The ear phone outlet allows the use of all available earphones. The resonance tones are readily and more precisely perceived. The tested person can follow the procedure through the speakers. A push button which switcheS the LEFT plate on (instead of foot pedal). (slightly elevated) The RIGHT plate picks up the organ samples or their homeopathic potentates. The LEFT plate, which is turned on with the finger push button, is for the parasite slides and their derivates. The Hi-Tech carbon handles ensure excellent contact and can be used with slightly dampend hands and without the use of wet paper. The handles are washable and alcohol resistant.