The MAX98357A I2S DAC Class D Mono Amplifier Module is a compact, high-efficiency digital audio amplifier featuring the MAX98357A integrated DAC and Class D amplifier. Designed for embedded audio applications, this module accepts I2S digital audio input directly from microcontrollers such as ESP32, ESP8266, Raspberry Pi, STM32, Arduino-compatible boards (with I2S support), and other development platforms.

Capable of delivering up to 3W of clean mono audio output to 4Ω–8Ω speakers, the MAX98357A module eliminates the need for an external DAC, simplifying audio system design while maintaining excellent sound quality and low power consumption. Its compact size, onboard screw terminals, and plug-and-play operation make it an excellent choice for portable speakers, smart home devices, IoT projects, robotics, voice assistants, alarms, and embedded audio systems.

Available from BDTronics, this digital audio amplifier module is ideal for makers, students, engineers, and product developers in Bangladesh.

Features:

• Original MAX98357A digital audio amplifier IC

• Integrated DAC and Class D amplifier

• Direct I2S digital audio input

• Up to 3W mono speaker output

• Supports 4Ω to 8Ω speakers

• High-efficiency Class D amplification

• Compact PCB design

• Fixed 9dB gain

• No external DAC required

• Excellent audio quality

• Low power consumption

• Minimal heat generation

• Screw terminals for secure speaker connection

• Easy integration with embedded systems

• Suitable for battery-powered devices

• Simple wiring and programming

Specifications:

• Product Type: Digital Audio Amplifier Module

• Amplifier IC: MAX98357A

• Amplifier Type: Class D

• DAC: Integrated

• Audio Input: I2S Digital Audio

• Audio Output: Mono

• Speaker Output: Screw Terminal

• Output Power: Up to 3W

• Supported Speaker Impedance: 4Ω–8Ω

• Gain: 9dB

• PCB Size: Less than 20 × 20mm

• Mounting: PCB Module

• Power Efficiency: High

• Heat Generation: Low

• Application: Embedded Audio, IoT, Robotics, DIY Electronics

Applications:

• ESP32 audio projects

• Raspberry Pi audio output

• Smart speakers

• Voice assistant devices

• IoT audio systems

• Portable Bluetooth speakers

• DIY speaker projects

• Robotics voice output

• Home automation systems

• Audio notification systems

• Embedded audio devices

• Digital music players

• Alarm systems

• Educational electronics

• AI voice projects

• Interactive displays

• Electronic toys

• Sound effects modules

Benefits:

• Combines DAC and amplifier in one IC

• High audio efficiency with Class D technology

• Low electromagnetic interference

• Compact for space-limited projects

• Excellent sound quality

• Low standby power consumption

• Easy connection to modern microcontrollers

• Ideal for portable electronic devices

• Reliable and stable operation

• Reduces external component count

Compatible Development Boards:

• ESP32

• ESP32-S3

• ESP8266

• Raspberry Pi

• STM32

• Arduino boards with I2S support

• Teensy

• RP2040 development boards

• Other I2S-compatible microcontrollers

How to Use:

• Connect the module to a suitable power supply.

• Connect the I2S interface to your microcontroller.

• Connect a 4Ω–8Ω speaker to the screw terminal output.

• Configure the microcontroller to transmit digital audio through the I2S interface.

• Upload your audio application firmware.

• Play digital audio directly without an external DAC.

Package Includes:

• 1 × MAX98357A I2S DAC Class D Mono Amplifier Module

Why Buy from BDTronics?

• Genuine MAX98357A amplifier modules

• Ideal for ESP32, Raspberry Pi, and embedded audio projects

• Fast delivery across Bangladesh

• BDTronics supplies audio modules, ESP32 boards, Raspberry Pi accessories, Arduino modules, robotics components, sensors, displays, development boards, and electronic components

• Trusted supplier for makers, engineers, students, and industrial developers in Bangladesh

• BDTronics offers a wide selection of embedded systems, IoT hardware, and digital audio solutions

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