1. 40EN 1" Pressure Mic
    Freq range: 2.6 Hz to 8 kHz
    Dyn range: 9.6 dBA to 146 dB
    Sensitivity: 50 mV/Pa

    G.R.A.S. 40EN 1" Ext. Polarized Pressure Microphone

    The 40EN is an IEC 61094 WS1P 1" externally polarized pressure microphone. It is a 1" pressure microphone that is ideal for measurements in couplers used for testing earphones. When flush-mounted, it can measure sound pressures at boundaries. It is highly suited as a laboratory-standard microphone.

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  2. 90AA Audiometer Calibration System
    Freq range:
    ANSI: S.1.40, S.1.43, S.1.11, S.3.6
    IEC: 60318-1 & -2

    G.R.A.S. 90AA Audiometer Calibration System

    The G.R.A.S. 90AA Audiometer Calibration System is easy and fast to set up and control and can be upgraded as your calibration needs change. From quick measuring of frequencies and test signal levels to harmonic distortion and representation of the values in one table together with the third octave band spectrum.

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  3. 90AB Basic Audiometer Calibration Sys
    Freq range:
    ANSI: S.1.40, S.1.43, S.1.11, S.3.6
    IEC: 60318-1 & -2

    G.R.A.S. 90AB Basic Audiometer Calibration System

    The G.R.A.S. Audiometer Calibration Systems are configured to meet the requirements of modern audiometer calibration. They are easy and fast to set up and control, and can be upgraded as your calibration needs change.

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  4. 40AG 1/2" Pressure Mic
    Freq range: 3.15 Hz to 20 kHz
    Dyn range: 20 dBA to 164 dB
    Sensitivity: 12.5 mV/Pa

    G.R.A.S. 40AG 1/2" Ext. Polarized Pressure Microphone

    The 40AG is an IEC 61094 WS2P ½" externally polarized pressure microphone with rear-venting. It is a high-precision condenser microphone made according to IEC 61094-4 requirements and is ideal for coupler measurements in both laboratory and production environments. It is extremely robust and reliable and can measure sound pressure levels up to 160 dB within 3.15 Hz to 20 kHz. Learn More
  5. 43AA Ear Sim Kit IEC 60318-1 & -2
    Connection: 200 V/LEMO
    Volume: Complex
    Dyn range: 25 dB(A) to 164 dB
    ANSI: S3.7
    IEC rec.: 60318-1 & -2

    G.R.A.S. 43AA Ear Simulator Kit According to IEC 60318-1 & -2

    The G.R.A.S. 43AA Ear Simulator Kit is a complete test jig for acoustical measurements on telephone handsets and earphones. It includes an IEC 60318 Ear Simulator RA0039 which is individually calibrated according to the ITU-T Recommendation P.57 (08/96) ”Series P: Telephone transmission quality, objective measuring apparatus: artificial ears.

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  6. 43AF 1'' 6cc Coupler Kit IEC 60318-3
    Connection: 200 V/LEMO
    Volume: 6 cc
    Dyn range: 14 dB(A) to 146 dB
    ANSI: S3.7
    IEC: 60318-3

    G.R.A.S. 43AF 1'' 6cc Coupler Kit According to IEC 60318-3

    The G.R.A.S. 43AF Coupler Kit is a complete test jig for acoustically testing telephone handsets and earphones and complies with ANSI S 3.7 – 1995 – American National Standard for Testing Earphones.:

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  7. RA0039 Ear Sim IEC 60318-1
    Volume: Complex
    ANSI: S3.7
    IEC: 60318-1

    G.R.A.S. RA0039 Ear Simulator according to IEC 60318-1

    The G.R.A.S. IEC 318 RA0039 Ear Simulator is an ear simulator with an input impedance closely resembling that of an average human ear. When the RA0039 is coupled to a sound source, the impedance will load the sound source similar to the loading caused by the human ear.

    The RA0039 meets the requirements of IEC 60318-1:1998 Electroacoustics - "Simulators of human head and ear - Part 1: Ear simulator for the calibration of supra-aural earphones".

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  8. 42AB Sound Calibrator
    Sound pressure level: 114 dB
    Frequency: 1 kHz
    ANSI: S1.40
    IEC: 60942

    G.R.A.S. 42AB Sound Calibrator, Class 1

    The G.R.A.S. 42AB  Sound Calibrator is a small battery-operated precision microphone calibrator. The calibrator can be used directly on 1" microphones. Adapters for calibrating  1/2" (factory mounted), 1/4" and 1/8" microphones are included.

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