The 2001 is a new generation digital audiometer from Arphi. This clinical/diagnostic audiometer features a unique menu-driven display and user-programmable test setups for optimal operating efficiency during daily routine examinations. New features incorporated into the Arphi 2001 include, amongst others, data interface, 1 dB attenuator resolution, ipsilateral masking, and simultaneous presentation of stimulus and masking binaurally.