Published: September 2, 2021
Updated: February 8, 2024


The ErosTek ET312B was developed in 1999 and was 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.

If you own an ErosTek ET312B, you may consider yourself lucky. These units are considered to be the very best in erotic e-stim power units and many 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.


New! MK-312BT Now Available

The MK-312BT started as a community, open source project and offers several improvements over the original ET312B:

  • 2x capacity rechargeable battery (for even longer sessions)
  • Quartz crystal oscillator (added stability)
  • Upgraded pots (for MA and outputs A + B)
  • UART chip (improved serial communications)
  • Easy to read, high contrast backlit LCD
  • Deluxe Leadwires (included)

3 responses to ET312B Power Unit : DISCONTINUED

  1. John

    Eric, it’s a bitter sweet moment for me but I’m hoping the next generation Erostek unit will be a success. Thanks for providing me with many many hours of estim pleasure. I currently own 4 ET312B ‘s and alot of your toys/gear. Take care and stay safe.

  2. Jim Nowlen

    Eric sad to see the run end. Love my Et312 and my little 232 as well.

    I feel confident you will create something terrific as your next new power box and hope to be included in any testers you might desire.


  3. Migsy

    This is sad news. I started my buzzfuck journey with the 232 and graduated to the 312 a year later. Been ole faithful ever since.

    The only other box I use is the coyote because it’s newer and “digital” and compact and has some customizations I WISH the 312 had, but the quality of the box leaves much to be desired.

    I’m looking forward to seeing what your newest creation is, and what it can do.

    Greetings from nyc

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