· feedback risk management for reduction of acoustic feedback · variable crossover frequency to increase fitting flexibility · special digital fitting philosophy based on keyed-in audiometric values · digital volume control ± 6 db range with beep-tone adjustment indicator · m mt and t program switch the telecoil frequency response is equalized making it identical to that of the microphone · long battery life of approximately 500 hours · low battery beep-tone indicator · minimal audible internal noise due to special processing · direct audio input · tamper-resistant battery drawer · available in ...