Abstract: An apparatus for treatment of a living body includes a frequency generator for generating an electrical output signal in the audio or sub-audio range. A plurality of transducers for applying different treatment modalities to one or more selected locations of the body are driven by the generator. Each of the treatment applicators is capable of being driven at a plurality of operating frequencies. A modulator coupled to the frequency generator and to the applicators generates individual drive signals for each of the applicators and permits individual control over the timing and sequence of their operation. One of the applicators is an infrared radiation diode device.