Interfacing MAX9814 Microphone AGC Amplifier Module with Arduino
Electret Microphone Amplifier - MAX9814 with Auto Gain Control — PMD Way
MAX9814 Electret Microphone Amplifier Module Auto Gain Control AGC for Arduino | eBay
CJMCU AGC MAX9814 Microphone Amplifier Module
Amazon.com: MAX9814 Electret Microphone Amplifier Board Module MIC Auto Gain Max 40dB/50dB/60dB Frequency 2.7V-5.5V with Pins for Arduino : Electronics
DC 3V 12V MAX9814 Electret Microphone Amplifier Board with AGC Functio – Aideepen