Congratulations on purchasing an E-Stim Systems Series 2B™. Given sufficient care your 2B™ unit should give you many years of erotic electro-stimulated pleasure. Before starting always read the instructions and ensure you are completely familiar with all of the controls and the safety warnings prior to use.

We have tried to make the control system simple and easy to use, without compromising on the features available. You should find something for everyone, and if you don’t then let us know.

Key Features

Power and Control

As well as offering all the interesting modes like Pulse, Tickle and Squeeze, the 2B will run in three different power levels. ‘L’ (for LOW power) is the default setting and is ideal for those people who are just starting out on their E-Stim experience, whilst the ‘H’ high power setting takes the 2B unit into a whole new realm of serious power output. Follow the link for more details on the power system.

The 2B can also be operated from the mains via an optional DC/Mains adaptor. This is a high quality switched mode device that is designed to provide the 2B with exactly what it needs in terms of power. We recommend you DO NOT attempt to use other power supplies, as they are not designed for this unit. Doing so may invalidate your guarantee.

What is E-Stim

E-Stim is simply using electricity to stimulate parts of the body. Using a dedicated E-Stim unit, rather than a TENS or home build device ensures you can play safely and gives you a much wide range of sensations to enjoy.

What do you need?

In order for E-Stim to work you need, a power unit, an electrode and a cable to connect the two together. The power box generates the signals that create the sensation. The electrode connects that sensation into or onto the body, depending on what the electrode is. Electrodes can be used on the surface of the skin, or inserted into the lower orifices.

E-Stim requires two points of contact. The current and thus the sensation flows between these two points and you then feel the sensation.

Keep Safe - Play below the waist

Generally we say play below the waist until you understand the issues and risks involved with play above the waist. Remember crossing current from hand to hand can run across the chest and is thus something we would not recommend you do.

Its not all about Power

Power seems to be a major target for many people when purchasing an e-stim unit, but without the understanding of how power relates to play it is difficult to ensure you get the most out of any unit. Units that quote a straight power output such as 80mA are generally TENS based units that give no indication how the generated  waveform actually provides the sensation of power delivery. Like a racing car, power is not just down to horse power  but is related to how it is delivered.

The 2B is considered to be a powerful unit, but if you want even more power, then consider the optional power supply, which will give you around 30% more than battery alone.

Modes for Variety

The 2B has number program modes designed for pleasure and stronger sensations. Don't be surprised if the modes don't give you want you straight away. Nothing ever works for everyone everytime, at least on the default settings, so experiment. Because of the way we have designed the wave forms, not every mode will provide you with sensation at the same point, nor will every mode give you the sensation that someone else feels, even with the same settings. E-Stim is a complex subject almost like an art form for many, and it can take practice to find our what you enjoy. Enjoy the journey.

Waveforms created for Sensation

E-Stim interacts with the nervous system of the body in order to provide a sensation. This means that the nature of the waveform is crucial, providing maximum sensation to the nerves, but with a reduced amount of energy that can cause heating and damage to underlying tissues. All E-Stim Systems devices utilise AC based wave forms so there is no issues with DC causing tissue damage, and the waveforms are developed to maximise the sensation as effectively as possible. 

Feel

Virtually all of our modes have some control over feel. Feel adjusts portions of the waveform to give to a difference in feel, from soft and spiky at one end, to harsh and hard at the other. The choice is down to you, but it gives you more of a range of sensations than normally possible.

Power Control

Power delivery depends on the unit itself, the power source (using a 2B with a power supply with give an increased sensation of power), the Levels set, the settings of the adjustments, the current mode, Box level, output level, electrodes used and electrode positioning. All of these elements combine to give you a wide range of sensation from a tickle up to and beyond a hard throbbing pulse.

Power Levels

The 2B operates in 2 main power settings, with each level having a 0-100% setting. Low Power, is the default, High Power exists for more experienced players.

The 2B unit is an advanced multiple program E-Stim unit designed to be used by beginners and advanced users alike. It has advanced safety features as well as an extensive control system and easy to use controls. We strongly recommend you read the manual from cover to cover, but we have a quick start guide to help you with your first explorations.

Once you have fitted the battery find the on-off slide switch and turn the unit on. Make sure you have nothing else attached to the unit.

The LCD should light up, and text appears.

then the current firmware version will be displayed

If the LCD illuminates, but no text appears then you many need to adjust the contrast. Once your 2B has started up you should see a display similar to

Step 1

Read this manual and familiarise yourself with the controls. 

Step 2

Install a battery

Step 3

Turn the 2B on. (The power slide switch can be found on the bottom of the control unit). The display should light up and the 2B will go through its self test, as well as displaying the firmware version

and then

a couple of seconds later you should see should now see a screen like this.

Now turn the 2B off. If for some reason you see a different display, then you can perform a Factory Reset to get everything back to the default state. 

Step 4

Choose electrodes. The 2B is supplied with a simple set of Sticky pad electrodes and 2mm cables to get you started, but we do offer an ever increasing range of E-Stim Electrodes and accessories. See https://www.e-stim.co.uk and https://www.e-stimsystems.com for more details.

Step 5

Connect things up. Always ensure the 2B is switched off when connecting or disconnecting electrodes.

Step 6 and 7 and 8 .......

Turn the 2B back on

Now you can start experimenting with the modes

Battery Display

The battery level is shown on most displays. because of the differing loads present when stimming the battery symbol may flicker and drop at times, this is perfectly normal. The 2B is also designed to use as much of the battery capacity possible, so as play goes on you may find you need to increase the output levels to compensate for this drop.

Full battery

Battery in use, but not depleted.

Battery nearly empty.

Changing the Battery

The 2B is powered by a single 9V PP3 alkaline battery, or a mains power supply.  Unlike some other units it is also possible to use rechargeable batteries in the 2B control unit with varying levels of success.  We do NOT recommend the use of Zinc Carbon batteries with your 2B control unit.

• Ensure the unit is switched off, and any electrodes are disconnected.

• Turn the unit over and using a small screwdriver or a fingernail inserted into the battery compartment slot, gently prise the battery compartment cover out. 

Remove the old battery (if fitted) and replace with a fresh Alkaline PP3. The battery connector is polarised so it should not be possible to connect the battery incorrectly, but ensure the polarity is correct before attempting connection. 

• Place the battery into the unit and replace the battery compartment cover. The cover is fitted with two tabs which insert into the lower half of the case first, and then the top half of the cover will clip into position.

• Turn the unit over. The unit is now ready for operation.

• Please note we do NOT recommend the use of zinc carbon batteries due to their general poor performance.

 In the event the 2B unit is not being used for a period of time, remove the battery to avoid any potential damage from battery leakage.

It is possible to use an external power supply with the 2B, but because of the isolation and safety issues when connecting to the mains we strongly recommend you only use an E-Stim Systems supplied universal power supply. The plug socket is beside the on off switch.

Always ensure that when you connect the external power unit, the 2B is switched off.

Insert the plug into the socket, switch the mains power on, then switch the 2B on. The display should light up as if batteries were fitted, but the display will be slightly different with a smaller symbol showing.

Use of the power supply will offer around a 30% Power increase. We suggest you remove the internal battery if you are using an external power supply. 

The 2B unit has five user controls. Each control allows the user to adjust a particular aspect of the output. It is the operation of the controls in combination that will allow the user to provide an effective electro-stimulation session.

The controls are (from left to right)

Channel A Level Control

The Select Button

The Adjust Control

Channel B Level Control

There is also a power slide switch (on the bottom side of the unit) and an LCD contrast control (accessed from the rear of the unit.)

Channel Level Controls

The channel level controls adjust the absolute level of the output of the relevant channel.  Each Channel control value is displayed on the LCD screen, with values from OFF (0) to MAX (100%). OFF is zero output, MAX is full output. The output levels automatically drop to OFF when selecting a mode, and will always start off at OFF (0%) when selecting a new mode.

Select Button

The select button is used in conjunction with the Adjust control, to change and adjust the settings in all the various modes, including changing and selecting the modes themselves. The Select Button responds to a light double press, there is no need to press too hard. Pressing and holding the Select Button while rotating the Adjust Control allows further adjustments of the Feel in many modes.

Adjust Control

The adjust control is used in conjunction with the select button, to change and adjust the settings in all the various modes, including changing the modes themselves. 

Depending on the mode, the 'C' and 'D' values can be adjusted using the Adjustment Control. Turning the Adjustment Control either clockwise or anticlockwise will change the 'C' adjustment value up or down, while pressing and holding the select button and turning the Adjustment Control which change the value of the 'D' setting. Not all modes use both the C and D values.

Displays

The 2B has 3 display elements, the bright backlight LCD display, giving the user details of all of the functions of the 2B, from control settings to helpful messages.

The two blue LEDs on the right hand side of the unit illuminate in proportion to the intensity of the relevant output. The LEDs might appear to glow slightly when the unit is turned on and there is no output - this is due to the internal reflection of the backlight and is not a fault.

The LCD display depends on the mode but the basics are:-

Top Line

showing the Mode, (the current program mode) and Adjust Values (Dependant on the Mode, the first value is altered by the Adjust Control Knob and the second value by Select + Adjust Control Knob)

Bottom Line

Showing the Level of Channel A, Join Control Status, Commander Status, Power Mode, Battery Level and the current Level of Channel B. The Arrow present on the bottom line indicates the Commander digital link is available. 

Power Level Display

The Power Level Display shows the current power level the 2B is set to. Options are L - Low, and H for High. For more details on the power level selection system see Power Selection

Battery Level Display

The battery level is shown on most displays. because of the differing loads present when stimming the battery symbol may flicker and drop at times, this is perfectly normal. The 2B is also designed to use as much of the battery capacity possible, so as play goes on you may find you need to increase the output levels to compensate for this drop.

Full battery

Battery in use, but not depleted.

Battery nearly empty.

Adjusting Contrast

To change the contrast of the LCD, turn the unit over, and with a small insulated cross head screwdriver insert into the hole in the rear of the unit and gently adjust the cross head adjustment inside. Adjustments should not be necessary as the contrast is set during testing in the workshops, but may change over time depending on environmental conditions.

<picture to follow>

Outputs

Connection to any electrode is via two heavy duty 3.5mm mono jack sockets. Ensure the 2B is switched off before inserting or removing the connector to eliminate the possibility of either inadvertent electric shocks or short circuits occurring. When removing the connectors. Grip the insulated shaft of the connector, not the wire and gently pull. 

Connections to your E-Stim 2B use industry standard 3.5mm mono jack plugs, compatible with a number of other manufacturers control units and electrodes.

Inputs

Connection to audio devices and the digital link system is via the centre 3.5mm stereo jack socket. Ensure the 2B is switched off before inserting or removing the connector to eliminate the possibility of short circuits occurring. When removing the connectors. Grip the shaft of the connector, not the wire and gently pull. 

 Ensure that audio devices or the digital link are only connected to the centre jack socket. Connecting to either of the output jack sockets will destroy your audio unit. The audio input is designed to operate with low level headphone style outputs. It is not possible to operate the Digital Link at the same time as the Audio Input. The Digital link cable despite appearances is NOT a standard USB cable. DO NOT attempt to attach any other USB cable to the 2B digital link input, you will destroy your 2B and invalidate your guarantee.

DO NOT attempt to connect an output to an input. It will destroy your 2B unit, and possibly the item you connect to.

In Pulse Mode both of the outputs pulse on and off together with equal on and off times. The Adjustment Control allows the user to adjust the pulse rate (how quickly they pulse on and off) and is adjustable from 1 (slow) to 99 (fast). Higher numbers indicate a faster repetition rate. The second value on the display, is the pulse feel, allowing you to adjust the sensation of each individual pulse, from soft to spiky, with values from 1 to 99. The amount of time the pulse is on is equal to the amount of time off.

Selecting Pulse Mode

To select the Pulse Mode, press the Select Button twice and rotate the Adjust Control to select the mode

Now press the Select Button to choose the currently displayed mode.

The screen shows the mode on the top line, then the Pulse Speed and Pulse Feel (50:50), on the bottom line the Channel A Level, Output Power Setting, Battery Level and Channel B Level.

Changing Values

To change the Pulse rate rotate the Adjust Control. You should see the first number on the top right of the screen change. Lower values indicate slower pulses. To change the Pulse Feel press and hold the Select Button while rotating the Adjust Control and you should see the second value on the top right of the screen change. Output levels are control by the Channel Level controls.

Pulse Range

The Pulse Rate is from around 1 second to 0.02 seconds.

Bounce mode is so named because the outputs ‘bounce’ from channel to channel. The outputs pulse alternately. The adjustment control allows the user to adjust the pulse rate from 1 to 99. Higher numbers indicate a faster pulse rate.  As with the pulse mode the second value on the display, is the pulse feel, this allows you to adjust the sensation of each individual pulse, from soft to spiky, with values from 1 to 99.

Channel A is on when channel B is off and visa versa.

Selecting Bounce Mode

To select the Bounce Mode, press the Select Button once and rotate the Adjust Control to select the Bounce mode.

Now press the Select Button to choose the currently displayed mode.

The screen shows the mode on the top line, then the Bounce Speed and Bounce Pulse Feel (50:50), on the bottom line the Channel A Level, Output Power Setting, Battery Level and Channel B Level.

Changing Values

To change the Bounce rate rotate the Adjust Control. You should see the first number on the top right of the screen change. Lower values indicate slower bounces. To change the Bounce Pulse Feel press and hold the Select Button while rotating the Adjust Control and you should see the second value on the top right of the screen change. Output levels are control by the Channel Level controls.

Bounce Range

The Pulse Rate is from around 1 second to 0.02 seconds.

In Continuous Mode both of the outputs are active. The Adjustment Control allows the user to adjust the sensation of the outputs, from soft to spiky, with values from 1 to 99. 

Selecting Continuous Mode

To select the Continuous Mode, press the Select Button once and rotate the Adjust Control until the screen shows 'Continuous'.

Now press the Select Button to choose the currently displayed mode.

The screen now shows the mode on the top line, then the Feel (50). On the bottom line the Channel A Level, Output Power Setting, Battery Level and Channel B Level.

Changing Values

To change the continuous feel rotate the Adjust Control. You should see the number on the top right of the screen change. Output levels are controlled by the Channel Level controls. 

In Split modes the outputs are split between Pulse and Continuous. In A Split mode Channel A output is continuous, Channel B is pulsed. In B Split mode Channel B is continuous and channel A is pulsed. The adjustment control allows the user to adjust the pulse rate from 1 to 99, with low numbers indicating a slow pulse. The second value, is the pulse feel, that allows you to adjust the sensation of each individual, from soft to spiky, with values from 1 to 99.

In Split Mode one channel has a continuous output, the other output pulses on and off together with equal on and off times. The Adjustment Control allows the user to adjust the pulse rate (how quickly they pulse on and off) and is adjustable from 1 to 99. Higher numbers indicate a faster repetition rate. The second value on the display, is the pulse feel, allows you to adjust the sensation of each individual pulse, and well as the feel of the continuous output from soft to spiky, with values from 1 to 99. The amount of time the pulse is on is equal to the amount of time off.

Selecting Split Mode

To select the Split Mode, either A Split  or B Split,  press the Select Button once and then rotate the Adjust Control to select the chosen mode

Now press the Select Button to choose the currently displayed mode.

The screen shows the mode on the top line, then the Split Pulse Speed and Pulse Feel (50:50), on the bottom line the Channel A Level, Output Power Setting, Battery Level and Channel B Level.

Changing Values

To change the Pulse rate of the pulsing channel rotate the Adjust Control. You should see the first number on the top right of the screen change. Lower values indicate slower pulses. To change the Pulse Feel press and hold the select button while rotating the Adjust Control and you should see the second value on the top right of the screen change. Output levels are control by the Channel Level controls.

Pulsing Channel Range

The Pulse Rate on the pulsing channel is from around 1 second to 0.02 seconds.

The output level increases from 0% to the selected limit and then instantly drops back to 0% The adjustment control controls how fast the level goes up, with values from 1 to 99. The second value, is the pulse feel, that allows you to adjust the sensation of the pulse stream, from soft to spiky, with values from 1 to 99. With different values for the left and right channels levels, it is possibly to adjust the synchronicity of the outputs, with one channel rising and dropping faster than the other.

Since the cycle runs from 0% to what ever level you have set, say 33%, the cycle will be shorter and thus faster with smaller level values. So 0-10% will appear to cycle faster than 0-50%.

TIP : If you want both channels to cycle together with the same settings, use the Join Controls Option before you set the mode.

To Select Wave Mode

To select the Wave Mode, press the Select Button once and rotate the Adjust Control to select the mode

Now press the Select Button to choose the currently displayed mode.

The screen shows the mode on the top line, then the Step Speed and Output Feel (50:50). On the bottom line the Channel A Level, Output Power Setting, Battery Level and Channel B Level is shown.

Changing Values

In Wave mode the output rises from 0% to the currently selected Level for the channel and then drops back to 0% before repeating again.

So if Channel A is set to 10%, then the level will increase from 0% to 10% in a number of steps and then instantly dropping back to 0%. The speed of the increase is controlled by the Adjust Control and the Ramp Speed Option. Because the channel drives are independent, it is possible to have one channel rising and dropping at a different rate to the other. As Wave cycles between zero and the Channel level set, there is no output with levels set to 2% or below.

The rate of change is from around 1 second to 0.02 second.

The output level increases from 0% to the selected limit and then reverses and gradually drops back to 0% The adjustment control controls how fast the level goes up or down, with values from 1 to 100. The second value, is the pulse feel, that allows you to adjust the sensation of the pulse stream, from soft to spiky, with values from 1 to 100. With different values for the left and right channels levels, it is possibly to adjust the synchronicity of the outputs, with one channel rising and dropping faster than the other.

To Select Waterfall Mode

To select the Waterfall Mode, press the Select Button once and rotate the Adjust Control to select the mode

Now press the Select Button to choose the currently displayed mode.

The screen shows the mode on the top line, then the Step Speed and Output Feel (50:50). On the bottom line the Channel A Level, Output Power Setting, Battery Level and Channel B Level is shown.

Changing Values

In Waterfall mode the output rises from 0% to the currently selected Level for the channel and then gradually drops back to (at the same rate as the increase) 0% before repeating again.

So if Channel A is set to 10%, then the level will increase from 0% to 10% in a number of steps, and then gradually back down to 0% The Speed of the increase is controlled by the Adjust Control and the Ramp Speed Option. Because the channel drives are independent, it is possible to have one channel rising and dropping at a different rate to the other. As Waterfall cycles between zero and the Channel level set, there is no output with levels set to 2% or below.

 The rate of change is from around 1 second to 0.02 seconds.

The pulse rate increases and then drops to nearly continuous producing a synchronised ‘squeeze’ sensation. Both Channel A and Channel B pulse at the same rate. The adjustment control controls how fast the pulse rate goes up or down with values from 10 to 100. The second value, is the pulse feel, that allows you to adjust the sensation of each individual pulse, from soft to spiky, with values from 1 to 100.

To Select Squeeze Mode

To select the Squeeze Mode, press the Select Button once and rotate the Adjust Control to select the mode

Now press the Select Button to choose the currently displayed mode.

The screen shows the mode on the top line, then the Step Speed and Output Feel (50:50). On the bottom line the Channel A Level, Output Power Setting, Battery Level and Channel B Level is shown.

Changing Values

In Squeeze mode the pulse speed rises from slow to fast producing what feels to many as a squeezing action. Both Channel A and Channel B 'squeeze' at the same rate.

 To Change the range of squeeze, use the Adjust Control. Low values will give a slower squeeze rate. To change the Feel, press and hold the Select Button and rotate the Adjust control.

The pulse rate increases and then drops to 0 (continuous). This is similar to Squeeze, but with a immediate drop in the pulse rate at the end of the cycle. The Adjust Control controls how fast the pulse rate goes up or down with values from 10 to 100. The second value, is the pulse feel, that allows you to adjust the sensation of each individual pulse, from soft to spiky, with values from 1 to 100.

To Select Milk Mode

To select the Milk Mode, press the Select Button once and rotate the Adjust Control to select the mode

Now press the Select Button to choose the currently displayed mode.

The screen shows the mode on the top line, then the Step Speed and Output Feel (50:50). On the bottom line the Channel A Level, Output Power Setting, Battery Level and Channel B Level is shown.

Changing Values

In Milk mode the pulse speed rises from slow to fast??? producing what feels to many as a squeezing action. Channel A and Channel B 'squeeze' at alternates rates, giving a milking action.

To Change the range of squeeze, use the Adjust Control. To change the Feel, press and hold the Select Button and rotate the Adjust control.

A continuous mode with the pulse feel cycling between two values. Nice and relaxing. Adjustments values are between 10 and 99.

To Select Throb Mode

To select the Throb Mode, press the Select Button once and rotate the Adjust Control to select the mode

Now press the Select Button to choose the currently displayed mode.

The screen shows the mode on the top line, then the Feel Adjustment Value. On the bottom line the Channel A Level,  Output Power Setting, Battery Level and Channel B Level is shown.

Changing Values

In Throb mode the pulse feel rises from soft to Hard producing what feels to many as a squeezing or 'kneading' action. Both Channel A and Channel B 'Throb' at the same rate.

 To Change the range of squeeze, use the Adjust Control.

The Adjust Control will control the upper limit of the cycle i.e the hard end of the cycle, so the cycle will run from 10 to the limit set. If you attempt to reduce the upper limit below 10 then it will be set to 10.

Similar to Throb, Thrust is a continuous mode. with the pulse feel cycling between 10 and the adjustment value and then back to 0. Adjustments values are between 10 and 100.

To Select Thrust Mode

To select the Thrust Mode, press the Select Button once and rotate the Adjust Control to select the mode

Now press the Select Button to choose the currently displayed mode.

The screen shows the mode on the top line, then the Feel Adjustment Value. On the bottom line the Channel A Level, Output Power Setting, Battery Level and Channel B Level is shown.

Changing Values

In Thrust mode the pulse speed rises from slow to fast??? producing what feels to many as a squeezing action. Both Channel A and Channel B 'squeeze' at the same rate.

To Change the range of squeeze, use the Adjust Control.

The Adjust Control controls the upper limit of the cycle. If you attempt to reduce the upper limit below 10 then it will be set to 10.

The random mode is designed to produce a random pulse output the adjustment control allows the user to adjust the ‘randomness’ of the pulse range, from 2 to 100. Lower numbers give a much faster random pulse stream. The second value, is the pulse feel, that allows you to adjust the sensation of each individual pulse, from soft to spiky.

To Select Random Mode

To select the Random Mode, press the Select Button once and rotate the Adjust Control to select the mode

Now press the Select Button to choose the currently displayed mode.

The screen shows the mode on the top line, then the Random Delay Value, and the Feel Adjustment Value (50:50). On the bottom line the Channel A Level, Output Power Setting, Battery Level and Channel B Level is shown.

Changing Values

Random is a pulsed mode, with random on time, and random off time, the random value is between 0 and the Random Delay Value. A higher Random Delay value of say 100 will give more randomness than a value of 10.

Step mode is designed to step the output up in individual steps, allowing the subject to get used to the current level, before the output is stepped up to the next level. The output steps between 0 and the current Channel level with a delay between step controlled by the Adjust Control, from 1 to 100.

The second value, is the pulse feel, that allows you to adjust the sensation of the pulse stream, from soft to spiky. Each step is set to 1%. Lower values, give a faster step. Because of the delay of the programmed step, any changes in output level, will only occur at the next step change.

To Select Step Mode

To select the Step Mode, press the Select Button once and rotate the Adjust Control to select the mode

Now press the Select Button to choose the currently displayed mode.

The screen shows the mode on the top line, then the Step Delay Value, and the Feel Adjustment Value (50:50). On the bottom line the Channel A Level, Output Power Setting, Battery Level and Channel B Level is shown.

Changing Values

Channel A and Channel B Level controls set the limit of the step. The Difference between 0 and the Levels set is divided by 8 and this is the value of each step. The time each step changes is controlled by the Adjust Control, To Change the feel of the steps, Press and hold the Select Button and rotate the Adjust Control.

The training mode is similar to the Step Mode , but the steps are much bigger, requiring the subject to learn to ‘enjoy’ each step before the output is stepped up to the next level. The output steps between 0 and the current Channel level. Each step is 1/12 of the total Channel level or 1% if the channel level is set to 12% or lower, so if Channel A is set to 48%, the steps will be 4%, 8%, 12% up to 48%, and then dropping to zero. The Adjust value allows you to adjust the delay between level changes, from 2??? to 100. The second value, is the pulse feel, that allows you to adjust the sensation of the pulse stream, from soft to spiky. Lower values, give a faster step. Because of the delay of the programmed step, any changes in output level, will only occur at the next step change.

To Select Training Mode

To select the Training Mode, press the Select Button once and rotate the Adjust Control to select the mode

Now press the Select Button to choose the currently displayed mode.

The screen shows the mode on the top line, then the Step Delay Value, and the Feel Adjustment Value (50:50). On the bottom line the Channel A Level, Output Map, Output Power Setting, Battery Level and Channel B Level is shown.

Changing Values

Channel A and Channel B Level controls set the limit of the step. The Difference between 0 and the Levels set is divided by 8 and this is the value of each step. The time each step changes is controlled by the Adjust Control, To Change the feel of the steps, Press and hold the Select Button and rotate the Adjust Control.

The Microphone Mode uses the internal microphone to stimulate the outputs. As the internal microphone is a mono source, both the outputs are stimulated together. The stereo bargraph display indicates the relative input level. The A and B controls control the percentage of the input from the microphone that is passed through to the outputs, and the Adjust Control set the level at which the 2B will respond to the  outputs. A low adjust level will make the 2B more responsive.

To select Microphone Mode

Press the Select Button and rotate the Adjust Control to show

 Press the Select Button again to select the Microphone mode

The display shows two bargraphs on the top line, together with the Adjust Level Control. The bottom line shows the Channel A output Level, the Current Output Map. the Microphone sensitivity setting, and the Channel B level. The battery status is not show in audio modes.

The built in microphone has no external connections, and is sensitive enough to pickup a conversation (depending on what level the microphone is set to) from several feet away. Obviously this depends on the ambient level of sound. The placement of the microphone is close to the channel A control knob.

Microphone Adjustment

The Microphone Adjust control changes the response of the  DSP (Digital Signal Processor) system, giving you even more control over the response of the Microphone. Because the DSP code is designed to create sensation from complex audio sources such as music or your voice, the effects of the adjust control will vary depending on the audio used.

Overdriving

It is possible to overdrive the audio section of the 2B. This results in a reduction of sensation as the nuances of the audio input are lost. If the display appears to be a solid bar, then you are probably overdriving the 2B. Either move the 2B away from the audio source, or change the Microphone Level selection.

To Exit the Microphone Mode

In order to exit from the microphone mode press the select button, or turn the unit off.

Microphone sensitivity

The overall sensitivity of the Microphone can be adjusted with the Microphone Level option, with settings allowing x1 (normal), x2, and x4 responses. Higher levels might be inoperable in noisy environments.

The stereo input allows you to use the line in input to stimulate the outputs, from a source such as a CD/MP3 players. The left audio channel activates the A output channel, the level indicated by the A: and the left hand bar graph, whilst the B channel level is indicated by the B: and the right hand bar graph the right audio channel activates the B output channel. The bargraph display indicates the relative input level of each channel.

How it works

The A and B controls control the percentage of the audio drive that is passed through to the outputs. The relationship between the Input and the output is complex as we use a unique DSP (Digital Signal Processor) to provide you with a more interesting output compared to StereoStim devices.

The adjust control allows you to change the speed of the response of the stereo system, indicated by the third value. A low value gives a smoother response, a higher values gives a sharper response.

You should aim for maximum movement in the bar graph. If the bar graphs are ‘full’ you should reduce the output volume of the device you are driving the 2B with, if there appears to be no bar graph then turn the volume control up.

To select Stereo Mode

Press the Select Button and rotate the Adjust Control to show

 Press the Select Button again to select the Stereo mode

The display shows two bar graphs on the top line, together with the Adjust value. The bottom line shows the Channel A and channel B Level. The battery status is not show in audio modes. The Stereo mode does not make use of the output map, hence the reason it is not shown.

Overdriving the Input

The input level is controlled by your audio source. It is suggested you adjust your input source to ensure the input is not being over driven.  (the bar graphs on the 2B should not appear as a solid stationary bar.Over driving the input does not increase the output level, and it does loose some of the nuances of the audio input.

Response Adjustment

The adjustment control changes the response of the DSP (Digital Signal Processor). Since the 2B is designed to operate with complex audio sources, the response control gives allows you to 'tune' the response of the 2B more to your own tastes. Experiment to find what works for you.

To exit the stereo mode, simply press the Adjust button. 

Laptop Detection Issues

Some Laptops may incorrectly detect the Digital link on the shared audio port when running in other modes. If this is the case, switch to Stereo Mode BEFORE connecting the audio cable to your laptop, or use an alternative audio source.

Tickle mode is designed to be a sensation mode rather than a harder feeling program. In the same way you would not expect a harsh beating from a feather, Tickle gives a light controllable touch that can tantalise.

Selecting Tickle Mode

To select the Tickle Mode, press the Select Button once and rotate the Adjust Control to select the mode

Now press the Select Button to choose the currently displayed mode. In this case Tickle Mode.

The screen shows the mode (Tickle) and Feel (50) on the top line, then, on the bottom line the Channel A Level, Output Map, Output Power Setting, Battery Level and lastly the Channel B Level.

Using Tickle

Increase the Channel Level above 1%. Now rotate the Adjust control, you should see the active channel LED flicker. This is Tickle mode in action. Output  in Tickle mode is ONLY ACTIVE when the Adjust knob is being rotated and the level for a channel is greater than 0%. When you stop rotating the Adjust control, The output will stop.

Tickle mode is  exactly what it says  - a 'Tickle'. If you want a more pronounced sensation, then increase the level, adjust the Feel (Press and Hold the select button while turning the Adjust control to change the Feel Level) or spin the adjust control faster 

Output levels are control by the Channel Level controls and would normally need to be set higher that you would normally use on other modes.

Tickle mode is not accessible from Commander.

*The Backlight control is being phased out for later hardware versions. (post November 2023). 2B powerboxes produced after this date may have the menu option available, but the backlight will be on all the time. This is not a fault!!

 
The 2B Digital LCD display has a user controllable backlight. It runs in 3 different modes.

Off                          The backlight is off all the time, apart from when the unit is first

                                switched on.

On                          The backlight is on all the time.

Auto                      The backlight is turned on whenever mode select is entered, and

                                turns off approximately 7 seconds after exit. This is the default mode.

To Change the Backlight Mode

Press the Select Button. on the front of your 2B. This will take you into the mode select option system.

Now Rotate the Adjust Control until you see 21 Backlight

 Press the Select Button,

now rotate the Adjust Control until you see either On

or Off

or Auto

Now press the Select Button to select the your chosen backlight status. The display will change change back to the default mode

The 2B is capable of operating in two power levels, indicated by a ‘L’ or ‘H’ in the display (centre bottom line). This gives you a wide range of play compared to single level units as each power setting is controllable from 0-100%. These is some overlap between low and High, so experiment to find a level suitable for your needs.If you don't want the risk of going too high, then stick to using the LOW setting

Don't forget than using an E-Stim Systems Power supply will automatically give you around a 30% increase in power, and will last far longer than a battery.

To Change the Power Level

Press the Select Button. on the front of your 2B. This will take you into the mode select option system. The initial mode show will depend on what mode you where in before pressing the Select Button.

Now rotate the central Adjust Knob clockwise until you can see the 'Power Level' Option on the LCD screen.

Press the Select Button. The exact Power level shown on initial entry into the Power level selection is set by what ever was last set .

By rotating the Adjust Control you can cycle between the different power  levels.

Once you have chosen the power level you require, press the Select button to engage the level. The 2B will now jump back to the mode select screen,

Choose your mode and continue to play with the new power setting.

Power Levels

 As mentioned above, once you have selected the power level, the 2B will stay in the same power setting until either you select the other power mode, turn the unit off or perform a Factory Reset. 

The currently selected power mode is displayed on all program screens as a ‘L’ or ‘H’

The battery level indicator shows the current level of the battery. There are 4 battery level symbols, indicating Battery FULL, 2/3 full, 1/3 full, and Battery empty. If you have plugged in the optional mains power supply then the battery symbol will not display. As the 2B uses a standard alkaline 9V PP3 battery, a brand new battery should show full*, however the unit will continue to operate with ‘flat’ batteries with a reduced output. This is designed to allow you to make the most out of a battery.

If your 2B starts to reset itself when higher power levels are selected, then this is generally a sign the battery might need replacing.

The battery level display will update whenever a control is adjusted. Due to processor constraints the battery symbol does not display in the Audio Modes.

*Because of the variations in battery manufacturing technology, a brand new battery may not necessarily display a full battery symbol.

The inbuilt microphone system can be made more sensitive by selection the level. x1 is normal, increased sensitivity is available from x1 to x16. Higher levels many not be operable in a noisy environment.

To Change the Microphone Level

Press the Select Button. on the front of your 2B. This will take you into the mode select option system. The initial mode show will depend on what mode you where in before pressing the Select Button.

Now rotate the central Adjust Knob clockwise until you can see the 'Mic Level' Option on the LCD screen.

Press the Select Button. The exact microphone sensitivity level shown on initial entry into the microphone level selection is set by what ever was last set.

By rotating the Adjust Knob you can cycle between the different microphone sensitivity. 

Once you have chose the level you require, press the Select button to engage the sensitivity. The 2B will now jump back to the default Pulse mode.

A number of settings are retained when your 2B unit is switched off. These settings are retained even if the battery is removed. To clear these settings select the factory reset option. The options that are changed during a factory reset are

• Mode is set to Pulse
• Join controls are switched off.
• Power Level is set to Low
• Microphone is set to x1

It is important to perform a factory reset whenever you update the firmware on a 2B. Failure to perform a factory reset after updating the Firmware may result in unusual or incorrect operation of your 2B.

To perform a Factory Reset

Press the Select Button. on the front of your 2B. This will take you into the mode select option system.

Now rotate the central Adjust Knob clockwise until you can see the 'Full Reset' Option on the LCD screen.

Now press the Select Button to choose the Full Reset Mode.

If you do not wish to perform a factory reset at this time, then simply press the Select Button and the factory reset will be cancelled. If you do with to continue, then rotate the Adjust Knob to show the following display;

and now press the Select Button. The factory reset will be performed and the 2B will be returned to the default Pulse Mode.

Video - How to Factory Reset a 2B

Joining Controls (A+B Mode)

When you first switch your 2B unit on, both the Channel A and Channel B controls are independent. However If you select the join mode (A+B) then the two controls become linked, giving you effectively one handed operation.

When you turn the Channel A control up, the Channel B value will also rise, if you turn it down, the Channel B channel will reduce as well. If you adjust the Channel B control when the join mode is active, then you can adjust the relative levels of each channel.

To Join or unjoin the Controls

Press the Select Button. on the front of your 2B. This will take you into the mode select option system.

Now Rotate the Adjust Control until you see 20 A&B Chan Link

 Press the Select Button,

now rotate the Adjust Control until you see either On

or Off

Now press the Select Button to select the your chosen join status.

You can see the current join status from the display. If join is active a '>' will be shown to show the current master control, in this case Channel A.

The E-Stim Systems 2B contains on board programs, the 'Firmware', that can be updated by the user. To do so you will need a PC or Mac computer running Windows or MacOS, and a Digital Link Interface system, available from E-Stim Systems. The software required to perform the update 'UpLink' is only available as part of the Digital Link Interface.

Where to Buy

Digital Link Pack (UK/ Europe)

Digital Link Pack (US / Rest of the World)

Or any good stockist of E-Stim Systems Products.

To switch the 2B into Bootloader Mode, remove ALL cables from the 2B, press and hold the Select switch and then turn your 2B on. The display should now show a 'B'. This is the bootloader mode.

 For more details on how to use UpLink, and the bootloader system to update your 2B, visit https://e-stim.info/uplink

For more details on how to control your E-Stim Systems 2B from a computer visit https://e-stim.info/commander

E-Stim Commander allows control via a PC, as well as the ability to record and playback 'sessions' from your PC or Mac.

It is possible to control the E-Stim Systems 2B over the internet with the optional Digital Link Interface. For more details of the Systems see our E-Stim Connect pages at https://e-stim.online.

E-Stim Connect is a secure and simple to use web browser based interface. Because it is web based, it is useable from any modern computer or mobile device with an internet browser and internet access.

Do not use solvents to clean your 2B. A gentle wipe with a soft cloth is all that is needed. It is not possible to sterilise the control unit.

In the event your 2B is not going to be used for long periods of time it is recommended you remove the battery.

E-Stim Systems is a multi award winning company and we have been creating dedicated Erotic Electro Stimulation systems since 2004.

We don't make anything else and with a wide range of designs, we are considered by many to be the experts when it comes to erotic electro play. We ship around the world, from two webstores (https://www.e-stim.co.uk for UK and the EU, https://www.e-stimsystems.com for the US, Canada, Australia and the rest of the world.) We also have an active user support forum at https://www.e-stim.net and a growing YouTube Channel https://www.youtube.com/estimsystems

Quality for Life

All of our Premium electrodes and Power units are designed and manufactured in the UK and come with a lifetime guarantee.

US Regulatory Wireless Notice

This device compiles with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

The FCC requires the user to be notified that any changes or modifications made to the device that are not expressly approved by E-Stim Systems Ltd may void the users authority to operate the equipment.

European Union Notice

Products bearing the UKCA and CE marking comply with the EMC Directive (2014/30/EU), and the Low voltage Directive (2014/35/EU) issued by the Commission of the European Community.

This device may be used in the UK and all European Union Countries.

Type BF outputs

All images and text within this manual are ©E-Stim Systems Ltd 2007-2023

EBox™, EBox 2B™, 2B™, Uplink™, Commander3™ Commander4™, E-Stim Connect™ and derivative terms are trademarks of E-Stim Systems Ltd.

All rights reserved. E & OE.