Build compact, high-quality digital audio into your next project with this MAX98357A I2S audio amplifier module. Combining an I2S DAC and a Class D amplifier on a single board, it takes standard digital audio input and delivers clean, amplified sound straight to a speaker — no separate DAC stage required.
Running from a wide 2.7V to 5.5V supply, this tiny mono amplifier punches well above its size, driving up to 3.2W into a 4 ohm speaker. Its Class D efficiency makes it ideal for portable and battery-powered builds, while built-in thermal and overcurrent protection keeps your project safe.
Whether you are prototyping with a microcontroller or finishing a compact speaker project, this board is a ready-to-use building block that saves space and wiring.
Ideal for DIY audio projects, microcontroller sound output, portable speakers, and embedded systems that use digital I2S audio. The five-pin gain selection lets you tune output level to match your speaker and source. Connect your I2S data, bit clock, and channel-select lines, power the board, and wire the bridged output directly to a speaker.