The MakerHawk MAX98357 I2S is a mono digital Class-D audio amplifier designed to deliver clear and powerful audio output from an I2S digital audio source. Based on the MAX98357A chip, this module converts digital audio signals directly into amplified speaker output, eliminating the need for an external DAC.
It is fully compatible with microcontrollers and embedded platforms such as ESP32, ESP8266, Raspberry Pi, Arduino (I2S), and other systems supporting the I2S interface. Thanks to its high energy efficiency and low thermal dissipation, it provides a reliable solution for embedded audio and IoT projects.
Key Features
Mono digital Class-D audio amplifier
I2S digital audio interface
Output power up to 3 W (depending on supply voltage and load)
High efficiency and low power consumption
Low distortion and low noise
No external DAC required
Compact form factor, easy to integrate
Technical Specifications
Main chip: MAX98357A
Interface: I2S (DIN, BCLK, LRC)
Supply voltage: 3.3 V to 5 V
Recommended speaker impedance: 4 Ω to 8 Ω
Output type: mono
Amplifier class: Class D
Operating temperature: -40 °C to +85 °C
Typical Pinout
VIN / VDD: 3.3 V to 5 V power supply
GND: ground
DIN: I2S audio data input
BCLK: I2S bit clock
LRC / LRCLK: left/right channel clock
GAIN / SD: gain control or shutdown (depending on version)
SPK+ / SPK-: speaker output
Advantages
Direct digital audio-to-speaker conversion
Stable and reliable audio quality
Easy integration with ESP32 and Raspberry Pi
Very low standby power consumption
Ideal for compact audio systems
Applications
Embedded audio players
Voice assistants
IoT projects with audio output
Audio alerts and notification systems
Educational and DIY projects
The MakerHawk MAX98357 I2S is a mono digital Class-D audio amplifier designed to deliver clear and powerful audio output from an I2S digital audio source. Based on the MAX98357A chip, this module converts digital audio signals directly into amplified speaker output, eliminating the need for an external DAC.
It is fully compatible with microcontrollers and embedded platforms such as ESP32, ESP8266, Raspberry Pi, Arduino (I2S), and other systems supporting the I2S interface. Thanks to its high energy efficiency and low thermal dissipation, it provides a reliable solution for embedded audio and IoT projects.
Key Features
Mono digital Class-D audio amplifier
I2S digital audio interface
Output power up to 3 W (depending on supply voltage and load)
High efficiency and low power consumption
Low distortion and low noise
No external DAC required
Compact form factor, easy to integrate
Technical Specifications
Main chip: MAX98357A
Interface: I2S (DIN, BCLK, LRC)
Supply voltage: 3.3 V to 5 V
Recommended speaker impedance: 4 Ω to 8 Ω
Output type: mono
Amplifier class: Class D
Operating temperature: -40 °C to +85 °C
Typical Pinout
VIN / VDD: 3.3 V to 5 V power supply
GND: ground
DIN: I2S audio data input
BCLK: I2S bit clock
LRC / LRCLK: left/right channel clock
GAIN / SD: gain control or shutdown (depending on version)
SPK+ / SPK-: speaker output
Advantages
Direct digital audio-to-speaker conversion
Stable and reliable audio quality
Easy integration with ESP32 and Raspberry Pi
Very low standby power consumption
Ideal for compact audio systems
Applications
Embedded audio players
Voice assistants
IoT projects with audio output
Audio alerts and notification systems
Educational and DIY projects
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