The main difference between Biotrohn and Plasmatrohn lies in their mode of operation. Biotrohn operates with microfrequencies (electricity in hertz), requiring the user to attach electrodes or apply patches to the body to receive the frequencies. On the other hand, Plasmatrohn uses cold plasma inside his bulb, which penetrates to the cells without the need to hold any element; it is enough to sit or lie comfortably next to him. This allows for both individual and group treatments.