Preamplifiers

  1. 26AG 1/2'' Insert Voltage Preamp, Connector
    Freq range: 2.5 Hz - 200 kHz
    Noise: 1.8 µV
    Gain: -0.25 dB
    Special feature: Insert voltage for determining open-circuit sensitivity of a microphone

    G.R.A.S. 26AG 1/2'' Insert Voltage Preamplifier with Integrated Connector

    The G.R.A.S. 26AG,26AH, 26AJ, 26AK, 26AM and 26TK 1/2-inch preamplifiers are small robust units optimised for acoustic measurements using condenser microphones. They have a very low inherent noise level, a wide dynamic range and a frequency response from below 2 Hz to above 200 kHz.

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  2. 26AN 1/4'' Insert Voltage Preamp
    Freq range: 2.5 Hz - 200 kHz
    Noise: 1.8 µV
    Gain: -0.29 dB
    Special feature: For open-circuit sensitivity calibration of 1/2" and 1/4" microphone cartridges

    G.R.A.S. 26AN 1/4'' Insert Voltage Preamplifier

    The G.R.A.S. 26AN 1/4" Preamplifier is a small robust unit optimised for acoustic measurements using condenser microphones. It has a very low inherent noise level, a wide dynamic range and a frequency response from below 2 Hz to above 200 kHz.G.R.A.S. 26AN is configured to permit use of the insert voltage-technique for determining the open-circuit sensitivity of a microphone.

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