The MAX9814 Electret Microphone Amplifier Module with AGC 2.7V–5V is designed to capture and amplify audio signals with high clarity and low noise. It includes automatic gain control that adjusts amplification based on sound levels, ensuring stable output. This module is easy to connect with Arduino, Raspberry Pi, and other microcontrollers for audio detection and sound projects. The MAX9814 Electret Microphone Amplifier Module with AGC 2.7V–5V by StemVolt is suitable for educational use, diy audio experiments, voice detection, and sound monitoring applications.
Related Products:
• Sound sensor module for Arduino
• LM386 audio amplifier module
Specifications:
| Parameter | Details |
|---|---|
| Operating voltage | 2.7V to 5V DC |
| Amplifier IC | MAX9814 with AGC |
| Microphone type | Electret condenser microphone |
| Gain control | 40dB (GAIN to VDD), 50dB (GAIN to GND), 60dB (GAIN floating) |
| Current consumption | 3mA (typical) |
| Frequency response | 20Hz to 20kHz |
| THD (Total Harmonic Distortion) | 0.04% (Typ) |
Features:
• Built-in automatic gain control for stable audio output
• High sensitivity electret microphone
• Low noise and clear signal amplification
• Easy interface with microcontrollers
Package Includes:
1 × MAX9814 Electret Microphone Amplifier Module with AGC 2.7V–5V


















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