The digital I2S Audio -Strengthen Breakout Board from Adafruit is ideal for use with the Raspberry PI. It consumes digital audio signals via the I2S interface, convert it into an analog output signal and reinforce it so that speakers can be connected directly. It combines an I2S D/A converter with an audio amplifier on a board. The small stereo amplifier module is surprising powerful and delivers up to 3.2 W for speakers with 4 Ω impedance. The Class D amplifier can be operated with a voltage of 2.7 V-5.5 V. Due to the high efficiency of the amplifier, the module is particularly suitable for mobile and battery -operated projects. The I2S audio entrance supports 3.3V and 5V level. The reinforcement can be set to the following values via the "Gain" input: 3DB, 6dB, 9dB, 12dB and 15dB By de.