Fully assembled and tested electret microphone amplifier breakout with a 2020 kHz electret microphone soldered on. Key features Gain adjustable via a back trim pot from 25x to 125x for flexible amplification. Compact breakout designed for easy integration into a variety of projects. Uses the MAX4466 opamp, chosen for delicate microphone amplification and improved sound quality. Builtin supply noise rejection provides cleaner output with less hiss or scratchiness than many mic amp breakouts. Why you need this Provides reliable, adjustable microphone amplification on a readytouse board. Improves audio quality for small devices and DIY projects that require microphone input. Simple setup with a single board for readytouse audio input. 23 practical use scenarios Voice changer or talking toy: large gain range allows clear amplification of spoken voice for effect or communication in compact devices. Audio recording or sampling: suitable for field recordings, experiments, or small projects where a clean mic signal is desired without extra noise. Audio reactive installations: use microphone input to drive soundreactive panels, LEDs, or displays for interactive art or demonstrations. Compatibility and performance notes Electret microphone frequency response covers 20 Hz to 20 kHz for fullrange voice and audio signals. Backside available gain adjustment enables onthefly tuning to match different microphones or environments. The MAX4466based amplifier focuses on clean amplification with reduced supply noise, contributing to smoother audio performance compared with typical mic amp breakouts.