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PowerCell 12 UEF SE

See what condition your condition is in.


The PowerCell 12 UEF SE is more than your next generation power conditioner – it’s the heart of your audio system. With 10-gauge Silver Matrix point-to-point wiring and separate EM Cell filtration banks for the ultimate in component to component isolation and peak current delivery, 6 x UEF BLUE Duplexes, and utilizing Graphene, a near superconductor at room temperature, the PowerCell 12 UEF SE provides the purest and cleanest form of non-current-limiting power possible from today’s cutting edge components. Simply plug your entire system into the PowerCell 12 UEF SE to dramatically improve all areas of sound quality, guaranteed. Generating absolutely no heat or noise the PowerCell 12 UEF SE is perfect for all types of electronics including  power-hungry mono block amplifiers. And with two separate Active EM Cell power banks feeding 6 UEF Black Duplexes each isolated one from another through direct 10-gauge Silver Matrix point-to-point wiring, your PowerCell 12 UEF SE isolates digital from analog components better than any other PowerCell line conditioner. Of course, our flagship model comes standard with our High Current Atmosphere Level 3 Active power cable and can be custom ordered with a High Current Galileo UEF power cord for the ultimate sound quality upgrade.

What’s inside?

The PowerCell 12 UEF starts with a high carbon steel chassis treated with a UEF Coating that blocks EM and RFI interference and is designed to function as a superlative conduit for our new Ground Plane Technology. 

Developed exclusively for the PowerCell 12 UEF, the ULF (Ultra Low Frequency) Field Generator connects directly to the PowerCell 12’s (6) duplexes through the (6) Active EM Cells. It’s designed to clean your electric power by re-clocking the A/C with a rich, low-frequency harmonic that overrides noise and hash found in most common 50-60 cycle A/C.

Six separate UEF electromagnetic cells with graphene, act like supercapacitors to increase peak current on demand, allowing your components to draw more power than they would normally when connected to the wall. This gives your system added dynamic headroom while filtering the AC, all completely outside the signal path.

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The New PowerCell 12 UEF SE AC Line Conditioner is the culmination of 10 years of research into electromagnetic cell design starting with the first EM Cell prototype in 2007. EM Cells act to condition alternating current through the inductive coupling of differential EM fields and AC for an AC power conditioner that is entirely non-current limiting. The electromagnetic cells in your PowerCell 12 UEF SE operate in ways similar to a hydrogen cell, hence the name PowerCell, however, instead of a chemical reaction, an inductive coupling takes place between the plates. The effect of this reaction drastically reduces reactive capacitance in the AC signal transfer, preventing phase anomalies with a total absence of noise on the AC line.

The (6) Electromagnetic Cells provide two stages of filtration: (1) large 640 cm² “flat” cell covering all 12 outlets, and (5) 819 cm² ”folded” cells shielded and housed in carbon fiber cylinders. Four of the folded cells cover the outlets’ positive and negative poles or (2) cells each per three duplexes. The fifth folded cell covers the current’s ground plane system-wide. This new configuration makes it possible for the PowerCell 12 UEF SE to provide twice the filtration area of the outgoing PowerCell 10 UEF.

Altering the shape of the EM cells changes their inductance properties and thus their sound quality. Flat EM cells subjectively increase sound-staging air and liquidity while folded EM cells enhance detail, dynamics, and focus. Using both types of cells in unison gives your system the best attributes of both folded and flat EM Cells.

Further, the EM Cells now contain Graphene, a new highly conductive wonder material that consists of a single layer of pure carbon only a single atom thick. One of the many reasons that Graphene is so exciting is that it is almost a superconductor at room temperature. Superconductors are materials that can conduct electricity with almost no resistance when cooled to extremely low temperatures ranging from near absolute zero (-459.67°F or -273.15°C) to the temperature of liquid nitrogen (-140.8°F or -96°C). What makes Graphene so remarkable is that it can do this at room temperature.

The circuit board provides the foundation for the power that drives the EM Cells and ULF Field Generator, while Synergistic Power Transformers and Quantum Capacitors generate the purest electricity possible.

The highly conductive 62 cm² 99.995% pure silver Ground Strap is UEF treated and features Graphene for ground filtration borrowed from our award-winning SR Ground Block. In fact this Pure Silver Ground Strap is attached to each of the (6) SR Black AC outlet to Star Ground your entire system when components are plugged into the PowerCell 12 UEF. Star Grounding with UEF Filtration reduces series inductance in the ground path for a noticeable improvement in sound quality over traditional grounding options.

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The term “ground” refers to a connection to the Earth which acts as a reservoir charge. The highly conductive Pure Silver Ground Strap provides a conductive path for ground separate from the normal current-carrying path of your components which under certain conditions can add up to 10 dB of noise. The ground path with the least resistance is the best path to Earth and there is no better ground path than the PowerCell 12 UEF’s Pure Silver Ground Strap.

Plug up to twelve components into six of our highest performance BLUE UEF Duplex outlets (retail $250 each). BLUE UEF Duplexes were developed with the same technology found in our BLUE UEF Fuses and deliver similar benefits of a lower noise floor with improved frequency extension and sound staging. To further improve the quality of your analog and digital component’s performance, the six BLUE UEF Duplexes are divided into two banks, eliminating cross talk between components, and critically between analog and digital components, for the ultimate in component to component isolation. 

PowerCell 12 UEF SE Specifications:


Bundled with $3,495.00 Atmosphere SX Euphoria PowerCell AC Cable (5 ft.)

120V - $6,995.00

230V - $7,450.00


Bundled with $6,995.00 Galileo Discovery AC Cable (5 ft.)

120V - $10,495.00

230V - $10,950.00

  • All 10 awg. Silver Matrix point-to-point discrete wiring

Connector Output US:

  • 12 each BLUE UEF Outlets (Two stage Quantum Treatment)

Connector Output International (EU/AU/UK):

  • 12 each BLUE UEF Schuko outlets (Two stage Quantum Treatment)


  • Graphene treatment throughout unit
  • Internal “Active” power supply for biasing EM Cells
  • 2nd generation Internal ULF (Ultra-low frequency) Generator to bias AC to the Earth’s Schumann Resonance for a dramatic drop in a system’s noise floor
  • 2 each SR Power Transformers
  • 8 each SR Quantum Capacitors in EM Cell power supply and ULF field generator
  • High Carbon Steel/Aluminum “Ground Plane” chassis
  • New 6 EM Cell topology acts like a ‘Super Capacitor’ to increase peak current on demand allowing components to draw more current than when connected directly to the wall for added dynamic headroom

Internal Active UEF EM Horizontal Plane Cell area:

  • 640 square centimeters
  • 5 x Internal Active UEF EM Folded Carbon Fiber Cell area: 2343.15 square centimeters total

Connector Input:

  • 1 each Neutrik 32 amp PowerCon
  • 2 Isolated Output Banks; can be used to isolate analog from digital components

99.995% Pure Silver Ground Strap:

  • 62 square centimeters
  • 1 each special 10-gauge Atmosphere Level 3 Active PowerCell power cord that does not require a separate MPC, just plug and play like standard non-active power cords—no extra wires

Weight and Dimensions:

  • 5.5″ x Width 17.5″ x Depth 13.5″
  • 19 lbs.

Voltage and current Rating:

  • Input rating US: 20amp/125v
  • Input Rating International (EU/AU/UK): 16amp/250v
  • US Version: Rating is limited by the US Outlet rating of 20amp/125v
  • International(EU/AU/UK) Version: Rating is predicated upon the Schuko Outlet rating of 16amp/250v

Atmosphere A/C Cable

Alter your surroundings.

Euphoria PowerCell Level 3 High Current A/C Specifications:

Air Strings:

  • Silver Air String- 99.999% pure Silver signal conductor, Air (sealed) dielectric
  • Tricon String- Teflon dielectric
  •  Ultra High Current Atmosphere String- Silver Matrix conductors, Modified PTFE dielectric
  • Shielding- Atmosphere Active Shielding

Active Shielding

  • Shielding- Atmosphere Active Shielding
  • Premium Swiss-made onboard Power Supply

Cable Count:

  • Each Atmosphere Level 3 PowerCell power cable is made from 6 separate power cords- 1 pair Ultra High Current Atmosphere Silver Matrix Strings, 1 each Tricon String, 3 each Silver Air Strings, 1 each Silver Active Shielding balanced DC geometry

Active UEF Circuit:

  • Precious metals / Graphene

Passive UEF Filtration:

  • Precious metals / Graphene / Teflon dielectric


  • Synergistic Research G07 Gold Signal Path Wall and 32amp Neutrik Powercon connector

Upgrade (+$3500.00)

Galileo SX Power Cable

We recently upgraded to the Galileo UEF power cord (from the Level 3) on the PowerCell 12 UEF SE.

We were expecting appreciable improvements in clarity and perhaps resolution. Turns out, the benefits were far more substantial – especially from a “musical enjoyment” point of view.

More dimensionally layered sound
Imparts a nice vividness
More contouring and body
Warmer and richer
Much better bass definition and extension
Way smoother. This is probably the most obvious attribute
There’s more elasticity in the sound
Improved timbre
More snap and separation

The Level 3 already sounds great but the Galileo is something else entirely. Said another way – it’s very difficult to go back to the Level 3 cord. A worthy upgrade.

“One interesting option for those who own the Synergistic Research PowerCell 12 UEF SE power conditioner is to replace the Atmosphere power cable that is original to the PowerCell with a Galileo SX power cable. I experimented with this extensively. As those who follow my reviews know, I have stated many times that the PowerCell just might be the most important component in my system for best overall sound quality.”

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Robert Youman - Positive Feedback - October 2018

“Then the Galileo SX power cord arrived. It’s been about a month of enjoyment via the Level 3 power cord, so this would prove to be interesting as I wondered aloud how could this get better than it already is? At first blush, the Galileo SX presented a sweeter and a tad more relaxed soundstage. Images had greater density and specificity as though they were being presented in higher resolution. Gregory Porter’s “Take me to the Alley” for example became even more realistic in terms of color and richness. The sweetness I first detected kept recurring over the course of many listening sessions. But that sweetness was a bi-product of the Galileo SX having less resistence and thus stress. Understand me, you do not get that impression listening to the Level 3 power cord at all, until you compare the two. Once you do that, it’s pretty easy to tell the Galileo SX is just performing at another level.y.”

Read more>

Clement Perry and Bill Wells - StereoTimes - December 2018


"Will the internal struggle to reach nirvana ever end? Probably not. As much as we like to complain about the journey, this is what provides much of the joy and interest in this hobby. The PowerCell SX has the ability to get us amazingly closer and without major upgrades to the rest of the system—closer than any other cable or power conditioner that I have heard in my listening room. The PowerCell SX clearly pushes the envelope. It's only July, but I now have my first nomination for the annual Positive Feedback Writers' Choice Awards. Highly, highly recommended!"

Robert Youman, Positive Feedback, July 2020

Full Review >


The PowerCell SX power conditioner is the most recent evolution of Synergistic’s PowerCell line. Somehow, its sound significantly betters that of its predecessor, the less expensive PowerCell 12 SE, in terms of such things as noise rejection, transient speed, and transparency. But perhaps its greatest achievement is its similar gains in harmonic richness and tonal accuracy -- music’s calling cards. If there’s a better-performing power conditioner out there, I have yet to hear it.

Full Review >


"Will the internal struggle to reach nirvana ever end? Probably not. As much as we like to complain about the journey, this is what provides much of the joy and interest in this hobby. The PowerCell SX has the ability to get us amazingly closer and without major upgrades to the rest of the system—closer than any other cable or power conditioner that I have heard in my listening room. The PowerCell SX clearly pushes the envelope. It's only July, but I now have my first nomination for the annual Positive Feedback Writers' Choice Awards. Highly, highly recommended!"

Robert Youman, Positive Feedback, July 2020

Full Review >


"Writers' Choice Awards" winner

"With the PowerCell 12, all ships rise with the tide. Yes, we have superior levels of isolation which results in an impressive reduction in the noise floor, but all the excitement and dynamic contrast of the recording as originally intended is now laid out for all to hear. In terms of providing clean power, every component in the system has now been maximized for it's best performance and the results have been very clear.

Before spending one dollar on any other upgrade, I highly recommend auditioning the PowerCell 12. This product has made more overall positive impact on my system than any other component over the last several years!"

Robert Youman, Positive Feedback Writers' Choice Awards 2017

See Awards >


Soundstage! Ultra "Product of the Year"

The PowerCell 12 UEF SE just might represent the state of the art of power conditioning. It is a testament to the long way Synergistic Research has come since Ted Denney felt that he had yet to discover a power-conditioning technology worth taking further. But in addition to performance, the PowerCell 12 UEF SE offers high value. You won’t find many, if any, competing models that offer 12 outlets, a topnotch power cord, and an AC wall outlet, all for $5995. And while I’m generally not keen on visual gimcracks, that big window in the PowerCell 12 UEF SE’s top plate presents a display that impresses audiophiles and non-audiophiles alike.

Full Review >


Essentially, the PC12 performed sonically beyond my expectations and without any sort of operational glitch... Bottom line, I couldn’t help but marvel at how the PC12 so effectively got out of the way and provided such an impressive platform of high quality conditioned AC to my system. As I said…”Power to (and for) the People!” Highly recommended for sure.

Bill Wells, StereoTimes, December 2018

Full Review >

In short, the SR PowerCell 12 UEF SE is a breakthrough in what one can expect from an AC line conditioner. It moved my system in a direction that I have always admired and desired. How it improves specific areas like quiet, dynamics, bass and high frequency extension is very apparent. But overall, I would say that the SR PowerCell 12 UEF SE provides a level of sonic purity superior to any AC conditioner I've heard.

Clement Perry, StereoTimes, December 2018

Full Review >


"Synergistic Research has another winner with the PowerCell 12 UEF SE. I was pleasantly surprised if not astonished at the improvement in sound quality over my past benchmark—the excellent PowerCell 10 UEF. Unlike other power conditioners that I have auditioned, the PowerCell 12 UEF SE never feels like it throttles or diminishes the music. Yes, we have superior levels of isolation which results in an impressive reduction in the noise floor, but all the excitement and dynamic contrast of the recording as originally intended is still laid out for all to hear. This one will not be leaving my listening room."

Robert Youman, Positive Feedback, Issue 91, June 2017

Full Review >


"The Synergistic Research PowerCell 12 UEF SE is the quietest and most transparent power conditioner we’ve ever heard. As a consequence, micro/macro details are in full view without losing cohesion, texture, and body. You basically hear more of the music without losing musicality. It provided a new level of clarity, insight, dynamics, and authority while being smooth and euphoric. It is simply an enthralling piece of gear."

Siao Jer,, April 2018

Full Review >


"The resulting impact of these three products is more than the sum of the parts. By that, I mean that with these devices it’s more of a “1+1+1 = 5” effect. The noise floor drops significantly, and with that, I feel like I am hearing everything my system was designed to perform. Honestly, I wish these three devices did not matter as much as they do. It’s a new can of worms to unravel and makes system setup a lot more complex. However, I would never go back to an “untreated” system. The new system sounds more dynamic, more detailed, more lifelike in the soundstage and timbre of the various instruments. In short, it sounds more musical, more real."

Lee Scoggins - Part-Time Audiophile - September 2018

Full Review >

I had a hunch that power conditioning would have a major impact on the performance of my system, but this is beyond anything I could have possibly imagined. What I am hearing now belies common sense, What I’m hearing now is almost terrifyingly beautiful.

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AV Showrooms "2017 Product of the Year"

Synergistic Research Atmosphere Level 4 cables and PowerCell 12 UEF received AV Showrooms 2017 Product of the year.

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PowerCell 12 UEF SE Schuko

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