Vera-Fi Audio LLC
Piggy Tail Power Cables
Piggy Tail Power Cables
Couldn't load pickup availability
Note: Shipping times for Swiss Digital Fuse Box can take 3 to 5 days.
When purchasing please select the Fuse Rating, Type and Sluggo of your choice. If your fuse rating is not listed, please select "Other" and send us a message with value using the contact form at checkout.
SDFB Price Update (November 1, 2024)
SDFB Price Update (November 1, 2024)
The Swiss Digital FUSE BOX has been an around-the-world massive success. We are all very grateful for the faith and trust you placed in us with SDFB and it’s ancillary products. Thank YOU!
Unfortunately, we must raise the price. On the 1st of November 2024. Costs are going through the roof, and we’ve done our best to not come to this point... but here we are:
- Swiss Digital Fuse Box from $395/unit to $495/unit
- Piggy Tail from $99 each to $125 ach
- Super Piggy Tail from $149 each to $175 each
- Extreme Piggy Tail from $199 each to $249 each
- Sluggos No Price Increase
- Swiss Digital Fuse Box Max from $450/unit to $595/unit
Product Description
Product Description
Our Piggy Tails are high performance, short interconnecting power cables for use with Swiss Digital Fuse Box or other high current power delivery products only requiring a short distance.
Piggy Tail - Our base model is a 1ft power cable constructed from 9 separate cores of 16-gauge 8N oxygen-free copper, each plated with 70 microns of extruded pure silver. Designed for ultra-low resistance and uncompromised signal integrity, this cable ensures your system benefits from stable, noise-free power without unnecessary bulk.
Super Piggy Tail - Stepping up from the base model, the Super Piggy Tail refines and expands upon its predecessor with even greater efficiency. Built with 3 cores conductor shaft with built-in oversized high-purity silver-plated oxygen-free high thermal conductivity (OFHC) square core copper + multi-strand pure copper, it delivers lower resistance, improved current flow, and even better shielding against electrical interference. Ideal for systems demanding more refined dynamics and an even lower noise floor.
Extreme Piggy Tail - For those who demand the absolute best, the Extreme Piggy Tail takes performance to another level. Available in 1ft length only, it doubles the number of silver-plated oxygen-free copper cores for even lower resistance and superior current capability. The result? Tighter bass, improved transient response, and effortless power delivery to high-current components.
Try the Piggy Tail Power Cables for yourself in your own home. All products sold by Vera-Fi Audio are covered by a 30-day money back guarantee should you be dissatisfied in any way.



The Graphene Sluggo brought a more natural sound all around. Thanks Mark
I’m very impressed with the SDFB. I’ve used many high-end fuses before, but most tend to alter the tonality, introduce noticeable midrange distortion, and result in bloated, loose bass. In contrast, the SDFB preserves the original tonality while significantly improving bass performance—offering greater detail, tighter control, and a clear reduction in distortion across the entire spectrum. The soundstage also expands substantially.
I briefly compared it directly with a fuse-less setup and can confirm that while there’s a slight reduction in body and bloom, the SDFB is the closest I’ve heard to running without a fuse.
Killer combination with SDFB
As a late-comer to the fuse-upgrade culture, I'm glad that I finally stepped into the realm of SDFBs. I currently use a pair of Dutch and Dutch 8Cs sourced by Grimm Audio Mu2 as reference. I replaced all three fuses with SDFB and Graphene Sluggos. On my 8Cs, not only it opened up the soundstage, it did so without any sacrifice, the soundstage is more defined and the presentation is embodied with better clarity and even better focused - large orchestral passages become more layered, the tonality more visceral and congested sections more relaxed without sounding "loose". The additional graphene added to my Grimm Mu2 tightened the overall focus even more and further enhanced the overall realism of my system. This upgrade to me is fundamental and astounding. It ranked among the best upgrades that I'd ever experienced!
The single most effective "tweak"
Amazing, pretty much sums it up. Everything I’ve read about the SDFB, I found to me true in my 300 b amp.
This is my 9th SDFB! I obviously like them!
In my case, it's a necessary accessory to connect the SDFB to my CD player.
The result has been very good.
Rafael (BCN-Spain)
Creative thinking lead to the creation of this product which is an excellent addition.
Great value at such a low price. Dynamic, quiet with great bass. Works well with the SDFB.
Swiss Digital Fuse Box Reviews on YouTube

SG Live Acoustics
Before & After Installing Swiss Digital Fuse Box | Sgliveacoustics $50,000 Hi-Fi Setup, Instrument
Articles about Swiss Digital Fuse Box

Positive Feedback
Tom Gibbs and Bruce Kinch awards SDFB with Graphene Sluggo for 2024 Writers' Choice Award

What's Best Forum
SDFB improves separation, detail and clean but not sterile, it is musical and super engaging says Mr. Miyagi from What's Best Forum

Head-Fi Forums
BShaw featured SDFB on Audiophile Grade Fuses threads on Head-Fi Forums

Positive Feedback
Providing a Path to Unrestrained System Performance

Stereo Times
This accented the intimacy and closeness of the performance and enhanced the sense of stereo as more natural.

HiFi Audio Guru
Follow-up: Vera-Fi Audio's Swiss Digital Fuse Box, Now with the Graphene Sluggo

Positive Feedback
Swiss Digital FUSE BOX a Better Link in the Chain

Audiogon Forums
Swiss Digital Fuse Box - "What headroom sounds like"
Frequently Asked Questions (FAQs)
What is the Swiss Digital Fuse Box (SDFB)?
The SDFB is a device designed to improve the performance of your audio equipment by eliminating the weakest link in every system, which is the Fuse. The Fuse degrades with time and actually imparts an Impedance in and of itself. The SDFB is MicroProcessor Controlled and uses a State-of-the-Art Hall Effect Sensor to PROTECT your equipment.
How does the SDFB enhance audio performance?
By replacing conventional fuses with a metal rod called Sluggo, the SDFB reduces resistance and allows for better current flow, leading to improved midrange and treble clarity, increased power handling, and a more defined soundstage. We can promise a more refined bottom end as well.
Is the SDFB compatible with all audio equipment?
The SDFB is designed to be compatible with a wide range of audio equipment. However, it's essential to verify compatibility with your specific devices before installation. Please contact us here. Fuse Box works with gear rated at 500mA to 12 amps, with either Fast or Slow Blow varieties.
How does the SDFB provide protection without a traditional fuse?
The SDFB utilizes a microprocessor coupled to our precision Hall Effect Sensor / and Relay to monitor power flow, automatically opening the circuit in case of anomalies, thus providing protection without the need for a traditional fuse.
Can the SDFB be used in European audio systems?
Yes, SDFB is available in three voltage configurations:
- 110v, 60Hz
- 220/240v, 50Hz
- 220/240v, 60Hz (rare but used in a few parts of the world)
For users in the EU or parts of Asia, we recommend the following setup to ensure optimal performance without the need for adapters:
- Input Connection: Use your existing power cord to connect the wall outlet (whether Schuko or 3-blade US plug, as used in some regions) to the input side of the SDFB.
- Output Connection: Consider using one of our NEMA 15-type Piggy Tail power cables to connect the output of the SDFB to the IEC input of your audio equipment.
This configuration has been successfully implemented by over 200 SDFB users in the EU, delivering safe and exceptional results.
By following this setup, you can seamlessly integrate the SDFB into your system, enhancing performance while maintaining safety and compatibility.
What is the role of the Piggy Tail power cable in the SDFB setup?
The Piggy Tail is a short power cable designed to connect the SDFB's output to your audio equipment's power input, ensuring a secure and efficient connection.
Does the SDFB require any special installation procedures?
Installation of the SDFB involves replacing the existing fuse with the provided solid copper rod and connecting the device using the appropriate power cables. It's recommended to follow the manufacturer's installation guidelines or consult a professional.
Where can I find Vera-Fi Audio warranty information?
You may find information about warranty here.
Follow Us!
Subscribe to our mailing list for insider news, product launches, and more.
- Choosing a selection results in a full page refresh.
- Opens in a new window.

There are a couple of qualities of these subwoofers that I would like to comment on favorably. First, the coverage of the midbass frequencies, and in fact the musicality of the subwoofers, is remarkable for the price. In my room, the frequencies between 65 and 125 are suppressed by the room. The Caldara subwoofers compensate for this very nicely. Second, the visual appearance of the units is very nice.
Wow, I miss the ultra low frequencies that my old but no longer functional REL subwoofers provided, my music room does not really allow for reproduction of the frequencies between 20 and 40 Hz. The trade-off of musicality is therefore significant compensation.
I appreciated Mark’s generous offer to substitute the Caldera for the smaller model which was out of stock. If I can make one suggestion for future Caldera models, it would be to have speaker level inputs in addition to the RCA inputs.

Wow - I honestly wasn't sure if I was even a "bass guy" before purchasing 2x Caldera 12"s, and my Wharfedale Linton's even had already solid bass response, but in the endless quest for the "wow" factor, I was pointed towards Vera-Fi's subwoofer offerings.
Let me just say, I am absolutely blown away. I can't stop listening to my system -- it just sounds too good. I also have not experienced such remarkably good customer service from a company in quite some time. Thank you to Mark and the team for making such a reasonably priced product that punches far into much higher price points.

The Line Noise BlackHole (LNBH) sets the new industry standard for AC line noise elimination. In both my systems, the LNBH in combination with the Snub Station Zero easily bested the AudioQuest Niagara equipment that occupied both systems. If you can manage with a combined amperage total of less than 10 amps (that's much easier than most might imagine), these devices will shock you with the goodness they bring to your listening sessions. Yes, they eliminate AC-borne line noise, but the opens an entirely new listening experience, with incredible transparency and clarity, whether you listen to analog or digital sources. Very highly recommended, and maybe the most important product launch from Vera-Fi Audio yet!

I have two in my systems, both used in combination with the Line Noise BlackHole. The one in my all-analog system connects my PS Audio Stellar phono preamp, ProJect Classic EVO turntable, and my PrimaLuna EVO 300 tube integrated amplifier, which also has a Swiss Digital Fuse Box between the amp and SSZ's high-current, soft-start AC outlet. I'd been slightly troubled by a slight "buzz" in the system, which I attributed to either the Ortofon Quintet Bronze MC cartridge, the phono preamp, or the tube amplifier. After inserting the new VeraFi power conditioning equipment, the buzz was completely gone, and in its place is complete silence! The combination has replaced an AudioQuest Niagara 1200, which is a good unit, but not in the same class as the VeraFi LNBH, SSZ, and SDFB -- I have been totally shocked by the improvement, which stretches across every possible metric of analog playback.
The same setup is in my digital source system, except with an Infinity Fuse unit replacing the Swiss Digital Fuse Box. In this case, a new Boyuurange A50 Mk III SET 300B tube amp is plugged into the Infinity Fuse, then into the SSZ's soft-start outlet. My Aurender A1000 music server/network player is also connected to the SSZ, as well as my S.M.S.L. VMV D2R DAC. The soft-start outlet is perfect for extending 300b tube life, and the overall system sound is astonishingly good! I'm playing through a pair of vintage Klipsch RB3 Reference monitors (94 dB/watt, 3.8 ohms) and the room synergy is now beyond perfect with the VeraFi Equipment!

Hi there, Mark.
Hope you & yours are doing well. I had told you previously that the Mainstream, simply plugged into a wall outlet on the same circuit as most of my equipment, was revelatory the moment I plugged it in. Basically everything was clearer and the soundstage opened up with a new, blacker background. I have since added a Snubway on a dual plug with the Mainstream and plugged the cord from my Nagara 1200 into the same outlet. Since I did this concomitantly with adding two LNBH’s running off the Niagara (one powering the Pass INT-60 integrated and the other leading to my CD player and DAC) it's difficult to say what is doing what, but every tme I’ve added something here the results have been almost immediately perceptible. The bottom line is that it’s like havng a new system, which is interesting because I thought things were pretty good before! The individual instruments are clearer and more pin-point located, the highs are where they weren’t before (cymbals are a good indicator) and the bass is deeper and more well-defined. The soundstage has gotten deeper and more lateral. You can hear the wood in a cello. Female vocals, especially, are shockingly present. This is almost like the first tme I can say, like other people do, that’s it is like having the players in the room with you. Of course, this is not going to happen with a full symphony orchestra, but with a small group it’s close, and it wasn’t like this before. I will say, however, that positioning the LNBH’s was complicated, both by finding space on my racks and by the fact that, as light as they are, heavy power cords tend to flip them around. It made me wish I still had those old wooden/steel blocks I used to use to minimize vibration on equipment. I left those in Tennessee when I moved to Texas last summer. Isoblocks, I think they were called back in the 80’s. I’m gonna send a couple photos of my setup where you can see one LNBH atop the Niagara on the middle stand under the amp and one on the bottom of the right rack. The Mainstream/Snubway is plugged into the wall behind the right KEF speaker.
Since all that got plugged in together, it was hard to tell what the Snubway was doing, but I got another one to use in the living room where the TV (and the wireless modem) are hooked up. I plugged it into the wall about 6-8 feet away from the outlet (on the same circuit) those other things were hooked up to. I didn’t see much difference in picture quality, but the next evenng I came back and discovered my 15 yr-old OLED TV had somehow been replaced by a new one with deeper, more vibrant colors and blacker backgrounds. I’m not a big video guy, but I’m imjpressed at that result, especially since I didn’t want to pull everything out from the wall and move all the furniture there to get to the power strip.
Thank you, Mark!! The whole shebang was about $1100. It’s amazng to find value like this, and no way am I going to describe the results as “tweaks”!
Best wishes

I installed these in my lake house with an old pair of B&W DM601s. They sound fantastic. Great job guys and gals.

Vera-Fi Audio staff and owner are truly world-class - knowledgeable and kind! I can't ask for better experience. Thank you!!

As a late-comer to the fuse-upgrade culture, I'm glad that I finally stepped into the realm of SDFBs. I currently use a pair of Dutch and Dutch 8Cs sourced by Grimm Audio Mu2 as reference. I replaced all three fuses with SDFB and Graphene Sluggos. On my 8Cs, not only it opened up the soundstage, it did so without any sacrifice, the soundstage is more defined and the presentation is embodied with better clarity and even better focused - large orchestral passages become more layered, the tonality more visceral and congested sections more relaxed without sounding "loose". The additional graphene added to my Grimm Mu2 tightened the overall focus even more and further enhanced the overall realism of my system. This upgrade to me is fundamental and astounding. It ranked among the best upgrades that I'd ever experienced!

The Caldera 10s blend nicely with my Wharfedale EVO4.2s (big bookshelf speakers). The 10s were initially a little boomy in my small room, but blocking the vents yields pleasingly crisp bass. I plugged my integrated amp & the 10s into a "smart power strip" - so that switching on the amplifier energizes the outlets for the 10s. I'm really pleased with my purchase, and I'm relistening to my whole collection to hear the improvement.

I have 2 Caldera 12 subs. My wife think they look great and I love the sound of them. They blend so seamlessly with my Spatial Audio open baffle speakers. My only issue is with the auto on/ off…. It cuts off too quickly when no signal is present while the music is playing and then it cuts back on when signal is present while the music is playing… the problem is the switching on/off is audible. It distracts from the illusion of musicians playing in front of me. Of course I just leave them on now for a work around. Other than that it is a great piece of equipment that I am proud to own… to say nothing of its price/ value and quality. It sets it apart from a lot of budget subs and on par with the best