Methods, systems, and devices for receiving a data signal and a power signal by a hearing prosthesis are disclosed. An input signal is received at a first unit of a hearing prosthesis. The first unit receives the input signal at a wired interface module that conforms to a standardized interface. The first unit identifies a data signal and a power signal included in the input signal. The first unit transfers at least a portion of the power signal to a second unit of the hearing prosthesis. The second unit is implanted in a body and is configured to stimulate an auditory organ, allowing a user to perceive at least a portion of a sound.