but come at the expense of needing a high voltage power supply to supply the charge and an amplifier to buffer and magnify the audio. Electret microphone capsule schematic. wdwd [CC BY 3.0] The ...

Electret microphones are capable of high-quality output ... Instead, this design relies on a dual OPA1642 op-amp, with its low quiescent current meaning it’s perfect for running off phantom ...