The GMI6027U-2C54DB with Electret Condenser Microphone Solder Pads RoHS is a RoHS compliant, dual-mode low noise amplifier with a bias voltage LED, a matched differential input, and a solder pad for the electret condenser microphone. It is a precision microphone preamplifier that amplifies low level to high level signals. It has a gain of up to 25dB, and its offset voltage is as low as 0.1 V. Its low noise, low distortion, and wide dynamic range make it an ideal choice for audio applications. It features a dual interface that allows it to be used in either I2S or I2C interfaces, and it is highly compatible with 8-bit MCU, DSP, and ICs. This INGHAi GMI6027U-2C54DB microphone preamp is designed to capture audio signals in a variety of high-precision applications.