Vera-Fi Audio LLC
Piggy Tail Power Cables
Piggy Tail Power Cables
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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 and 2ft lengths, 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.



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"
I had check-boxed fuses off as a facet I wouldn't bother toiling over after 'sampling' a couple Hifi fuses and coming back to the stock fuse the manufacturer supplied and used while designing and trialing their product on both counts.
In short, I had come to the conclusion that Hifi fuses are not for me as both added coloration.
Enter the SFDB. It works without adding coloration. Everything opens up, is more resolved and dynamic, and with a noticeable drop in 'digitus'. I am not a believer in Hifi fuses, but can hence highly recommend the SFDB.
Additionally, communication with Mark, and others at Vera-Fi Audio, has been a pleasure.
I wasn't sure what to expect when I initially ordered a SDFB and graphene sluggo for my DAC. After reading many positive user reviews and speaking to a dealer in my area who recommended them highly, I decided to take a chance and place an order with Mark.
After an easy installation process, I was quite shocked with the sound improvement. Vocals are now much more present, improved separation, soundstage and depth/layering. The music flows from my speakers with a relaxed ease. I was so impressed with the results, I immediately ordered 3 more. One for my preamp, power amp and switch. Each fuse box made noticeable improvements in my system, especially the ones on my DAC and switch. Very impressive performance improvement for a relatively low cost compared to the other components in my system. The only negative thing I can say about the fuse box is if you try one, you may end up wanting one for each component in your system!
Everything you've read but Mark in the other reviews is absolutely true. He's a truly wonderful guy to deal with. He was always quick to respond to all my messages and went out of his way to ensure I got the properly configured fuse boxes for each of my components. If you have any questions, don't hesitate to send him a message, he's a real pleasure to deal with.
Vera-Fi Audio has quickly become one of my favourite Hi-Fi companies in 2025. Highly recommended!
I received fuses a month ago for three Pass Lab amplifiers used in dual amplification: two Pass 60.5 XA for low frequencies and one Pass 30.5 XA for high frequencies. After changing the fuses I can say that the swisse box do a very good job. At first I used them with gold sluggoes, already with very good results, at a later time I replaced them with graphene sluggoes (obtained on very good terms and being able to take advantage of an offer although I had bought them a few weeks earlier). Thank you Mark I appreciated this sales ethic in a profit-driven world.
I must preface this by saying that what convinced me to purchase, beyond the enthusiastic comments I read on these pages, was the logic behind this project. Those who, like me, compose their systems with countless electrical devices often get the result of both enhancement and degradation. In addition to EMI and RFI interference, ground loops, and noise generated by each device that is added, one should not forget the degradation caused by these funnels that are the fuses that actually multiply the bottlenecks in the acoustic signal path in proportion to their use: in my case a cascade of switches, a Clock, a streamer, a DCC, a converter, a preamplifier, and three power amplifiers. The project of removing these bottlenecks seemed to me a simple and enlightened idea to pursue the most neutral position, which is that of a device with the best possible power supply. I will give below some suggestions to eliminate in my opinion the risks due to the suppression of the physical fuse with the electronic one.
I waited a break-in of a hundred hours before moving on to a critical listening of the results obtained. Not only were the changes already convincing, but there was further obvious room for progress with the graphene sluggo version. After swapping the old Synergestic fuses (orange and purple in my case) for the swisse fuses with the gold sluggoes, I caught a better homogenization between the two frequency bands in the bi-amplification. Another rather noticeable nuance emerged in the spatial delineation of instruments, particularly voices. The previous fuses seemed to enhance the midrange or treble depending on the model, but at the expense of the edges of the instruments and voices, which found themselves no longer placed in a delimited space relative to other voices or instruments. In other words, it seemed to me that in the old fuses the greater efficiency was achieved at the expense of the separation and contours of the elements on the soundstage being less precise. With some recordings, such as Pergolesi's Stabat mater in Abbado's recording, the voices of Margaret Marshall and Lucia Valentini Terrani are now better separated and more similar to the reference obtained in headphones. With the graphene sluggoes the whole range and in particular the basses have improved in articulation, speed and in the case of the basses have become tighter and more dynamic. Very often we remedy one of these degradations by unbalancing other parameters. In other words, we correct an alleged imbalance by introducing other imbalances in a chain of errors that balance each other out. The temptation, needless to say, is to proceed with the elimination of the other bottlenecks, wallet permitting.
A word of advice to finish up : in the use of fused swisse in amplifiers or other devices with stand-bye set-up precautions are to be considered. Due to the fact that swisse fuses take a few seconds before the green light comes on making the defense of your hi-fi devices effective, following a blackout of the mains or home electrical panel, the stand-bye position could result in power arriving before the electronic fuse is activated. I therefore recommend that you take the precaution of turning the device off, wait for the light to change to green before putting it on standby.
Thank you in any case to Mark and his team for the pleasure this new listening brings me.
Alessandro
Very pleased with the Graphene Sluggo. Not fully cooked yet and might take a while longer as I don't leave my amp powered up, but the easiest way to put it is smooth with an increase of information. Pleased enough that I will be ordering for the rest of my gear in the near future.
Fantastic. Amplifier producing bigger sound stage and instrument separation. More resolution but not harsh. Less tense, more musical. Makes me want to listen.
Include instruction to handle graphene sluggo with minimum contact when installing
Purchased two of these. One for my integrated amp and one for my DAC. In the end, floored by what it did for the amp, opening up the air, solidified the bass kick and added lower mid-range weight. My DAC was another story, sound got hard edged and a little too shouty for my tastes. Another reviewer stated that someone may or may not like what it does. So, as the title suggests, take the time to listen to what it does before making a judgment. That said, another 5 stars for Mark at team at Vera-Fi. Answers email questions quickly, fought through the CA fires, and still did their best to take care of customers.
I wanted to share my impressions of the SDFB. I’ve ordered one SDFB (20A) for my Sanders Magtech power amp. I ordered the box with the graphene sluggos.
I’m using SR Research fuses in my entire system. Mostly Masters and some Purples. So below impressions are vs these SR Fuses and not vs stock fuses.
A difficulty here in Europe was the US socket on the output. I was only able to use the SFDB with the provided pigtail. This silver plated pigtail didn’t do it at in my setup. Timbre was synthetic and images were flat.
So I ordered a Schuko to IEC adapter. With the adapter I was able to connect the SDFB directly to the outlet in my power bar. Also, I ordered a US male to Schuko adapter for the output. Now I could connect any power cable at home finished with Schuko plugs. None of the adapters was „hifi-grade“. Just standard products from the electronics shop.
Using these adapters instead of the pigtail completely transformed my experience with the SDFB. I strongly advise anybody to use such adapters. I think Mark and the team are currently working on hifi-grade adapters With the adapter I was absolutely blown away by the result. The soundstage had increased a lot in terms of height, width and depth. Better than with the Master and significantly better than with the Purple. While the Master fuse tends to suck out lower mids, the Purple fuse emphasize this specific frequency range. So in combination this works but it needs attention and the willingness to balance things out. The fuse boxes frequency range remained neutral in the best sense. So there is no need to compensate anything in the process, like maintaining body and musicality with switch of cables, tube rolling, etc. It is thus a very clear improvement over both SR fuses.
Also seperation was clearly improved without loosing musicality.
The timbre was phenomenal: organic and natural. The sound had body and heft if the recording allowed for it. With leaner, airier recordings, it was open and spherical. There was a significant increase in micro and macro details.
The fact that the fuse box outperformed the SR Master and Purple in my amp, makes it very appealing. Also, fuses have blown in the past increasing the costs.
After the positive experience, I ordered more SDFB to upgrade the entire system. I observed the same improvements with every change. Maybe just slightly less of it the more I swapped but every single upgrade was very well worth the price.
I can strongly advise anybody to check these out. These are a phenomenal improvement for a very fair price.
Really impressed by the addition of this box and a graphene "fuse."
A wider and deeper soundstage, instrument separation with fuller bass and crisp treble, and much more detail.
Installed on my Nadac Merging, I've ordered a new one for my amp.
Thanks, Mark.
Replaced all fuses in my system, about 10 in total. A very worthy investment. Thank you Mark
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.
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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
我的系统有两条HIFI专线:
A线路:Aurender N150,Innuos Phoenix USB Reclocker,精音DAC-D1000 MK2(R2R)。
B线路:小不点LD-Y3全平衡300B胆机耳放。
从国外论坛中了解到Vera-Fi Audio的SnubWay和Main Stream这两款降噪新品后,我联系了Mark。在30天免费退货的条件下,我尝试了这两款产品。此前我用过日本Furutech NCF Clear Line电源净化器和美国Shunyata Research Venom Defender电源优化调谐器,但效果不够明显,也不够理想。按照Mark的指示,并联设备需要通电400小时才能达到最佳状态,目前我的通电时间已接近400小时。
由于SnubWay和Main Stream体积较大(三角形设计),如果和电源线一起插入美标插座,空间不够,所以我自制了几条公母转接线来搭配。我将SnubWay(2个)和Main Stream(1个)放置在以下位置:
SnubWay #1:插入A线路的Sierra 20A镀金背插座,通过Hubbell橡胶插头转接线与CARDAS Clear Power电源线并联,供电给Aurender N150数播。
SnubWay #2:插入B线路的A&H-H 6262-2 DELUXE电木插座,通过电木插头转接线接入,与A.R.T. AC-8 G1电源线并联,供电给小不点LD-Y3耳放。
Main Stream:插入B线路的Hubbell 9595 + HUBBELL BK-12433总墙插。
听感上的变化:
加入这三个并联降噪设备后,我试听了熟悉的曲目,包括交响乐(如马勒《第二交响曲》)、人声(如蔡琴《渡口》)和爵士(如Dave Brubeck《Take Five》)。整体听感提升明显,背景黑度更深,细节更清晰。以下是具体变化:
背景黑度更深,细节更清晰
在A线路加入SnubWay #1后,数播端的背景噪声明显减少。播放《渡口》时,蔡琴的呼吸声和低频鼓点之间的空隙感更强,细节浮现得更为自然。以前偶尔能察觉到的微弱“沙沙”声几乎完全消失,背景变得像“墨汁般黑”,让人更专注于音乐本身。
声场扩展,3D感增强
Main Stream在B线路的加入对声场影响显著。听《第二交响曲》时,乐团的纵深感和定位更立体,弦乐组与铜管组层次分明,仿佛能感受到乐手之间的距离。相比之前,声场宽度和深度都扩展了不少,3D包围感让人有种“置身现场”的沉浸感。
低频下潜更深,纹理更丰富
SnubWay #2和Main Stream在B线路的协同作用,让耳放的低频表现更上一层楼。《Take Five》的鼓点下潜更深,力度感更强,同时低频的纹理和扩散感也更自然,不再有那种“糊在一起”的感觉。尤其是Main Stream加入后,过滤了家电电机噪声,低频的氛围感更浓厚,整体听起来更松弛有力。
人声情感更细腻,动态更宽松
人声方面,《渡口》中蔡琴的声音轮廓更清晰,情感的起伏和喉韵细节被放大,显得更有温度和感染力。动态范围也有提升,弱音到强音的过渡更顺畅自然,没有之前那种轻微的“压迫感”,乐感变得更抓耳。
整体氛围感和乐感提升
三者搭配后,系统整体的氛围感明显增强,音乐不再只是“精准还原”,而是多了一份活生生的生命力。无论是大编制的恢弘,还是小编制的情绪流淌,都让人更容易沉浸其中,长时间聆听也不觉得疲惫。
Vera-Fi Audio的SnubWay和Main Stream作为并联降噪设备,在我的系统中发挥了“锦上添花”的作用。SnubWay的高频噪声过滤能力让前端和放大环节的背景更干净,而Main Stream在低频和动态上带来了惊喜,两者协同工作将系统的潜力进一步挖掘出来。这三件“手雷”性价比很高,绝对是“调音利器”。
在使用这三个设备的过程中,Mark非常热情,有问必答,让我感到很亲切。我愿意尝试更多Vera-Fi Audio的产品,Mark很专业,同时也要感谢Mark的同事Peter。有时候对于Hi-Fi玩家来说,有些东西看似玄学,但其实背后有更多科学技术的支撑。Vera-Fi Audio的产品物有所值!

I have bought the Mainstream AC conditioner and the Snubway as well a few weeks ago. I can say that I was a little sceptical because I have a very high revealing system ,so how much better can it get? Well the first 150 hours were very subtle in audible differences but something was going on as I was starting to feel the music differently.The week after, I started to play some vinyls and WOW! I was so excited that I had to write to Mark to tell him he’s got 2 great products.The music sounded more live and detailed with a great soundstage pinpointing the instruments a notch above before. I need to mention a thank you to Mark, a real gentleman. He will answer any questions you may have regarding any issues you may have.I recommend both products as they complement each other.Thanks again to Mark and can’t wait for his next winner.

Having already experimented with a range of aftermarket fuses in my system, including the AM Ultimate Premier, AM M1, SR Orange, SR Purple, SR Pink, SR Master, Hifi-Tuning, and Gustard, I have developed a particular fondness for the SR Purple, Pink, and Master fuses, owning multiple units of each. After encountering several positive reviews about the SDFB, I decided to try it paired with the Graphene Sluggo in my Lampizator TRP II DAC.
The Lampizator TRP II is highly responsive to tuning components, making it an ideal candidate for the SDFB. The results were nothing short of remarkable. The soundstage expanded, the dynamics of the music became even more pronounced, and the spatial depth of the audio improved significantly. Additionally, all frequencies seemed to receive a more balanced enhancement. It was as though the SDFB took an already exceptional-sounding system and elevated it across every dimension.
Impressed with the performance, I immediately ordered additional SDFBs. In summary, the SDFB is an outstanding tuning component that delivers impressive results at a very reasonable price, making it a highly recommended upgrade for any audiophile seeking to refine their system.
Cheerz over the pond
Usé

I have 2x Snubway + 2x Mainstream plugs connected to my Ansuz power distributor. My system never sounded better!
I was initially skeptical, but there are really safely amazing to use...even in very high-end systems.

The first 30 hours I heard the potential but the tone seemed off. Now about 60 hours in I am totally blown away! The biggest improvement is the soundstage and imaging. The SDFB on my amp has freed the music from my speakers. It is just there, in front of you. The speakers disappear (hard to do with 5 foot tall, 2 feet wide Acoustats). The depth is incredible! The background is quiet and black, details just jump out of the mix. Amp seems more powerful, more dynamic.
I still think it would be even better without having to use another separate power cord, and I intend to try to use adapters with the SDFB to compare against the Piggy. But the Extreme Piggy is very good.
This is one of 5he best tweaks I have tried. Highly recommended!

These stands are much more substantial than my previous pangea stands.. and use 4 metal posts instead of the pangeas 3 that were smaller in diameter. The top plate is also much bigger, which I really appreciate. My speakers perfectly fit on the top plate like they were designed for each other! Speakers are selah voce, pictured here https://ibb.co/vS5znHV

Started with a SAFB on a PP Audio P5. It seemed logical that the fuse was a bottle neck for power flow. It another high-end system, the manufacturer uses breakers, not fuses. I heard an immediate improvement. I now own eight of them, removing one SR Master fuse and other SR fuses.
I installed graphene slugos in the PS Audio DAC mk. 2 and the BAT VK-80. Through dedicated 20 amp line, I am driving 1000 watts per channel into PS Audio FR-20 speakers. SAFBs made a profound impact. This is an end game system now. Said it before but this time it is a commitment. Last dollars spent.
I didn't use the small spikes that came with the product, since I used mine in front of my PureAudioProject speakers.
Effective decoupling, thanks to the damping system under each VBH, a kind of rubber ring that stabilizes perfectly.

Major sound upgrade, super easy to install. I bit the bullet and went with the "Graphene Sluggo". Sound is simply amazing. Huge difference in soundstage and imaging.