Description
High-Efficiency MAX 98357 I2S 3W Class D Audio Decoder Module for ESP32, Raspberry Pi & Arduino
Note: This modules comes with Soldered and Unsoldered version, we ship it randomly.
The MAX98357 I2S Class D Audio Decoder Module is a compact, high-performance amplifier that converts I2S digital audio input into powerful analog audio output. Designed for projects using ESP32, Raspberry Pi, Arduino, or other microcontrollers, it delivers crisp, clear sound output up to 3W while maintaining excellent power efficiency.
This module simplifies audio integration in digital systems by removing the need for a separate DAC (Digital-to-Analog Converter) and amplifier, making it ideal for IoT devices, smart speakers, and embedded audio applications.
Features:
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Digital I2S Interface: Directly interfaces with microcontrollers supporting I2S output.
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3W Class D Amplifier Output: Efficient and distortion-free sound performance.
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Integrated DAC and Amplifier: No external components required.
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Wide Operating Voltage: Works with 2.5V–5.5V power supply.
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Supports Left/Right/Mono Channel Selection using configuration pins.
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Compact Design: Perfect for embedded or portable audio applications.
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Low Noise Performance: High signal-to-noise ratio (SNR) and minimal distortion.
Technical Specifications:
| Parameter | Specification |
|---|---|
| Model | MAX98357 |
| Output Power | 3W @ 4Ω, 5V |
| Power Supply | 2.5V–5.5V DC |
| Interface Type | I2S Digital Audio |
| Channel | Mono (configurable Left, Right, or Mono) |
| Efficiency | Up to 92% |
| Signal-to-Noise Ratio (SNR) | 100dB |
| THD+N | < 0.1% |
| Dimensions | ~18.8mm × 17.7mm × 10mm |
| Mounting Type | PCB Mount |
Applications:
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Smart Speakers
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Internet of Things (IoT) Devices
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Portable Audio Systems
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DIY Music Players
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Voice Assistant Projects
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ESP32 Audio Projects
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Raspberry Pi Audio Output
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The hardware delivered is a bottom-tier counterfeit clone, structurally divergent from authentic Maxim Integrated (Analog Devices) silicon specifications.
Unmarked Epoxy Package: The central IC lacks any laser-etched part numbers, manufacturer logos, or date codes. This is a blank molded package housing an unverified, generic clone die rather than true Class-D audio amplification circuitry.
Die Footprint Mismatch: The surface-mount package footprint is physically smaller than the standard WLP (Wafer-Level Package) or TQFN layout of an authentic MAX98357A, confirming a cheaper substitute die was dropped onto a generic PCB to cut manufacturing costs.
Sourcing Failure: This shipment exposes a total breakdown in vendor component screening. Distributing unbranded, third-copy Chinese OEM trash instead of functional silicon compromises the entire audio pipeline.
It is working properly. I tried it with different projects and worked properly. I will recommend this
High price