• on Audio/Video/Photography
  • Published in issue 12/2003 on page 0
About the article

Balanced Microphone Amplifier

A number of years ago (November 1997), we published a design for a stereo microphone preamplifier with balanced inputs and a phantom power supply. The heart of this circuit was a special Analog Devices IC, the SSM2017. Unfortunately, this IC has been discontinued. In its place, the company recommends using the pin-compatible AMP02 from its current product line. However, and again unfortunately, the specifications of this opamp make it considerably less suitable for use as a microphone amplifier.
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