A system for fitting a cochlear implant to a recipient patient, the cochlear implant including an implanted electrode array with a plurality of stimulation contacts for delivering electrical stimulation signals to adjacent cochlear neural tissue, the system comprising: means for delivering to an ear of the patient an acoustic stimulus over a range of acoustic frequencies; means for measuring a frequency-dependent baseline acoustic transfer function to the acoustic stimulus using a response sensor configured to sense pressure response characteristics in the middle or inner ear; means for determining a maximum comfortable level (MCL) of stimulation for at least one stimulation contact in the electrode array, based on performing an electrically evoked measurement comprising: i. delivering an electric stimulation signal at a given stimulus intensity to the at least one stimulation contact, the acoustic stimulus being present before, during and after delivery of the electric stimulus, ii. using the response sensor to measure a frequency-dependent modified acoustic transfer function to the electric stimulation signal, iii. comparing the modified acoustic transfer function to the baseline acoustic transfer function to determine when a stapedius reflex response occurs, iv. when the stapedius reflex response does not occur, increasing the stimulus intensity and repeating the electrically evoked measurement, and v. when the stapedius reflex response occurs, identifying the MCL for the at least one stimulation contact based on the corresponding stimulus intensity. means for delivering to an ear of the patient an acoustic stimulus over a range of acoustic frequencies; means for measuring a frequency-dependent baseline acoustic transfer function to the acoustic stimulus using a response sensor configured to sense pressure response characteristics in the middle or inner ear; means for determining a maximum comfortable level (MCL) of stimulation for at least one stimulation contact in the electrode array, based on performing an electrically evoked measurement comprising: i. delivering an electric stimulation signal at a given stimulus intensity to the at least one stimulation contact, the acoustic stimulus being present before, during and after delivery of the electric stimulus, ii. using the response sensor to measure a frequency-dependent modified acoustic transfer function to the electric stimulation signal, iii. comparing the modified acoustic transfer function to the baseline acoustic transfer function to determine when a stapedius reflex response occurs, iv. when the stapedius reflex response does not occur, increasing the stimulus intensity and repeating the electrically evoked measurement, and v. when the stapedius reflex response occurs, identifying the MCL for the at least one stimulation contact based on the corresponding stimulus intensity. i. delivering an electric stimulation signal at a given stimulus intensity to the at least one stimulation contact, the acoustic stimulus being present before, during and after delivery of the electric stimulus, ii. using the response sensor to measure a frequency-dependent modified acoustic transfer function to the electric stimulation signal, iii. comparing the modified acoustic transfer function to the baseline acoustic transfer function to determine when a stapedius reflex response occurs, iv. when the stapedius reflex response does not occur, increasing the stimulus intensity and repeating the electrically evoked measurement, and v. when the stapedius reflex response occurs, identifying the MCL for the at least one stimulation contact based on the corresponding stimulus intensity. <EOS>