Hi-Z Microphone Preamplifier. Schematic Diagram.
This preamplifier for a high impedance microphone was built into a Harris limiter/compressor which needed a line-level input. Its response is essentially flat from 20Hz-30KHz. The 10uF capacitors are 25v Tantalums, the .01uF capacitors are film caps, and the 680uF is a 50V aluminum electrolytic. All resistors are 1/4W carbon film. Other TL0xx amplifiers will work in this application.