Differential Microphone Pre-Amplifier

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https://www.electronics-lab.com/project/differential-microphone-pre-amplifier/

  The project shown here is a microphone preamplifier that provides high quality amplification, optimized for use in computers, media and mobile applications. The pre-amplifier provides a differential input stage, making the device particularly effective when layout constraints force the microphone amplifier to be physically remote from the ECM microphone. This project features adjustable gain […]

Tiny Professional Microphone Preamplifier

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https://www.electronics-lab.com/project/tiny-proffesional-microphone-preamplifier/

This board has been designed around INA217 low distortion, low noise instrumentation amplifier. The INA217 is ideal for low-level audio signals such as balanced low-impedance microphones. Many industrial, instrumentation, and medical applications also benefit from its low noise and wide bandwidth. Unique distortion cancellation circuitry reduces distortion to extremely low levels, even in high gain. […]