A potentially novel pre-amp for electret mic capsules which have their internal FET's Drain and Source connections available separately
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basic - How to amplify electret microphone to range from 0-5V with bias of 2.5V? - Electrical Engineering Stack Exchange
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amplifier - Electret microphone: selecting a bias resistor - Electrical Engineering Stack Exchange
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![Audio Amplifier with Electret Microphone [Analog Devices Wiki]](https://wiki.analog.com/_media/university/courses/engineering_discovery/lab_4/audio_amplifier_theory_1.png?w=250&tok=e59f72 "Audio Amplifier with Electret Microphone [Analog Devices Wiki]")
Audio Amplifier with Electret Microphone [Analog Devices Wiki]
Electret condenser microphone amplifier for use in microcontroller projects - Do It Easy With ScienceProg
Mic bias voltage divider: advice sought : r/amateurradio
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