The ErosTek ET312B was developed in 1999 and has been in continuous production for over 20 years. 

Production relied on components which became harder to source or went obsolete. The technical aspects of manufacturing reached a breaking point during the COVID-19 pandemic. We continued to sell new units using our existing component inventory but soon realized that the final chapter of the ET312B was ready to be written.

ErosTek ET312B


Do you already own an ErosTek ET312B? If so, you may consider yourself lucky. These units are considered my many to be the very best in erotic e-stim power units and most continue to operate even after 10 – 15 years with regular maintenance and repair. We sell Repair Parts for the ET312B so that you can keep your unit running for years and years. And the 1-Year Warranty remains in effect for any units purchased from us in within the last year.


We’ve learned a lot in the last 20 years and seen the changes in technology related to networked devices (IoT), embedded programming and PCB manufacturing technology. We aim to create the very best unit, one that incorporates features we often use but haven’t seen on other devices. We have a lot more options available now that we did 20 years ago. And we also have be nimble and able to move with the current supply chain disruptions, microchip and component shortages to keep the design simple and effective. In short: We are working on it. Stay Tuned.


If you’re in the market for a new e-stim power unit, we offer 3 solid options:
1. ET232 Power Unit and ET232 Package Deal
2. 2B Premium Pack
3. ET302R Remote Power Unit

Each of these offer a set of features designed for those starting out or wanting to get more from their e-stim sessions. 

Thanks again for your support. 

– Eric Forbes 
Owner / CEO
ErosTek / ECForbes Inc.

2020.0621 Modular Drone (Stereo)

Drone City! Pulsating stereo e-stim track made using modular synthesis: Plaits, Maths, Magneto, etc. Feels great driving an ErosTek ET312B or E-Stim Systems 2B.

ET312B Setup: Select Audio 3 mode and set MA control to 12 o’clock with output of music player set to maximum.

2B Setup: Select Stereo mode with output of music player to about 90% maximum.

Channel ACockCap paired with an ECup

Channel BLarge Flo BiPolar

Have fun! -Eric

2020.0516 Pulse Train (Mono)

Here’s a mono track I made while wired up to an ET312B in Audio 3 using a Moog DFAM analog synth. I didn’t listen to this one with headphones while turning the knobs — I just focused on the STIM. Isn’t that the point?

Enjoy! -Eric

ET312B: Select Audio 2 or Audio 3 mode and set MA control to 12 o’clock with output of player set to maximum. You can create a Split with Audio 3 on one channel and a built-in routine on the other, for unique effects.

See ET312B: Set Split Mode to learn how.

ET232: Select Audio Loud mode and set MA control to max with output of player set to maximum.