High quality audio preamp for a MEMS microphone. Design work with OpAmps like TI’s TL072 or OPA2145.  This stereo preamp, boards runs on a single A27 battery, has stereo 1/8″ output, has gain potentiometers for each channel.

Schematic and board designs in Eagle can be found this GitHub repo (look for the latest version of the board).  The design is shared and ready to order from OshPark.

MEMS microphone preamp

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