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Vera-Fi Audio LLC

Main Stream - Master Class Dynamic Parallel AC Line Conditioner

Main Stream - Master Class Dynamic Parallel AC Line Conditioner

Regular price $295.00 USD
Regular price Sale price $295.00 USD
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Master Class Dynamic Parallel AC Line Conditioner

Main Stream is designed to improve the performance of your high-end audio or video system by reducing the amount of AC Mains-based interference travelling on the wires within your home. This interference is created not only by other components in the system, but also appliances and other electrical equipment elsewhere in the house. Sometimes even emanating from outside your home!

Of course, this interference is mostly in the RF range, but things like refrigerators, air conditioners and heaters, washers and dryers; anything with a big motor and put a pulse of energy onty your home AC line and it will be "felt" by other equipment within the home. The energy imposed on the line is absorbed or filtered in different ways, depending on the frequency band involved. Part of Mainstream's effectiveness is due to the multiple frequency bands it effects while utilizing a simple topology comprising a minimum number of parts.

Line interference can cause many undesirable effects; hum, hiss, hash, or buzzing sounds from your speakers, a slight vibration that can be felt through the chassis of your components or on the motor of your turntable, and on video displays as random lines, moving bars or fuzzy images.

These effects can be experienced individually or in combinations. It is interesting to note that oftentimes the effect (hum, for instance) is apparently reduced, but our bands of interest do not include these very low frequencies. We are reducing energy in a band that infers these types of noise reductions.

MainStream is called a “parallel” line conditioner because you do not plug your component INTO it, but rather plug it into the Mains socket closest to the component. In this way the MainStream is never restricting the flow of current to your components, simply removing the interference it encounters on the line as the current flows by. And there is no limit to how many MainStreams you can use; a large system may best be served by several.

As you probably know, the other type of line conditioning is called "series". There are many (maybe most?) products out there which plug into the wall and then your component(s) plug into it. With these, the current must pass through the various filter parts on their way to your audio component, necessitating the internal parts being of both high enough voltage and current to support the power demands of the attached product(s). This makes these conditioners both larger and more expensive than a parallel type, and they are often designed to serve somewhat different needs, or sometimes one of just distribution and surge protection.

Mainstream uses a combination of reactive elements to create tuned filters designed to specifically reduce the levels of noise specifically known to interfere with your audio enjoyment. Our topology excludes the use of any type of resonant transformer as a wave shaping device, and rather only removes unwanted frequencies.

• Capable of reducing system background noise to vanishingly low levels.

• Reasonably priced,

• Milled extruded aluminum case

• Designed for a long life of continuous service

• A faint blue glow shows it is working

• Laboratory tests prove the effectiveness of MainStream via Fast Fourier Transform graphs

View full details

Main Stream Reviews on YouTube

Audio Pursuit gives Main Stream the Tesla award alongside SnubWay

Vera-Fi Main Stream Quick Overview

Budget-Friendly Power Conditioners: Snubway & Main Stream

Articles about Main Stream

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

Main Stream wins 2024 Accessory of the Year awarded by Headphone Guru

Main Stream provide the kind of overall improvements you'd expect to pay through the nose for.

The Main Stream will make a similar contribution to your system just like fine-tuning your speakers for optimum placement and turntable setup.

The Main Stream brought me ever closer to the music while providing a more nuanced performance.

The Main Stream is an incredible value and an extremely simple way to improve your audio system without introducing any negative effects.

I can’t think of any other product that improves recorded music as dramatically as Main Stream.

Main Stream has worked wonders in my all-analog system.

Customer Reviews

Based on 22 reviews
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J
John Hannat (Welling, GB)
Main Stream + Snubway

I have been building various systems over 40 years and can state these AC Filters are extraordinary in performance and dare I say an absolute bargain!
Price to performance value is completely off the charts! Tremendous customer service all the way through, thank you Mark!

W
Wojciech Niedzwiecki (Lodz, PL)
Main Stream

Main Stream works very good together with SnubWay I like these pair.

G
Gordon Paul (Atlanta, US)
Works great!

An example: Listening to Jimmy Smith, "Back at the Chicken Shack" album.
192/24.
With the Main Stream plugged into the house line that powers my network gear, it sort of sounds like I'm front row at a club. I'm hearing the amps and Leslie speaker from close range.
Pull the Main Stream out, and it's like I've moved back 5 rows. Everything still sounds good, but not as distinct as front row.

B
Brad Buchanan (McMinnville, US)
what a pleasant surprise

At this price point I wasn't expecting much an willing to take a chance. But I am pleased to say that the improvements are noticeable.

U
U.H. (Camden, GB)
Very Good Sound Improvement

Nice contact, good shipping quality and good quality of devices.
I already own 4 pieces, and sound quality continued to improve.
Overall highly recommended!

T
Ted Danowski (Inglewood, US)
Fantastic

I was not expecting much, since I already had two Purons in my system. I took the Purons out as was recommended and I was so wrong. The Subway and Main Stream are fantastic. Took away even more grunge, that I didn’t even know was there until it was gone. I’m hearing so much detail that was buried far in the mix of so many songs, that I can’t stop playing music. Fantastic and amazing products.

L
Larry Kiraly (Perrysburg, US)
Excellent Product

An excellent product.
Highly recommended!

W
William Riley (San Diego, US)
Better picture

I first used it on my computer. I plugged it into a small power strip, which is plugged into the wall. another power conditioner/power srip is plugged into the same duplex. The picture on the monitor became slightly better, and easier on the eyes.
The sound is from a medium quality soundbar, and it too is more legible and a little less "tinny" sounding. Overall I like it. I will probably get another one for the opposite phase, which powers the main stereo system. This way both phases are equally conditioned, and should be great for the balanced step down transformer made by Richard Grey Power Company.

D
Dana Jung (Alamo, US)
Quieter and Better Detail

I installed the MainStream at the beginning of my chain of two power strips feeding my router, modem and streaming source components. Results were fairly immediate and slightly more apparent over 2 to 3 days. There is a quieter background and more clarity to the music. This is one of my best bang for the dollar investments in my system.

D
DAVID MAGNAN (Camarillo, US)
Outstanding plug-in AC power conditioner.

My review is with the Master Class in conjunction with the Snubway (which specializes in switching power supply noise elimination). I found that with my system the two Vera-fi units together are a synergistic combination producing a much better sound than either by itself.

AC power noise has long been a major annoyance with my system, and now with two such pairs of Vera-fi plug-ins in my system plugged in near the system's power distribution box, the system has acquired an amazingly improved clarity and transparency and 3-dimensional holograhic imaging/depth of soundfield that seems to be associated with a greatly reduced noise level, a
much "blacker" background.

Overall I am much impressed with the units and wouldn't listen to my system without them.

Frequently Asked Questions (FAQs)

What does the Main Stream Master Class Dynamic Parallel AC Line Conditioner do?

The Main Stream reduces a broad spectrum of AC noise, allowing your system to achieve ultimate performance.

How is the Main Stream different from other power conditioners?

The Main Stream is a plug-in filter that increases the blackness of one's audio system, enhancing sound quality without introducing any negative effects. It concentrates its effects mostly between 10kHz and 20kHz where problems with AC Mains tend to show themselves.

Is the Main Stream easy to install?

Yes, simply plug the Main Stream into an outlet on the same circuit as your audio equipment. Main Stream is fine in Power Conditioners as well. Main Stream is also a parallel type filter so can be plugged into any available free power socket in your system.

Can I use the Main Stream with other power conditioning devices?

Yes, it can be used alongside other power conditioning devices like SnubWay or other products like Puron etc.

What kind of improvements can I expect in my audio system?

Experts and users have reported a darker background, revealing more detail and ambient cues, expanded soundstage, and tighter, deeper bass.