High Quality MAX98357A 3W I2S Audio Amplifier Small Size Powerful Sound for DIY Bluetooth Speaker Projects
SPECIFICATIONS
Brand Name: KOQZM
Built-in Battery: No
Choice: yes
High-concerned chemical: none
Input Type: USB
Origin: Mainland China
Output Type: LINE OUT (AUDIO OUT)
Recommended Headphone Maximum Impedance: < 32 Ohm
Description:
Get superior audio performance from the MAX98357/MAX98357A I2S 3W Class D Amplifier Breakout – a high-efficiency DAC Decoder for your audio projects.
Features:
- 3.2W output at 4Ω load at 10% THD; 1.8W output at 8Ω, also at 10% THD
- Compatible with I2S sampling rates between 8Khz and 96Khz
- Five selectable gain settings: 3dB, 6dB, 9dB, 12dB, and 15dB, requires no MCLK signal
- Easy plug-and-play with single power source, supports 35 clock settings and covers 128 digital audio formats automatically
- Perfect for Raspberry Pi, ESP32, and other development boards with MCU I2S audio output
Pinout Specifications:
- LRC: Provides left/right clock in I2S/LJ and TDM synchronization
- BCLK: Bit clock signal input
- DIN: Input for digital audio signals
- GAIN: Determines channel and gain selection; fixed to 12DB in TDM mode
- GND: Power ground
- VCC: Accepts DC 2.5V to 5.5V
- Materials: Plastic and metal components
- Physical dimensions: 19.1 x 17.7 mm
Package: Includes 1 complete set
Note:
1. Actual product color might slightly vary from web images due to different monitor and lighting conditions.
2. Measurement tolerances may result in slight data deviations.














- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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