture showed only the non burned side of the fuse!!

So glad now that the orange didn’t work out.  Why spend a bunch on a fuse that is destroyed if overdriven, vs one which simply needs to be reset… and sounds better?

1) The effects of the fuses being installed into my rythmiks amps (1 fuse covers both rythmik amps) was greater dynamics, bass slam and bass quality.  Bass notes just started and stopped, very very fast and it sounded like headroom has improved.  At the end of this review, I will share a review link where someone else mentions that these Swiss fuses sound like headroom has been added to your amps. I wholeheartedly agree.  I listen in our large finished basement.  My wife is often upstairs making puzzles while I am listening downstairs. I asked how she was enjoying the sound as I was moving through some of Steve’s latest recommended audio titles (including infected mushrooms).  She said it sounded great but that she had to close both the front and back door cause both screen doors were rattling. Yeah, that had never happened before.

2) My only experience with upgraded fuses prior to the Swiss was an sr red that came with my holo spring 3. I took one of the Swiss fuses and fronted 3 components - my teddy pardo, my hornshoppe pre and my holo dac with it. Loved it, better than my sr red in the holo dac relaxing the sound.

3) I took the other Swiss fuse and fronted both of my Frankenstein 300b amps. Good, but I preferred the sound with each amp direct to a power outlet so had to give up the teddy pardo, holo and hornshoppe pre configuration.

The changes across the frequency range were audible enough that I took the origin 10’s out of the chain, and rehooked up a pair of reference silver iris mid/tweeters that are installed midway between my 15 inch drivers on my 5 foot open baffle towers.  I had always found the reference silver iris’s less transparent than the origin 10’s, but found that I really enjoyed them with the Swiss fuses added to the system. These system configuration changes that were not initially planned (together with some needed surgery) kept me from completing this review in a timely fashion.

Bottom line, these fuses are a no brainer, whether brass or copper sluggos.  I soaked my rough sluggos in vinegar to shine them up a bit… then in water and baking soda to stop the acidic process. I am eager to try other metals if mark or other customers hear sonic differences.

Mark, as mentioned was a pleasure to deal with.

Here is the other thread I wanted to share where the person doing the review references the sense of increased headroom.

https://tinyurl.com/mvbaj9va

John

Tony wrote on 05/13/23 at 14:42:28:

Tony: try this link:

https://tinyurl.com/mvbaj9va

Thanks for sharing. I almost feel that I need to experience the impact of Synergistic fuses first before I can truly appreciate what the fuse box brings to the table.

This reminds me, haven’t seen GroovySauce active recently?

I would think it's the fuse in the IEC receptacle that would be replaced.

Check the label underneath the amp. Steve puts the fuse size there. If it's not there, you can download the owners manual from the order page.

HK

John, great write up! I'm glad you are experiencing an improvement!

JP, Lon is correct, replace the IEC fuse. The other fuses protect your amp incase of something failing like a tube.

Kamran, I would save for a FUSEBOX and skip the fuse.

I got a shipping notice that some new Sluggos are on their way to me. I'm going to be traveling so won't have an update on the different metals until June.

I received a package which contained two baggies. Sluggo A and Sluggo B. I was out of town for awhile. Upon returning I put in the Sluggo A, meaning I didn't have a good reference between the solid copper and the new Sluggo. I've been listening to the system with Sluggo A in for a week now. Today I put in the Sluggo B. I'm going to give it a week of play before I swap to Sluggo A and the solid copper Sluggo.

The only thing I know about the A and B is "One is Solid Brass with the Gold Immersion and one is Solid High Purity Copper with the same Gold Immersion".

I'll update again once I have a solid report.

Curious: considering there is a need for an extra PC, how imp. Is it for both PC’s to be audiophile grade vs. having your good one connected to the source/amp and the other end use a standard one connected to the power supply? Having both PC’s of good quality per component raises the bar a bit. Not necessarily a showstopper-just something to consider when budgeting.

Kamran,

Both sides of the FUSE BOX the PC is equally important.

Is the lesser PC better than the fuse being replaced with the Sluggo? That is the question.

In my case the PCs are significantly more money than the FUSE BOX.

HK, looking forward to your impressions.

Intriguing. . .hinting of promise.

I just installed Mark’s new copper Super sluggos with the gold immersion.

As a reminder I am running:
- newest blusound node with teddy pardo power supply
- spring 3 kte holo dac
- Fosi or hornshoppe truth pre
- 2 ultra transparent coincident technologies Set Frankenstein monoblocks with EML XLS 300b’s driving Lii Audio S-10 silver mains
- 2 rhythmic 400 watt amps driving four 15 inch hawthorne Augie bass drivers in open baffle panels

I now have 6 copper SUPER sluggo’s in the system - 2 in rythmik amps, 2 in Frankenstein amps, 1 in holo dac, 1 in teddy pardo power supply.

One song was all it took to hear a difference that I wanted to share, the song was Anette Askvik - Liberty.

Unlike what Meghan Trainor tells you, it’s not all about the bass… or the midrange, or the treble.

It’s about the overall musical experience. Space in the soundstage, a more captivating, real, and enjoyable listening experience - voice, breath, piano, cello, and a stark reminder that a saxophone is an instrument with a woody vibrating reed at its core, that can create palpable vibrations in your chest and your mind.

Imho, these new sluggos, in similar fashion to my experience with the original Swiss fuse devices, are another step up, and a no brainer as I seek out more great music to enjoy them with.

Well done Mark, and thanks Groovysauce and this forum for bringing them to my attention.

Thanks for the impressions HK. It's great that so far I've only seen positive reviews of these devices. Certainly intriguing.

My SEWE300B is in "Quality Control" now. Steve let me know that he can't incorporate a "Treble Cut Circuit" and i'm hoping for the best--that is a necessary thing with my SE84UFO3 Monoblocks in the main system. If the SEWE400B ends up being my amp of choice (don't think I can keep both of these amplification centers just to have one sit in a closet as a backup). . . then I have to think of "fuses." I'm loving the Audio Magic M-1 but I'd need 2. The Swiss Digital Fuse Box would be a bit cheaper and may be better (?) . . . . Things to ponder, a good deep first world problem.

Hi Lon,

I was trying to follow your comments, and I am unsure if I read correctly - are you suggesting that Sarah's potential "hum" might be managed using the Swiss Digital Fuse Box?

After additional listening sessions with the fuse box set up on my Modwright modified Cambridge Audio CXN V2 streaming music via Qobuz with Roon I can state that this product is a real deal game changer!

With my tube noise and Roon issues sorted, and the supplied pigtail power cord fully settled in, my system has never produced such realistic sounding playback. I thought I had a very low noise floor previously, but now it's simply non-existent. Clarity, density and detail retrieval is simply amazing. The end result is a level of realism in music reproduction that I've never heard before in any system, periiod!

Does my system have weaknesses, sure. The Lii 15 magnum open baffles aren't really full range, so I'm missing some some bottom end and I'd prefer a full loom of Snake River Audio cabling (but it's pricey). These issues however pale in comparison with the level of emotional involvement I'm now enjoying with each new song in the Room que.

The fuse box has performed flawlessly, but I haven't experienced any power surges or outages at this point. Time will tell if it trips the fuse box and protects the CXN V2 properly. I haven't read of any issues on forums regarding this potential failure.

The only potential downside I see is whether use of the fuse box may void your equipment warranty. It's an issue of particular concern with Decware given their lifetime warranty. For me trying it out on my CNX V2 seemed worth it and so far so good.

Thanks to GroovySauce for bringing this product to the attention of the Decware Forum. It's proven to be one of the most soul satisfying additions to my musical enjoyment. My toes can't stop tapping😊.

Of note, each digital fuse box requires setting the right amperage based on your equipment specifications, just as a fuse. VeraFi Audio does offer a relatively inexpensive fee to reset the fuse box to a different setting, if you want to use it on a different piece of equipment.

HK

I would like to echo Groovy Sauce and HK's positive experience with the SDFB. I installed one in my Dennis Had Inspire LP-2 preamp, and the change was truly jaw-dropping. The preamp was very quiet before, now it is absolutely silent - I can place my ear on my drivers and not hear even a whisper of noise. The music has so much more PRAT and is so much more tonally dense. Everything just sounds "right". I am ordering more for my other components.
Also, I would like to mention that Mark and Lynn are two of the nicest people I've met in 30+ years of this audio hobby.  They go out of their way to provide the most amazing customer service I have ever experienced - they truly do what they do to help people like us get those next few steps closer to the absolute truth in audio reproduction. If they sold ab broader range of things, I would go out of my way to buy everything from them. With the trial period, you really have nothing to lose other than the return shipping, if you're the first to not be amazed with the SDFB (they've not had a single unit returned to-date).
Just thought I'd share my very positive experience in the hopes it helps others on this forum.
Chris

Kamran,

I've been wondering the same thing myself. One of my audio buddies and I have been talking about getting SDFBs, and we were thinking the source or the dac would be the place to start, but maybe not. I think a call to Mark would probably yield some good advice.

Randy

Thanks Randy and HK—that is good advice.  I also recall GS mentioning the DAC/Streamer first and I’m also in a similar boat—-I don’t intend to keep the Had amp for long as I wait for Sarah.  I also don’t think we can go wrong on the sequence.  Based on what I’ve read so far—no matter where you start—improvements are going to be noticeable and will only increase as you add the fusebox to more components.

Interesting, related side note:

I recently added a Puritan Audio PSM156 to my system with good results. I was talking to one of the Puritan dealers about adding another one of the Ultimate power cables, and I said that I thought that I would put it on my dac, but he recommended putting it on my amp. Seems like I need to rethink my component priorities.

Randy

HK, thank you for the black friday sale information.  I talked to Mark and he did confirm that they are on sale.
Some questions on fuse ratings.  
1.  I know the UFO25 is 3A slow or fast blow, the CSP3 is also 3A but the manual does not specify slow or fast blow.  Is it also slow blow?
2.  GS, For the Holo May KTE, is the 4A slow or fast blow?
Thanks all!
Bob

Thanks GS!  I will have to go back and read the thread to see how you used one fuse box for multiple equipment.
Bob

Installed the new digital fuse box on my SRA power cord to my ZMA with one the 1' piggytail power cords from Veri-Fi Audio. It takes a bit of time for the silver coated copper of the piggy tails to settle in.

With that said here is my initial impressions. A previous slight, annoying buzzing from my ZMA amplifier is totaling gone. The noise floor in my system is now subterranean. That is with a dedicated AC line to my amp and separate one to my source equipment & Furutech GTX-D NCF(R) for both lines.

I am a bit gobsmacked listening to some of the Qobuz playlists via Roon on my modified CXN V2 streamer/DAC this morning. It's really a quite stunning difference.

I'll be experimenting with a pure copper and the gold anodized copper sluggo (metal rod that replaces the fuse in the IEC outlet) over the next month or so. Can't wait for my extra 1M SRA "Amp Version" hybrid power cord to put the finishing touch on my power supply to the ZMA.

A bit OCD, maybe. But my ears can't argue with the results😊.

HK

I am kicking myself for not getting a Swiss Digital Fuse Box for my Zen Mystery Amp sooner. The short piggy tail cable is still burning on but the sound quality improvement... my oh my.

Many thanks & kudos to GroovySauce for bringing this to our attention.

HK

Thanks to all and Mark!  Looking to get my fuse boxes!