open-source

MAX9814 microphone with automatic gain

An electret microphone preamp that adjusts gain as sound levels change.

Remix this board → View source on GitHub ↗

License: CC BY-SA 3.0
Source revision: Original MAX9814 breakout
Last mirror: Sep 10, 2026
Git commit: 96bd97b32a53

MAX9814 microphone with automatic gain board

About MAX9814 microphone with automatic gain

An electret microphone preamp that adjusts gain as sound levels change. Original two-layer design for adaptation to ViaGrid; rerouting and testing are required.

Published design files

Audio & music · two copper layers
Open source (CC BY-SA 3.0) · Original design by Limor Fried / Adafruit Industries; retain attribution and share-alike terms.
Mirrored at 96bd97b32a53

Canonical source stays in the upstream git repository (and in WalGit after a successful mirror push). Generated renders and 3D models use artifacts/viagrid/max9814-agc-microphone/96bd97b32a5378517301185de4905cf5070b363f/9b81307294d2b1df on the artifact CDN and are not checked into git.