1/4‐inch Microphone Preamplifier Type 2670

The preamplifier Type 2670 is very compact and operates over a wide range of temperature, humidity and other environmental conditions.

USE SCENARIOS

• Sound measurements with 1/4- and 1/8-inch Brüel & Kjær and other compatible microphones
• Sound intensity probes

FEATURES

• Full electromagnetic compatibility (EMC)
• LEMO connector for instrument input socket
• Wide dynamic range
• Very low inherent noise, high input impedance
• Low output impedance and high output current allow use with long extension cables
• Wide working temperature range
• Excellent phase linearity

The high distortion limit together with an extremely low inherent noise level gives a wide dynamic range. You can connect ¼" microphones directly and 1/8-inch types using an adaptor. The preamplifier, cable and its connectors all fulfil EMC requirements. You can verify the condition of the microphone, preamplifier and cable on-site using its patented charge injection calibration (CIC) technique.

The low output impedance and high output current capability mean that you can use long cables between the preamplifier and your measuring instrument without loss of signal quality.