The AA222 has testing capabilities for air and bone conduction as well as speech. Dual inputs for a tape or CD player allows the examiner to conduct binaural recorded speech tests and other tests for central auditory processing or hearing aid evaluations. Other tests include pure tone and Stenger speech, ABLB, Auto Threshold (Hughson-Westlake method) and SISI. Outputs are available to connect external speakers and with an appropriate amplifier AA222 will produce 90dB or more of speech in a typical sound room environment. Separate software calibration for all transducers allows the exchange of insert phones or traditional TDH39 phones by the push of a button.