Electret Microphone Amplifier – MAX4466 with Adjustable Gain



  • Adafruit
Availability: Temporarily Out Of Stock

Out of Stock - Available on Backorder

SKU: BOB-020 Manufacturer: Adafruit Industries Mfg Part Number: 1063 Categories: , , Tags: , , ,


This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For the amplification this board uses the Maxim MAX4466, an op-amp specifically designed for this delicate task! The amplifier has excellent power supply noise rejection, so this amplifier sounds really good.

This breakout is best used for projects such as voice changers, audio recording/sampling, and audio-reactive projects that use FFT. On the back, we include a small trimmer pot to adjust the gain. You can set the gain from 25x to 125x. That’s down to be about 200mVpp (for normal speaking volume about 6″ away) which is good for attaching to something that expects ‘line level’ input without clipping, or up to about 1Vpp, ideal for reading from a microcontroller ADC. The output is rail-to-rail so if the sounds gets loud, the output can go up to 5Vpp!



  • 20-20KHz electret microphone
  • Trimmer pot to adjust the gain
  • Maxim MAX4466 amplifier
  • 25x to 125x gain




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  Difficulty Level

Soldering Skill: Beginner
Prototyping Skill: Beginner
Programming Skill: N/A

  Product Certifications

  Product Attributes

Weight: 4 g

  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is returnable Within 14 Days of delivery for a store credit. Item must be unopened, unused, and in re-saleable condition.

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