What it is
MAX98357 Pre-Soldered I2S Class D Audio Amplifier Module is a compact breakout that takes digital I2S audio from a host and delivers direct Class D speaker output. It combines audio decoding and amplification on one board for embedded audio builds, with a pre-soldered header and screw terminal for simpler wiring; it uses I2S rather than I2C, SPI, or UART, and is best suited to an ESP32 or Raspberry Pi with I2S audio support.
Pins
Refer to the silkscreen labels on the board/module and the listing photos for the exact pinout. This module needs the standard I2S audio signals from your host plus power and speaker connections, and the included screw terminal is used for speaker output.
Technical Specifications
| Specification | Details |
|---|---|
| Product type | I2S audio amplifier breakout module |
| Chip / model | MAX98357 |
| Input interface | I2S digital audio |
| Output type | Class D speaker output |
| Speaker connection | Screw terminal included |
| Header | Pre-soldered |
| Host requirement | Must provide required I2S audio data and clocks |
| Operating voltage | Varies by module revision |
| Pinout reference | See listing photos and board silkscreen |
Frequently Asked Questions
What is the MAX98357 I2S amplifier module used for?
It takes digital I2S audio from a host device and converts it into amplified Class D speaker output. It is useful for compact embedded audio projects where you want direct speaker wiring from a small breakout board.
How do I connect the MAX98357 to an ESP32 or Raspberry Pi?
Use a host that can output I2S audio, connect the required audio data and clock lines, and wire your speaker to the included screw terminal. Check the board silkscreen and listing photos for the exact pinout on your module.
Does the MAX98357 module work with Arduino?
It needs a controller or computer that can provide I2S audio. Many ESP32 boards and Raspberry Pi setups are a better fit, while a standard Arduino only works if that specific board and software support I2S audio.
Can I connect a speaker directly to this board?
Yes. This module is made for direct speaker output and includes a speaker screw terminal to make the connection straightforward.
Where can I find the MAX98357 pinout or datasheet?
Use the silkscreen labels and listing photos for the exact board pinout, since modules can vary by revision. For chip-level behavior and software context, search the MAX98357 datasheet and match it to your board layout.
