E-Stim Systems 2B NEW MK2B “Black Edition”
Lithium Battery Included, Firmware 2.106
The development of the inaugural E-Stim Systems NEW MK2B took over a year. Since its launch, we’ve continuously refined both the software and accessories. These ongoing improvements have made the NEW MK2B one of the most powerful and versatile E-Stim power boxes on the market. Now known as the Series NEW MK2B, this device is the ultimate choice for those seeking enhanced power, control, and options.
Display & Control: Intuitive and User-Friendly
The E-Stim Systems NEW MK2B features a clear, illuminated LCD display that shows real-time information about your unit’s status. The improved interface makes operation simple and intuitive. You no longer need to memorize confusing codes or decipher blinking lights. The built-in help display guides you through the mode selection process, while adjustable backlighting ensures visibility in dim environments. Switching between modes is quick and easy with a few button presses and a twist of the knob to choose from 17 distinct modes.
Expanded Program Options: Endless Possibilities
The NEW MK2B offers 17 customizable program modes. Beyond the standard modes, we’ve introduced exciting new options to explore e-stim sensations in fresh, innovative ways. You can enjoy split modes, gentle tickling, and dynamic wave functions that offer hours of electrifying pleasure. Plus, the device is upgradeable, allowing you to add new modes as they become available.
Remote Management via Internet: Full Control from Anywhere
For added convenience, the NEW MK2B includes hardware for an optional Digital PC link. This feature allows you to control your unit from a Windows PC or Mac using a USB connection. The free Commander software enables you to manage the device remotely over the internet.
Dual Isolated Channels: Independent Control
The NEW MK2B comes with two isolated output channels, each with independent controls. This design allows you to use multiple bipolar electrodes at once while maintaining separate control for each channel. The output LEDs indicate the current output levels, giving you real-time feedback. Additionally, a join mode lets you combine both channels for enhanced safety and consolidated control. When used with the Triphase cable set, the NEW MK2B unlocks three-dimensional electroplay possibilities.
Unprecedented Power Upgrade: Built-In Lithium Battery
The NEW MK2B includes a 12.6-volt lithium battery, eliminating the 30% power loss that occurred with the old 9V batteries in the previous 2B model. This upgrade guarantees consistent performance with no battery costs or leakage risks. You also have two power settings to choose from, both adjustable from 0 to 100% in 1% increments. The low-power setting is perfect for beginners, while the high-power mode delivers intense output for experienced electrosex enthusiasts.
Note: The NEW MK2B is significantly more powerful than many other units on the market. Use caution when adjusting power levels.
Audio Sound System: Immersive Stereo Experience
Equipped with an adjustable sensitivity internal microphone, the NEW MK2B offers true stereo processing through a 3.5mm stereo input. It connects easily to any MP3 or CD player, and we even supply the necessary cable. Each audio channel is converted into a controlled pulsing output. You can also adjust the response of the audio system to tailor the experience. Unlike other audio-triggered E-Stim devices, the NEW MK2B is designed to work with both standard audio sources and specialized E-Stim audio tracks.
Safety First: Designed with Your Protection in Mind
Safety is a priority with the NEW MK2B. It features output channel isolation, power limiting, and soft-start controls, ensuring that the device always starts at zero when switching modes or turning it on. The unit has been meticulously designed to meet the rigorous safety standards set by regulatory bodies in the US, UK, and Europe.
Featherweight and Portable: Ready for On-the-Go Use
The compact size of the NEW MK2B makes it easy to store and carry in your play bag, providing everything you need for electrifying pleasure wherever you go.
Comprehensive Package: Everything You Need
When you invest in the NEW MK2B, you’re not just getting a device; you’re gaining access to top-tier E-Stim technology. Along with the NEW MK2B, you’ll receive a detailed instruction manual, a protective carry case, and all the necessary batteries and cables to start your journey. And, like all our power units, the NEW MK2B comes with a 2-year guarantee for peace of mind.
2-Year Guarantee
As with all our power units, the NEW MK2B is covered by a 2-year guarantee.
Specifications – NEW MK2B
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Channels/Outputs: Dual Isolated Channels via 3.5mm mono sockets
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Display: Illuminated LCD with high-brightness LEDs indicating channel activity
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Program Modes: 17
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Audio Modes: 2
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Audio Input: Internal Microphone, Stereo Source via 3.5mm Stereo socket
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Input Specification: 33KΩ/500mV
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Controls: Separate controls for channel intensity, mode selection, and adjustments
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Output Waveform: BiPhasic AC
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PC/Mac Link: Optional via Link Cable
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Power (Internal): Lithium Battery, 12.6 Volts, 1.2 Ah
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Power Supply: 12.6 Volts, 500 mA
Important for EU customers:
This device is classified under TARIC code 85432000 – Signal / Function Generators and is customs duty-free. We prepay the import VAT directly to the shipping company, so you won’t incur additional import VAT upon delivery.
Important for US customers:
This product falls under HS code 85432000 (Signal Generators).
A small import duty (usually less than 1 USD for low-value orders) may apply, and the courier might charge a minor handling fee. Sales tax is not prepaid and may be collected at delivery.



















Kai Uwe (verified owner) –
I didn’t think a device under €140 would be this well-built. The signals are clean, and intensity control is smooth and precise.
Compared to the original 2B, the MK-2B feels noticeably stronger.
What really convinced me: no more 9V batteries! The lithium battery lasts forever and is easy to charge.
It’s a seriously good upgrade from the original – and way more affordable.
Lars (verified owner) –
Solid power, fair price!
Been looking for something strong enough that doesn’t cost over 400€. The MK-2B surprised me. Feels better than the Estim 2B (yeah, really!).
I also like that there’s no battery hassle – just charge it and go.
For that price, I’d buy it again anytime. Delivery took around 11 days I think, no issues.
Axel (verified owner) –
Wasn’t expecting that – in a good way
Wow. I’ll be honest – I was skeptical at first because of the low price and shipping from China, but this unit really blew me away.
The MK-2B not only looks sleek, it actually performs. The programs are intense but comfortable, and you can really feel the power behind it.
Best part: no more battery swapping, just charge and enjoy.
For €139 – this is a steal!
Blade (verified owner) –
Way better than it should be at this price. At first I thought this would be one of those “meh, okay” devices. But nope – this thing really delivers.
The MK-2B costs less than a third of the original Estim 2B, but feels more modern, stronger, and no battery drama.
Build quality? Better than expected.
Price? Honestly too cheap for what it does. Please don’t raise it 😅
Domenic (verified owner) –
For €139 this is honestly a great unit. Works perfectly, the battery lasts a long time. Shipping was fast.
Not even close to those cheap China-made estim boxes – this is on another level.
Steve (verified owner) –
Solid device, fair price
I was a bit skeptical at first since I didn’t know the NEW MK-2B model, and it’s quite a bit cheaper than the original E-Stim 2B. But honestly, I was pleasantly surprised.
Build quality seems solid, much better than the original, and everything works as it should. The controls took me a little time to get used to, but after a few minutes it was fine.
What I really like is that you don’t need separate batteries like with the E-Stim 2B – it comes with a built-in lithium battery. Lasts through several sessions without needing a recharge. The intensity is decent, maybe even stronger than I expected.
Shipping took 11 days, which is fine. No extra charges or customs – just arrived like regular mail.
Would buy again.
Mary (verified owner) –
Honestly better than the original 2B
I’ve been using the original E-Stim 2B for a while and decided to give the NEW MK-2B a try out of curiosity. Didn’t expect much because of the lower price, but wow – it’s actually better in several ways.
The stimulation feels cleaner and stronger. I think the upgraded internals (probably the transformers?) really make a difference. Also, not having to deal with 9V batteries anymore is a huge plus – the built-in lithium battery lasts a long time and charges easily.
A really nice feature is the belt clip – it’s super convenient and just cool to have.
The build quality is solid, and overall it feels much more modern. Shipping was smooth – arrived in under two weeks, no extra charges or delays.
Honestly, if you’re thinking about the 2B, I’d say go for the MK-2B instead. I’m glad I made the switch.