... 10,000 Hz)≤±1dB Used withMicrophoneModel AWA14422 1/2”pressurefieldMicrophoneModel AWA14422 1/2” pressure field Microphone, also 1” pressure ... field Microphone Model AWA14422 1/2”pressurefield MicrophoneModel AWA144121” pressure fieldMicrophoneUsed withPreamplifierModel AWA14601B or ... Simulator Test JigCoupler Test Jig,Adaptor for 1/2” inch to 1” Ear Simulator Test Jig Ear Simulator ...