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
GY MAX4466 Electret Microphone Amplifier Module Adjustable Gain OUT GND VCC DC 2.4 5V For Arduino|Integrated Circuits| - AliExpress
High Quality Bm800 Sound Recording Podcast Studio Microphone For Pc Computer Electret Condenser Tube Microphone Professional Set - Buy Sound Recording,Computer Microphone,Podcast Studio Microphone Product on Alibaba.com