Vera-Fi Audio LLC
SnubWay - Noise Defender
SnubWay - Noise Defender
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What SnubWay does
What SnubWay does
You know how most modern gear—TVs, chargers, fridges, even that smart light bulb—runs on switched-mode power supplies? They’re efficient, but they dump a ton of high-frequency noise back into your mains.
That noise leaks into your audio chain—even if your setup’s ‘separate’—and messes with dynamics, clarity, texture. SnubWay acts like a noise vacuum for that mess. You plug it in near your system, and it passively clears out the crud those appliances feed into your wall.
It’s not voodoo. It’s science. And once you hear what your music sounds like without that everyday noise riding the line… you don’t go back.
Avoid getting down the rabbit hole —$2,000 power conditioners, regens, audiophile cables with ‘tuned’ dielectric geometry. Some were fine. Most just looked impressive.
What makes SnubWay different? It does not re-invent your power. It just targets the *actual* problem—noisy signal from SMPS and household junk. And it does it without drama. No switches, no LCDs, no ‘smart’ circuits trying to justify the price tag.
SnubWay’s like a silent worker. Not glamorous. Just clean, effective, and reliable. And for once, you won’t feel like you are paying extra for marketing fluff.
Product Description
Product Description
How It Works
Watch this SnubWay prototype (ParaSnub) demo by Dr. Viet Nguyen and discover how it can transform your setup!







I took a flyer on this during one of the occasional price reductions by Mark. Given the glowing reviews, Vera-Fi's generous return policy, and the reasonable cost, I decided, "why not, can't lose?"
So, I received the SnubWay, popped it in the the second outlet of the duplex that feeds my power conditioner / transformer and promptly and completely forgot about it. I didn't listen closely much that week, my system was mostly providing background music during several jam-packed days.
7-8 days in, I sat down and played some Pat Metheny, Beach Boys, Coltrane, and a bit of Yes. Sitting in the sweet spot, but working on the computer while doing so, I suddenly looked up and declared, "Wow - great clarity!" I don't think I've heard my system sound quite like that before.
Delighted, I started working less and listening more. A few records later, all sounding fresh and unveiled, I remembered the SnubWay. Coincidence? Who's to say? My system sounds so great these days, I haven't yet chanced removing the SW to test my impressions. I'm afraid of breaking the magic :).
When I finally do, I'll report back. But for now, this silly thing seems to be providing some serious good sorcery on my electrons...
Snubway improves sound stage and details and placement of the instruments on the sound stage. Using the combination of the Snubway and the Mainstream even further expanded the width and depth of the sound stage. Micro details become more evident.
Using both of these in the home theater provided better color saturation along with better overall sound!
In my 2 channel system the sound the sound became more holographic. A definite win-win for me. The more of these you add the more you'll gain.
Clearer sound and better separation of the music, heard more of the music.
This is my first Vera-Fi product. My system, except amp, runs through a 25# noise reduction Topaz transformer. The SnubWay still made a sonic improvement. There is a band of hash and grit in the lower highs that is greatly reduced. The system sounds so much more pleasant and relaxing.
This works so well, I purchased a 2nd SnubWay for the amp and a Main Stream for the complete system. Amazing improvement. The system now sounds the same day or night. I can listen for hours without fatigue. Highly recommended.
My Main Stream and SnubWay filters arrived a week ago today. I plugged both into the back of my power conditioner replacing one of your older Puron filters. (I was so impressed with the performance of your older filter that I decided to gamble on upgrading to this pair of filters.) They have been in my system now for about 140 hours. Listening at my normal level to my favorite tracks, the music was noticeable louder. As I listened, I realized that the overall volume had not increased but the dynamic contrasts within the music were greatly improved. I assume this was due to a further reduction of the noise floor. The other thing I noticed was that very subtle details in the background, bells, brushes on cymbals, wood blocks, while clearly resolved in the past, were part of a “sonic fabric.” That fabric was now gone and each of these delicate sounds now existed in three-dimensional space with a sense of air around them and their own dynamic range. For a guy like me, who loves hearing these inner details, my listening engagement went off the charts. Long story short, this pair of filters made my system more transparent, more engaging and brought me closer to the experience of listening to live music. If anyone out there is fence-sitting, debating on getting these, ORDER THEM! I have spent thousands on cable upgrades and not heard as big an improvement as these filters provide.
MIT Z-1 and Blue Circle BC86. Highly recommended!
WOW! 💥 I added the Main Stream unit first. After a good amount of break-in time, I started hearing the backgrounds in the music sound quieter. Instruments are a bit more focused in their own space. A subtle but noticeable improvement overall. Now I decided to try out the SnubWay. 48 hours in, no real change in things. Fast forward to about 500 hours of being in my stereo system (with the MainStream still in place) and I cannot believe what I am hearing! I have a much bigger soundstage right-to-left and the same for depth front-to-back. There's a greater separation of instruments & voices and yet there's more layering and detail in between. Anyone who cares about their music and optimizing the way your stereo sounds needs to contact Mark L. Schifter at Vera-Fi Audio. Of course, YMMV in your system. Tell Mark that I sent you!
This is my second Snubwayand I have had one for my audio system and it made an audible improvement. This second one is for my new tv and soundbar. Again a visual and audible improvement. Smoother clearer sound and sharper and clearer picture. Well worth the modest cost. Highly recommended!
With so many portable plug-in noise filters on the market, some of which I have tried and implemented in my system(s), I was leery of the SnubWay but decided to give it a try. I was not too impressed at first when implemented in my 2nd system as it caused an upper frequency glare when placed in the outlets in the listening room. With some experimentation, it became clear that placement was the key to extracting its full potential with one place being most effective and that was in the dining area where we have our laptops. Placing a SnubWay on that circuit had a substantial improvement on the systems resolution and noise floor. Unplugging the laptops was also shown to reveal additional reduction in noise. Highly recommended but experimenting with placement in one's home is key to extracting its full potential.
In a nut shell: Snubway and Mainstream combination has cleaned my audio as much the best painting with excellent details and texture covered with dust for years comes to life when the dust is cleaned. Picture hasn't changed, its the appearance that is now more appealing. Just this way these devices makes music pop up.
I wouldn't give what has improved on which of the track, because every track sounded awesome, very detailed to me. I don't want to leave it to your imagination rather wanted you to experience it.
While some may consider the effect to being bright due to increased resolution, but truly that is how probably your system with good power supposed to sound.
There may be several other products with similar offerings and if you have time to experiment, fine try your best fit, otherwise these are real stuff at a very affordable price. And if you are a person like me, would spend time enjoying the music then think no further, just add Snubway and Mainstream. Mostly you will not regret with your decision.
I would say buy it, plug it, sit back and relax for a week and then thank yourself for the decision to buy it otherwise avail the 30 day money back guarantee. Whatever don't decide to unplug it without running atleast for 100+ hours, 10 days to the best.
Detailed review:
Friends if you have time read thru the entire review to get a feel of my experience.
I am a real person, an audiophile, paid purchaser of the products, not a reviewer paid or affiliated to any publication nor have any affiliation with the product(s) or the company nor here to influence your decision.
My setup has power conditioner (Synergistic Research Powercell SX) and multiple power enhancers (from High Fidelity cables, Add-Powr Sorcer 4 and Synergistic Research various products) including the well acclaimed power cords (Synergistic Research SRX and Galileo) that are supposed to eliminate noise. Absolutely no product using SMPS, only LPS from Sean Jacob and Farad even on network devices including modem, router and all network switches in the chain. All external PSUs use Core power technologies Diamond xtreme power cords. And most importantly the entire audio network is on a seperate circuit with 30A breaker on its own. I was very happy with my setup.
In my interactions Mark recommended to try Snubway. I mentioned to him I already have several power enhancers in my setup and will these really add or do anything different. Mark very confidently responded, based on what his customers experiences was it will, give it a try. I very reluctantly ordered to give it a try, not because they are expensive but because of the efforts and time involved to spend on it.
Here's the summary of my experience:
Upon plugging Snubway and Mainstream to the main power receptacle that feeds the entire system, I heard something different happening.
At first the change I heard was in the lower frequencies, which was also my observation with most other products that are made of pure copper. The experience was OK as it isn't the final state, results can go either side after few hours of listening. The best part even at this stage is nothing is added or removed, I could enjoy music as before.
Day 2 (after 30hrs+), I haven't heard what my experience has been the first few hours of plugging in. Music seems to be sounding more closer to how it was before adding these devices, but a little more details poping out from a very far off distance. Day 3 thru 5 (36hrs to 100hrs), gradual improvement especially tigher bass compared to the previous days as well as details popping out closer as it aged connected and powered. I don't shut my audio equipment, leave them on always except when away for more than a day or bad weather conditions.
I usually play audio at moderately higher volumes especially when recordings are too good and wanted to enjoy every detail. At about 100hrs+ of use, due to an unavoidable situation I had to play music at considerably lower volume, almost 2-3db down from my normal listening volumes all that day. Interestingly, in my listenings that day I never felt a need to raise volume even for those existing moments. Every detail popped up crystal clear, just like how a painting would show cleaning dust from it. Imagining and soundstage from my original audio equipment is unaltered, just the stress is relieved.
As days passed it just added more excitement forcing me to listen again every track I previously enjoyed. At this stage I decide to go back to earlier setup, so, unplugged both Snubway and Mainstream from the chain. I could hear the difference immediately, but this time felt it a bit dull.
Not being sure, to double verify whether it is a placebo effect or real, plugged Snubway and Mainstream into my multi-channel HT. My HT setup too is equally powered with power conditioner, enhancers and power cords similar to audio setup. Surprisingly, same impact on audio there too and interestingly video improved to a gr...
SnubWay Reviews on YouTube

Audio Pursuit
Audio Pursuit gives SnubWay the Tesla award alongside Main Stream

Audio Pursuit
Budget-Friendly Power Conditioners: Snubway & Main Stream
Articles about SnubWay - Noise Defender

Positive Feedback
Tom Gibbs awards Main Stream and SnubWay for 2024 Writers' Choice Award

Part Time Audiophile
It was almost mind-blowing to hear such a transparent system become even more transparent with SnubWay.

Positive Feedback
Vera-Fi Audio's SnubWay Noise Defender: Taking Your Audio and Video to the Next Level

Tone Publications
The SnubWay makes a massive difference in reducing the overall graininess of your system’s sound.
diyAudio
SnubWay Development and Updates on diyAudio Threads by Viet Nguyen
Frequently Asked Questions (FAQs)
What is the SnubWay - Noise Defender?
The SnubWay is a device designed to reduce AC noise in your audio system, enhancing sound clarity and overall performance. SnubWay works on eliminating Switch Mode Power Supply Noise which poisons your AC Mains.
How do I install the SnubWay in my audio setup?
Simply plug the SnubWay into an available outlet on the same circuit as your audio equipment. No additional setup is required. We prefer any open Duplex on the Wall, but can be used with Power Conditioners if no open Duplex exists.
Will the SnubWay work with any audio system?
Yes, the SnubWay is compatible with a wide range of audio systems and components. If you have a Flat Panel TV in your home or use Wall Chargers for Mobile Phones, you will benefit from having a SnubWay.
Can I use multiple SnubWay devices in my setup?
Yes, using multiple SnubWay devices can further reduce noise across different circuits in your audio setup.
Why doesn't the SnubWay have an indicator light to show it's working?
The SnubWay operates passively to filter out high-frequency noise from your power supply. It lacks LED indicator lights by design, as its effectiveness is instantly reflected through improved clarity in TV screens and improved audio performance of the system rather than through visual indicators on the product.
Can I plug in the SnubWay while my audio equipment is turned on?
Yes, the SnubWay is designed to be safely plugged into a power outlet near your audio equipment, even while your system is operational or turned on. We have tested it ourselves and our users testify to that.
What are the specifications of SnubWay?
Snubway is available in both model and type:
- 110v and 220/240v
- 50Hz and 60Hz
Featuring:
- 5 parallel RLC filter designed for reducing noise from 30kHz to > 1MHz
- Premium Viborg plug base and pure copper wall socket blades
- Custom-made CNC solid aluminum case
To ensure you receive the appropriate version for your region, please contact us directly with your specific voltage requirements. We are committed to accommodating your needs and will provide the suitable SnubWay model to match your local power specifications.
Is there a trial period or return policy for the SnubWay?
Yes, we offer a 30-day return policy for you to experience the benefits in your system.
Where can I find Vera-Fi Audio warranty information?
You may find information about warranty here.
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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