Amplifier Professional: This module uses a professional microphone amplification IC to deliver low output noise, enabling a clean mic signal with stable amplification. Powerful and efficiency: It provides sensitivity with a fixed gain of 20 dB for consistent performance. Two power supply voltages: Supports both 3.3 V and 5 V power supplies for flexible integration in different systems. Separate pins: Features separate pins for analog and digital output, with the default output being analog signal. Use scenarios: Embedded audio projects requiring a preamplified microphone input for microcontrollers or ADCs. Small audio interfaces or recording setups that need a stable 20 dB gain with low noise. Voice or sensorbased devices powered by 3.3 V or 5 V that require both analog and digital output options.