Preamplifier with Integrated Connector GRAS 26AI 1/2”

Introduction

• GRAS26AI is a preamplifier designed for low-frequency applications in the laboratory and field and accommodates directly for all IEC 61094 standardized 1/2″ externally polarized measurement microphones.
• It is rugged and reliable and can handle microphone signals up to 50 Vpeak within 1 Hz to 200 kHz. The printed circuit board is made by use of thick-film substrate technology and optimized with respect to maximum suppression of microphonics and moisture rejection.
• The high-quality, standard 7-pin LEMO male connector is integrated into the preamplifier and ensures that only one type of connector and cable is required for both connection and extension.
• 26AI is factory calibrated individually and delivered with a calibration chart stating its A-weighted and linear self-noise.

Compatibility

• These preamplifiers are compatible with 1/2-inch microphones as defined in international standard IEC1094 Measurement Microphones, Part 4: Specifications for working standard microphones. The mounting thread (11.7 mm – 60 UNS-2) is compatible with other available makes of similar microphone preamplifiers.
• GRAS 26AI is provided with an integrated 7-pin LEMO series 1B plug.