The MAX98357 Module is a powerful and efficient mono Class D amplifier with digital audio input via I2S, making it ideal for modern embedded audio applications. With its compact size and high-efficiency performance, it allows you to easily add high-quality sound output to microcontrollers like the ESP32, Raspberry Pi, or Arduino.Key FeaturesDigital Audio Interface (I2S): Direct connection to I2S-capable microcontrollers—no DAC required.Class D Amplification: High-efficiency output with minimal heat generation.Mono Output: Delivers up to 2Wof audio power into a 4Ω speaker (at 5V).Low THD N: Delivers clean audio with minimal distortion.Automatic Clock Detection: Supports various I2S sample rates without configuration.Tiny, Breadboard-Friendly Design: Easy to integrate into compact or portable projects.Technical SpecificationsAmplifier Type: Mono Class DInput: I2S digital audioOutput Power: Up to 3.2W @ 5V into 4Ω speakerOperating Voltage: 2.5V – 5.5V DCTHD N: < 0.1�ficiency: Up to 92%I2S Sample Rates Supported: 8kHz to 96kHzOutput Load: 3Ω – 8Ω speakersDimensions: 18mm x 19mmApplicationsVoice assistants and smart speakersIoT audio feedback systemsMP3/music playback in DIY projectsTalking devices and robotsEducational and STEM kitsPortable sound systems or alarms
