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Digital Stereo Audio Amplifier Board Pam8403 Mini Two Channel 2x3w Class d Audio Power Amplification Module
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Digital Stereo Audio Amplifier Board Pam8403 Mini Two Channel 2x3w Class d Audio Power Amplification Module in Lahore Pakistan
๐ PAM8403 Mini Digital Stereo Audio Amplifier Board โ 2x3W Class D Dual Channel
โ Product Overview
The PAM8403 Mini Stereo Audio Amplifier Board is a compact and energy-efficient Class D amplifier module that delivers 2x3W output power. Based on the highly reliable PAM8403 IC, this board is perfect for low-power, portable, or DIY audio applications where space and efficiency are critical.
With its dual-channel stereo output, this amplifier is ideal for driving small 4ฮฉ or 8ฮฉ speakers using a 5V power supply โ making it a popular choice for Bluetooth speakers, DIY audio systems, portable media players, and Arduino-based sound projects.
โจ Key Features
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๐ Stereo Output: 2x3W into 4ฮฉ speakers at 5V
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๐ Ultra-Efficient Class D Amplifier: Up to 90% efficiency
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โก Low Power Consumption: Perfect for USB-powered or battery-operated devices
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๐ Ultra Compact Size: Ideal for tight enclosures or embedded projects
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๐ง No Heat Sink Required: Low heat generation at normal volumes
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๐๏ธ Volume control compatible: Works with external potentiometers (optional)
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๐ ๏ธ Simple 4-pin input: Easy integration with microcontrollers or audio modules
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๐ถ Noise Filtering Capacitors: Clean audio with low distortion (THD < 10%)
๐ Technical Specifications
| Parameter | Value |
|---|---|
| IC Chip | PAM8403 |
| Output Power | 3W + 3W (at 5V, 4ฮฉ speakers) |
| Operating Voltage | 2.5V โ 5.5V DC |
| Input Type | Analog audio (Left + Right) |
| Output Type | 2-channel speaker output |
| Efficiency | Up to 90% |
| THD + N | < 10% |
| Speaker Impedance | 4ฮฉ โ 8ฮฉ |
| Dimensions | ~21mm x 18mm x 3mm |
| Heat Sink | Not required under normal load |
๐ Pinout & Connections
| Pin Name | Description |
|---|---|
| VCC | 5V DC power input |
| GND | Ground |
| L IN | Left audio input |
| R IN | Right audio input |
| L OUT +/โ | Left speaker output |
| R OUT +/โ | Right speaker output |
๐ ๏ธ How to Use the PAM8403 Amplifier Board
๐งฐ Basic Wiring Example:
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Power the module using a regulated 5V DC supply (can be USB).
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Connect analog audio source:
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L IN: Left channel input
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R IN: Right channel input
(Use 3.5mm jack, audio module, or DAC)
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Connect speakers:
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L OUT +/โ: Connect to left speaker
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R OUT +/โ: Connect to right speaker
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Optional: Use a potentiometer (10kฮฉโ50kฮฉ) on inputs for volume control.
โ ๏ธ Do not exceed 5.5V input โ doing so can permanently damage the chip.
๐ Example Use Cases:
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DIY USB-powered stereo speakers
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Portable Bluetooth speaker projects
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Small desktop audio amplifier
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MP3/WAV player output amplifier
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Embedded audio in 3D printers, toys, or alarms
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Arduino or ESP32 sound output enhancement
๐ฆ What's Included
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1 ร PAM8403 Mini Digital Stereo Amplifier Board (2x3W)
๐ท๏ธ Suggested SEO Product Titles
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PAM8403 2x3W Mini Stereo Audio Amplifier Board โ Class D 5V Module
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Mini Dual Channel Audio Amplifier Module 5V โ PAM8403 Class D 3W+3W
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PAM8403 Stereo Audio Power Amplifier Board โ 5V USB Powered 2 Channel
โ ๏ธ Safety & Usage Tips
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Use a clean 5V power source to avoid noise
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Avoid shorting speaker outputs
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Use passive speakers only (not powered speakers)
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Recommended speaker: 3W, 4ฮฉ or 8ฮฉ, full-range
