1EXCELLENT SOUND CATCH: Microphone preamplifier utilize audio amplification technology to ensure high fidelity and clarity of sound catch 2FUNCTIONS AND EFFECTS: The preamplifier design can improve the sensitivity and signal to noise ratio of the microphone, suitable for various application scenarios 3POWERFUL AUDIO AMPLIFICATION: The MAX4466 technology enable audio amplification capabilities to provide powerful sound output, useful and practical 4EASY INSTALLATION: The electret microphone amplifier is easy to connect and use on your device, with no extra complicated steps required 5WIDE APPLICATION: The electret microphone amplifier module is suitable for sound recording, speech recognition, noise detection and other fields 1 x Audio Amplifier