A magnetofluidic hearing aid system includes a hearing aid having a signal processing device connected to a magnetic transmitter. The system includes such a hearing aid and a magnetofluid suitable for use in the body. The magnetic transmitter transmits a magnetic field producing vibrations in a liquid mixture containing the magnetofluid. The liquid mixture is operatively introduced into a cochlea, and the vibrations are suitable for triggering an auditory perception in the cochlea. Acoustic feedback is precluded as a result of the transmitter producing neither acoustic signals nor mechanical vibrations. A functional impairment caused by physical influences such as soiling, for example, of an acoustic receiver, is also precluded. Problems arising from impaired contact with the body are prevented from the beginning by the non-contact signal transmission. A hearing aid supply is also advantageously enabled regardless of the functional capability of the middle ear apparatus.