SPECIFICATIONS

Amplification Type: Class D

Brand Name: NONE

Chip Specification: Large Chip (Standard Package)

Choice: yes

Condition: New

High-concerned chemical: none

Model: MAX98357A

Origin: Mainland China

Output Power: 3.2W (5V Supply, 3Ω Load)

PCB Color: Purple

Pin Header Status: No Soldered (With Pin Accessories Included)

Product Name: MAX98357A I2S Audio Amplifier Module (Purple Board Large Chip)

Type: Module

Working Voltage: DC 2.5V-5.5V

Purple Board Large Chip｜I2S Audio Amplifier｜No Soldered Pins (Free Adaptation)｜3.2W Class D｜For ESP32/Raspberry Pi

1-10pcs MAX98357A I2S Audio Amplifier Module (Purple Board Large Chip) No Soldered Pins 3.2W Class D for ESP32 Raspberry Pi DIY Audio

1. Purple Board + Large Chip: Purple PCB anti-oxidation, large chip better heat dissipation & stable sound

2. No Soldered Pins: Weld straight/bent pins freely, fit breadboard/finished devices, no pin removal

3. 3.2W Class D: 92% efficiency, low power/heat, no heatsink needed

4. I2S Digital Input: 8-96kHz sampling rate, clear sound no distortion

Purple PCB anti-oxidation, no corrosion after long-term use; large chip large heat dissipation area, only 42℃ after 1h continuous work (ordinary small chip up to 55℃).

Comes with straight pins + terminal block, weld straight/bent pins for breadboard, or weld directly into finished devices, flexible for different scenarios.

Supports I2S digital input, GAIN pin can set 2x/6x gain, fit speakers of different sensitivity.

DIY Portable Bluetooth Speaker: Pair with ESP32 for Bluetooth, drive small speakers to play music
Raspberry Pi Audio Output: Replace onboard audio, improve sound quality for smart speaker projects
Embedded Device Voice Broadcast: Audio output for IoT/industrial control devices
Maker Education Project: Entry module for learning I2S protocol & audio amplification