The MAX98357A I2S Digital Audio Amplifier Module is a compact and efficient Class-D amplifier designed to output crystal-clear audio directly from microcontrollers using the I2S digital interface. Unlike analog amplifiers, this module receives pure digital audio and converts it to a clean, powerful output with minimal distortion.
Supporting up to 3W output at 4Ω, the MAX98357A is ideal for building compact speaker systems and IoT audio devices. It works seamlessly with ESP32, ESP8266 (I2S mod), Raspberry Pi, Arduino (I2S), and STM32, making it a versatile choice for developers.
It also includes convenient features like auto clock detection, left/right channel selection, and built-in DAC, meaning no external sound card or DAC module is needed.
⭐ Key Features
Digital I2S audio input (no analog noise)
Built-in DAC + Class-D amplifier
Up to 3W output at 4Ω speaker
High efficiency, low heat
Auto sample rate & clock detection
Left/Right/Mono channel select
Compatible with ESP32, Raspberry Pi, STM32, Arduino I2S
Very small, lightweight, and easy to integrate
📦 Package Includes
1 × MAX98357A I2S Digital Audio Amplifier Module
🔧 Applications
DIY Bluetooth/Wi-Fi speakers
Voice assistant projects
MP3 and audio playback devices
Smart home audio solutions
Portable sound systems
IoT and embedded audio applications
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