SparkFun I2S Audio Breakout: https://www.sparkfun.com/products/14809
Hookup Guide: https://learn.sparkfun.com/tutorials/i2s-audio-breakout-hookup-guide
The SparkFun I2S Audio Breakout board is based on the MAX98357A digital to analog converter (DAC), which converts I2S PCM audio to an analog signal. The audio signal is amplified using a class D amplifier, which can deliver up to 3.2W of power into a 4Ω load. The board supports one channel but can be configured to output the left channel, right channel, or a combination of both channels (mono).