I2S 3W Class D Amplifier Breakout - MAX98357A

The MAX98357 I2S Amp Breakout takes standard I2S digital audio input and, not only decodes it into analog, but also amplifies it directly into a speaker. This small mono amplifier is surprisingly powerful - able to deliver 3.2 Watts of power into a 4 ohm impedance speaker (5V power @ 10% THD). Inside the miniature chip is a class D controller, able to run from 2.7V-5.5VDC. Since the amp is a class D, it's incredibly efficient - making it perfect for portable and battery-powered projects. It has built in thermal and over-current protection.

Works great with Raspberry Pi, Arduino Zero, and any other microcontroller or microcomputer with I2S audio outputs.

More information is available on the website of Adafruit and Arduino.