A middle ear prosthesis device and corresponding implantation procedure are described. A sensing microphone converts an acoustic audio signal into a corresponding electrical audio signal. A sensing amplifier amplifies the electrical audio signal. An audio transducer converts the amplified electrical audio signal into a corresponding amplified acoustic audio signal. An acoustic waveguide conducts the amplified acoustic audio signal from the audio transducer to the middle ear and includes: i. a main tubular portion having an outer end for placement in the outer ear canal and an inner end for placement in the middle ear, and ii. an extension portion having an outer end coupleable to the audio transducer and an inner end coupleable to the outer end of the main tubular portion.
