A hearing system comprises a shell having an open inner chamber. An input
transducer and a transmitter assembly are disposed in the open inner
chamber. The transmitter has a frequency response bandwidth in a 6 kHz to
20 kHz range, and the open chamber has an end adjacent a patient's
tympanic membrane with one or more openings that allow the ambient sound
to pass through the chamber and directly reach the middle ear of the
user.