My wording was maybe a bit bad, but this really sounds like AC current leakage. When you feel it, it is above the action potential, therefore activating your ne

My wording was maybe a bit bad, but this really sounds like AC current leakage. When you feel it, it is above the action potential, therefore activating your nerves and muscles. This could be due to improper grounding or faulty components. This is not normal and shouldn't be! It can cause all kinds of symptoms, but the general consensus is, that if it is below the dangerous threshold of around 30 mA, there will be only discomfort but no permanent or irreversible damage. Discomfort is lightly said, but can have a huge impact on your quality of life. Please do something about this and maybe complain to the vendor. Even though this is not seen as health risk. There are some studies suggesting in vitro damage for all kinds of cells at low levels of current, you as a complete system will be very resilliant to this.