EMS420 Eikon Metered Supply

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EMS 420 Logo
EMS 420
Made in Canada

Tattoo artists talked, and we listened.

Accuracy and responsiveness are critical during the tattoo process. You need to be able to tap into your desired voltage, with precise response and control. Inaccuracy simply can't happen. So we have completely re-written the operating system, incorporated smart chip technology and made some changes both inside and out.


  • High touch sensitivity voltage adjustment buttons for quick and accurate fine touch adjustments and rapid 0.2 volts/3 x per second coarse voltage adjustments.
  • Sleep Mode - 30 minutes
  • Brightly lit green LCD display and LED buttons
  • Metallic gold fleck green enclosure
  • Durable precision laser cut stainless steel stand
  • Designed and manufactured using 95% North American quality components
Explore & Discover

Explore & Discover

The features of the EMS420

Capacitance Touch User Interface

Illuminated green LED buttons provide quick and accurate activation/voltage adjustments with the touch of a finger. Finely tuned to work flawlessly through barrier controls - even while wearing medical gloves.


Smooth Consistent Power for your Rotary and Coil Machines

Operate both rotary and coil tattoo machines at maximum efficiency without having to switch modes. Improve your machine reliability and efficiency with smooth consistent power output from the EMS420.


LCD Display Screen

Brightly lit green LCD screen that delivers clear, crisp voltage readings to a single decimal point along with all the information important to you during the tattoo process.


Additional Display Reading

Understand more about how your tattoo machine is operating by selecting an additional display reading that most suits your needs. Options include:

  • Cycles Per Second
  • Duty Cycle
  • Follow Through
  • Amps
  • Diagnostics
  • Timer

- or choose Cloak - to hide any of the additional display readings.


Precision Voltage Adjustments

Increase or decrease your voltage in fine precise adjustments of 0.1 volts or rapid coarse adjustments of 0.2 volts.


Four Voltage Presets

Automatically save your last used settings. Preset up to four of your favorite voltage settings and recall them all with the click of a button!


Two Footswitch Modes

Momentary (press and hold) or maintained mode for those times when turning your machine on and off isn't necessary.


Two Timer Modes

Determine the amount of tattooing you're doing by using the Runtime Mode, which activates with each footswitch command or switch to Stopwatch Mode to track your overall session.


Sleep Mode

Resume tattooing at your last used settings after 30 minutes of inactivity with the click of a button (or your footswitch).



Vertical orientation and a narrow profile leaves a small footprint - which leaves you with more space at your workstation. Physical dimensions of 6.5" (L) x 2" (W) x 5.785" (H)


Cables routed out the back

Industry standard ¼" rear facing Mono jacks and power cord connections are routed out the back to reduce the risk of cords interfering with your work.


Gumshoe Sticky Foot

Made from sticky (top secret) silicone to ensure that your EMS420 stays securely in place on your workstation or any hard surface. Can be repositioned without damage to surfaces - allowing you to move your EMS420 to a different workstation or location.


Custom Enclosure

Custom plastic enclosure made of Polycarbonate ABS with a subtle gold metallic fleck. It's designed to withstand harsh surface disinfectants, which can degrade plastics over time.


Laser Cut Steel Stand

Durable, precision laser cut steel stand - hand bent from brushed 10 gauge 304 stainless steel.


Cleaning and Maintenance

Easy to cover and clean with no knobs or plugs to interfere with barrier film application or bagging process.


Worldwide compatibility

Standard socket connection with internal universal power adapter allows for worldwide compatibility. It's as easy as plugging in a region specific power cord (sold separately).




Artist Approved

  • Safwan


    Imago Tattoo (Montreal, QC)

    “I loved my EMS 400. I could've gone with that one until the end of days. I trusted its components, liked its design qualities and always got solid and steady work performance from it, since the very beginning when it was still a prototype. To me it was simply the best power supply I've had the chance to work with.

    And for a while people wondered and speculated... Who was gonna be able to build a power pack that would beat the EMS 400? Surely a big American or European supplier would come up with the '400 killer'... I've seen quite a few unconvincing tryouts. But it was generally agreed that Eikon still had the best piece of hardware on the market. And as far as I was concerned, it seemed normal considering they were the only company in the industry that consistently and seriously invested in research and development. I have to admit that because the EMS was of Canadian make, right here on the East Coast, I was kind of partial to its success. But regardless, ask anyone that ever really gave it a run. It was the best power pack around. Period.

    But that was then. The 420 came along and upped the game. I've had it for a few weeks now and it's definitely the new benchmark. The touch display buttons are way more responsive and the function reaction time is remarkably quicker. The whole thing just feels easier to use. There's no learning curve, no getting used to the buttons. It's just a simple plug and go. Quick, intuitive, practical. And I love the added function that automatically saves the last power setting that differs from the 4 saved presets (you gotta use it to know what I'm referring to). It just all translates to a more fluid experience.

    So yeah, I hate to say it, but there's no turning back now. The 420 is sticking with me while I tattoo the next few hundred kilometers of skin that come my way. The dudes that designed this thing can and should sit on their laurels for a bit. It'll be a while before anyone else can get close to offering such a solid product. Cheers you bastards!”

  • Eric De L'etoile

    Eric De L'etoile

    De L'etoile Tatouage (Laval, QC)

    “Thank you Eikon Device for this awesome surprise! I got to test run the new EMS420 and what can I say besides its the best power unit ever made! Super precise voltage for detail work and skin adaptation. New touch screen is improved, easy to use and set up all presets. Looks fuckin' wicked with the green matrix look! Feels great to be tattooing with a good piece of equipment that's up to todays technology. I fuckin' love it!”

  • Jessica Wright

    Jessica Wright

    Capital Tatoo (Edmonton, AB)

    “This has more balls than me! Being a girl who has always enjoyed the simple things in life, I have always been satisfied using Eikon's more basic model power supplies like the EMS ES300 and the ES200, until I was introduced to the EMS 420. From the moment I saw this product released, I knew it was time for an upgrade and I needed to try this green beauty out for myself.

    The touchscreen is very responsive and much easier to wipe down than the traditional dial setup, which gives me piece of mind that I can maintain a clean work environment. Every function is user friendly and incredibly easy to learn, but my favourite operation is the timer, which is so convenient because it helps me focus more on the project at hand instead of worrying about the clock.

    This product is another one of Eikon's original and unique masterpieces that is unparalleled by the competition.”

Fire it Up

Fire it Up

Step by Step Tutorials

Additional Display

Changing the Contrast

Changing the Footswitch Mode

Changing the Timer Mode

Factory Reset

Menu Mode

Power Function

Preset Function

Sleep Mode

Using Stopwatch and Runtime Mode

Voltage Adjustments

Buy Now

Buy Now

Own the EMS420

Eikon EMS 420
Made in Canada

We took our most innovative power supply on the market today, gathered feedback from artists like you, along with advances in technology and design - and kicked it all up a notch. Prepare to be impressed with the EMS420.


Using outside of North America? Pick up a cordset that's right for your country.