MAX9812 chip based electret MIC preamplifier module with the Analog output. This module gives a 20dB fixed gain to your Audio input signals. This board includes a high-quality CZN-15E omni directional microphone. Works at 2.7V to 3.3V. 

Using this module is super easy. Provide a 3.3V power supply and connect Audio output of this module to the Power amplifier or Audio Input of any PA systems power amplifier and you have a good fidelity MIC. Speak on the microphone and get it amplified using any audio amplifier, home speakers etc. Your home speaker and this MIC preamp module makes a small PA System, let them hear your voice loudly! 

This module also has a 4mm Mounting hole to fix the module in your project enclosures or PCBs.

 MAX9812 provide all the necessary noise rejection and bias voltage for Microphone. It gives a prefect linear audio output preamplified to be fed in to any audio power amplifier or speech/audio processor.

Specifications: 

• Board Operating voltage: DC 3.3V-6V
• Interface pad spacing 2.54MM
• size:15mm * 10mm