Preamplifiers with traditional power supply (LEMO)

Traditional preamplifiers require an external power supply which delivers a supply voltage of either ±15 to ±60 V DC or +28 to +120 V DC. This type of preamplifier is normally connected to a suitable power supply (for example the GRAS Type 12AK) via a 7-pin LEMO plug or to an analyzer with a suitable LEMO connector.

GRAS supplies measurement microphone cartridges and preamplifiers for microphone cartridges separetely and was first mover in the acoustics industri to bundle the two items! Pick and choose from the wide range of GRAS measurement microhpone sets.

GRAS 26HG 1/4" Preamplifier with 3 m Integrated Cable, Low Frequency

Freq range: 1 Hz to 200 kHz
Noise: 1.8 µV Gain: -0.29 dB
Special feature: For low frequency and low-noise applications

GRAS 26HG 1/4" Preamplifier with 3 m Integrated Cable, Low Frequency

The GRAS ¼″ Preamplifier Type 26HG 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 wide frequency response from below 1 Hz toabove 200 kHz...