The GY-MAX4466 is a compact, high-sensitivity electret microphone amplifier board designed for audio detection and recording projects. Featuring the MAX4466 low-noise op-amp with adjustable gain, it delivers clean, reliable sound signals ideal for Arduino, Raspberry Pi, and other microcontroller applications. Perfect for voice detection, sound-activated projects, and audio monitoring in tight spaces.

The breakout board has an adjustable gain that ranges from ~25x to ~125x, set by an onboard potentiometer. This lets you tune it for anything from normal voice levels to very quiet sound detection without excessive noise or clipping.