I ve known people who are sensitive to the regular zapper current and thats one of the reasons why one of my zappers is parazappers adjustable output model, tho I dont know what the exact output is. Ill have to check it with my scope to see. I guess Parazapper would know. But if your sensitive enought to be troubled by .3 micro amps then it seems there is something else going on. And mabey a message for u and all of us.
As JAB has u on the track of using your atelier and controlling the output,then the need of any other device would seem uneeded. You can just wire in the reostat to controll the output, but again if your other device bugged u at .0003 amps then -------
U know, in the last 5 or 8 years researchers found that tho it had been surmised and thought for years that it was a really low elec current that was traveling thru our nervous system, evan tho if that was so, the negative side effects of such type energy had not been seen ( heat ect) and that had caused considerable disscusion. However now it has been shown that it is actually sound that is the agent that we have termed nerve impulses.
So perhaps your system is highy conductive and thus the evan low voltage electricity is more reactive, whereas more commonly it is bled off or contained, to a degree . Or perhaps like the people who can feel color with their fingertips you are just sensitive.
Tho I think the unatural use of electrons may have as much to do with it as anything.( lets all keep in mind that the sq wave promoted by HC was for electricuting organisms as opposed to Rifes MOR which was the organisms natural sine wave frequency jacked up) I wonder what hz that muscle/tens unit u mentioned is putting out. Ive seen some like it that put out 7 hz and claim that anything higher shuts down the nerves. Dr Manners said that low output was better than high unless we were trying to affect bone.