Product Description
PAM8403 ultra-miniature digital amplifier board adopts high-quality Class D amplifier chip, features high-definition sound quality and excellent noise suppression performance.
Upgraded with 470uF power filter capacitor and 1.6mm glass fiber PCB, delivers stable 3W+3W stereo output. Equipped with integrated switch potentiometer, you can adjust volume and turn off power directly by rotating counterclockwise.
Ultra-compact design, can be easily installed in various small digital devices, perfect for DIY portable speakers, USB audio projects and small audio system upgrades.
Technical Specifications
- Model: PAM8403 / GF1002
- Amplifier Type: Class D (No LC filter required)
- Rated Working Voltage: DC 2.5V-5V
- Maximum Limit Voltage: 5.5V
- Output Power: 3W×2 Stereo (5V input)
- Supported Speaker Impedance: 4Ω / 8Ω
- Product Size: 29.5×20.2×15mm (excluding potentiometer lever)
- PCB Material: 1.6mm Glass Fiber Board
Core Features
- Excellent noise suppression: No audible noise even when ear is close to speaker without audio input
- Unique non-LC filter design, can be directly powered by computer USB port
- Double-sided PCB wiring, effectively solves ground potential balance and inter-channel crosstalk issues
- All components are machine-welded, ensuring stable and reliable quality
- Long service life up to 15 years
- Integrated switch potentiometer for convenient volume control and power on/off
⚠️ CRITICAL USAGE WARNINGS
1. **NEVER** connect the negative terminals of left and right channels together, this will permanently burn the amplifier IC
2. **Always connect speakers (load) first before powering on** the amplifier board
3. Do not exceed 5.5V input voltage to avoid damaging the module
Package List
1 × PAM8403 Mini Digital Amplifier Board with Switch Potentiometer
Notes
1. Slight 1-2mm size deviation exists due to manual measurement
2. Item color may have minor differences influenced by different monitor displays and lighting conditions
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