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Now shipping with 2.106 Firmware

Free ShippingThe 2B™

It took over 3 years to develop the first 2B, and it continues to feature regular updates to its software and accessories, resulting in one of the most powerful and versatile E-Stim power boxes available on the market today. Officially called the Series 2B, or 2B for short, if you are looking for more power, more control, and more options then the 2B is your only choice.

Display & Control

The clear backlit LCD display on the 2B shows you exactly what your unit is up to all of the time, with an enhanced user friendly display and control system making it easy to use and giving you even more control. There is no need to learn any funny codes or count flashes. A built in help display guides you through mode selection, whilst the back light options allow visibility in the darkest dungeon or play space.. Changing mode is simple - A couple of quick button presses and the twiddle of a knob to choose 1 of 17 modes. It's simple. It works.

More program modes

The 2B has 17 fully adjustable program modes. With all of the more standard modes present, we have added some new ones so you can now throb and thrust your way to e-stim ecstasy and pleasure. Split modes, tickle, and programmed wave functions all pack the 2B with hours of e-stim pleasure - and since the 2B is upgradeable, you can add new modes and functions when they are released.

Internet Control

The 2B is fitted with the hardware for a optional Digital PC link,which allows you to control your 2B directly from your Windows PC or Mac via a USB connection, and the free Commander software also offers computer to computer control over the internet.

Dual isolated channels

The 2B features two completely isolated output channels, with independent controls on each channel. This allows you to use multiple bipolar electrodes at the same time, and be able to control them both, independently. The output LED's light up in proportion to the output levels so its possible to see what's going on without consulting the main display. With the join mode it is possible to join both channels together, giving safety and control in one and with the Triphase cable set, even more possibilities are available. (Think 3D Electroplay).

More powerful than ever

The 2B can be powered via single 9V battery, or an optional universal mains adaptor - the choice is yours. With dual power settings so you can run in low or high power, and each power setting is controllable from 0 to 100% in 1% steps. Low power gives an excellent introduction to E-Stim whilst the high power setting offers really serious levels of output designed to satisfy the most ardent electrosex player, without causing too much pain!! and if the standard high power mode is not enough then you can connect the optional universal mains power adaptor (110V/220V) giving you around a 30% increase in power output as well as longer play times.

Warning the 2B is considerably more powerful than many of the units available today you have been warned.

Audio system

The 2B is fitted with an adjustable sensitivity built in microphone (no external microphone to break off or loose) and the 2B also offers true stereo processing, via a 3.5mm stereo input. Designed to plug into the headphone socket of an MP3 or CD player,(we even supply the cable) each audio channel is translated to a powerful controlled pulsing output. As an additional control it is possible to adjust the whole response of the audio processing system, providing a unique insight to stereo based E-Stim. Unlike other audio triggered stim units the 2B is designed to use normal audio sources as well more specialized E-Stim audio tracks, available as free downloads from https://e-stim.info/downloads/audio.


With output channel isolation, built in power limiting and soft start controls (they always start at zero whenever you change a mode or switch the unit on), together with a design ethos that stresses safety at every stage the 2B has been designed to be compliant with all of the major US, UK and European safety standards, and carries a CE mark.

Lightweight and portable

The 2Bis small enough to slip into a play bag, it's all you need for electro pleasure and torment.

A complete solution
With all of our e-stim technology you are not just buying a box, you are purchasing a serious introduction into the E-Stim world, from a company that is dedicated to producing the best in E-Stim technology. We include a comprehensive instruction manual as well as a protective carry case and the batteries and cables you need to get started. and don't forget the 2B, like all of our power units, is covered by our lifetime guarantee.

Lifetime guaranteeLifetime Guarantee

Like all of our other power boxes, the 2B is protected by our lifetime guarantee.

Specifications - 2B

Channels/ Outputs Dual Isolated Channels via 3.5mm mono sockets
Display Backlit LCD with High Brightness LED's indicating Channel activity
Program Modes 17
Audio Modes 2
Audio Internal Microphone, Stereo Source via 3.5mm Stereo socket
Input Specification 33KΩ/500mV
Controls Independent controls for Channel intensity, mode selection and adjustment.
Output Waveform BiPhasic AC
PC/Mac Link Yes, Via optional Link Cable
Power Supply Standard 9 Volt Alkaline (PP3)
Optional Power Supply
Dimensions (approximate.) 145mm x 80mm x 50mm
(5 3/4" x 3 1/4" x1")
Weight (with batteries) 500g
Supplied Accessories

2 off 3.5mm to 2mm output cable,
4 off Self Adhesive Electrode Pads,
1 off 3.5mm Stereo input cable,
1 off PP3 Battery
1 off Carry Case
User guide.

Guarantee Lifetime

User Manual

E-Stim Systems 2B User Manual (v2.106 Firmware)

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Kenneth B.
5 of 5 Stars
Best purchase of the year, and last year as well! I have use a Tens7000 unit for about 5 years and had an HFO about 3 times. I’ve had the 2B for about a month and have had 7 in maybe 10 sessions. I love the ability to connect to my computer and the huge number of available files. So far I am not liking most of the built in files on the 2B, just deliver pain to me, so I use continuous mode to warm me up, then I’m off to the files I’ve downloaded or the Milovana Estim stories. I should throw 90 % of my other toys away, and keep the Tens for actual therapeutic use!
Mike C.
5 of 5 Stars
I wasn't sure what unit I should get, but glad I bought the 2b. The power is great even on the low battery setting. There is a variety of settings, although I enjoy the "waterfall" the most. Haven't tried the audio yet as I don't have an MP3 player. Wondering if my smartphone would work for this??? Solid and well made.
Charles A.
5 of 5 Stars
Oh My God. Absolutely Great!! Multiple patterns, and audio from an MP3 player is the bomb. Quality construction, accurate waveforms and tons of output power, this is the unit to get!
Daniel A.
5 of 5 Stars
They say the 2B is the most powerful power box they have and in my honest opinion they are right. Much more powerful than I thought and the adjustability the 2B provides is INCREDIBLE! I can adjust the unit in so many different ways which can bring so many different pleasurable sensations in so many ways. Big bonus that it comes with its own carry case to keep it all neat and packed and the fact that the 2B is upgradable as well is pretty awesome. I'd definitely recommend the 2B to every electro lover and a must to everyone's collection. If you don't have the 2B yet trust me you are missing out!
Jon C.
5 of 5 Stars
The 2B Power Box is simply incredible. The adjustability of the 2B is almost unbelieveable. The 2 channel with multiple pulse choices allows great flexibility. This is the best power box I have ever used and is well worth the price.
Curtis H.
5 of 5 Stars
LOVE this unit. It has way more power than I can withstand haha. I love it. So many features and options. Anyone whose reading these before purchase, just know, if you purchase this, you will not be disappointed at all. It’s awesome. One caveat though, you have to be in the 35-40% range on the power output setting before you begin to feel it. I thought mine was broke cus I feel nothing under the 35% output power setting. Not sure what 1%-34% setting is for lol. I feel nothing when in that range. But 35 and above, it very very very quickly becomes to much power lol. I can’t stand anything over 45% right now lol. Always trying to increase a tad each use to get used to the power. Boy, I’m writing this review from my phone at work. I feel a hard coming on just thinking about it lol! I love it. Definitely purchase the optional power cord though. Forget the battery. I’ve used he power cord since day 1. It increases power by 30% and unlimited time use. Battery would likely die 1/2 way through

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