Due to the ongoing severity of the COVID-19 epidemic, we are temporarily suspending our operations. While we will not be accepting any orders or returns, we are available to assist current customers as needs arise.

This was not an easy decision, however we have always held a strong stance that safety is of paramount priority when it comes to Transcranial Direct Current Stimulation (tDCS). We have gone to extensive lengths to ensure our products are safe, our customers stay safe, and have even blown the whistle when finding other companies selling risky, sub-par tDCS devices. As we monitored the progression of the COVID-19 virus, we quickly realized we would be hypocrites if we ignored the situation.

For the safety of not only our employees and vendors, but our customers and society as a whole, we are suspending operations for now. These are unprecedented times, but we don't have to endure them alone. We are all in this together. From Los Angeles to Beijing, it matters not what your gender is, your race, religion, or economic status... we all can make a difference.

Please, stay home when you can. Practice social distancing, wash your hands often, and BE KIND to your neighbor. And as always, thank you for being a part of The Brain Stimulator Family :)

Pair of 2×2″ Amrex Sponge Electrodes

SKU: Am-Elect2x2


These Professional 2×2″ Amrex Sponge electrodes are made from high-quality materials and are plastic sealed after assembly. The smaller 2×2″ Sponge Electrodes have a smaller surface area, allowing for more precise targeting. This is the smallest recommended electrode size for use with tDCS.

Note: Amrex Electrode Cables, are required to use these electrodes with The Brain Stimulator v3.0 and The Travel Model v2.0, or Amrex Adapters for our older products.


Amrex Sponge Electrodes (2×2″)

Amrex Sponge Electrodes are arguably the best sponge electrodes on the market, and are preferred by many tDCS enthusiasts. Amrex Electrodes are comprised of a cellulose sponge with a stainless steel metal mesh backing, all enclosed within a thick, rigid, rubber casing. Only the highest-quality materials are used, and these electrodes are the industry standard for sponge stimulation. To use these electrodes with The Brain Stimulator v3.0 and The Travel Model v2.0 Sponge Electrode Cables are required.


You may consider adding replacement sponge inserts to your order. Through real-world testing, we recommend replacing the sponge inserts every two weeks (or every 14 uses). We sell 10-packs of Amrex replacement sponges so you will have plenty of extras on hand when your original one’s need replacing. Over time, the sponges within Amrex electrodes can grow brittle and crumble, crack, or split causing an uneven distribution of current. Worn-out sponges can create an uncomfortable tDCS session, with increased tingling, itching, and sometimes stinging sensations occurring.

Additional information

Weight 1.5 oz

Sponge Electrode Size


Country/Region of Manufacture