
PAM8403 Digital Amplifier Board 2 Channels 3W Class D HW-104
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The PAM8403 HW-104 Stereo Audio Amplifier Module is a compact, high-efficiency Class D amplifier capable of delivering 3W per channel with minimal distortion. Designed for DIY audio projects, Bluetooth speakers, and portable devices, this module provides crystal-clear stereo sound while consuming very little power. Its small PCB design and low heat generation make it ideal for battery-powered applications and compact electronic systems.
Features:
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High-Efficiency Class D Design: Energy-saving amplifier with >90% efficiency and low heat generation.
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Stereo Output: Dual-channel 3W + 3W output for balanced left-right audio performance.
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Wide Voltage Range: Operates from 2.5V to 5.5V DC, suitable for USB or lithium battery-powered systems.
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Compact Size: Small PCB (30mm x 20mm) for easy integration in tight enclosures.
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Low Distortion & Clear Sound: Ensures clean audio with low THD (≤10%) and high SNR (≥85 dB).
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No Heat Sink Required: Efficient Class D design eliminates the need for bulky cooling components.
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Easy to Use: Simple connection interface with labeled pins for power, speakers, and input signals.
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Compatible with Various Audio Sources: Works with smartphones, Bluetooth modules, MP3 players, and Arduino-based audio systems.
Specifications:
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Model: PAM8403 (HW-104)
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Amplifier Type: Class D
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Channels: 2 (Stereo)
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Output Power: 3W per channel (at 4Ω, 5V input, THD+N = 10%)
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Operating Voltage: DC 2.5V – 5.5V
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Efficiency: >90%
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Speaker Impedance: 4Ω – 8Ω
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Signal-to-Noise Ratio (SNR): ≥85 dB
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Total Harmonic Distortion (THD): ≤10%
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PCB Dimensions: Approx. 30mm x 20mm
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Weight: Approx. 3g
Applications:
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DIY Bluetooth speaker projects
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Portable and USB-powered audio systems
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Arduino and Raspberry Pi sound output modules
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Electronic toys and small gadgets
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MP3 and audio amplifier circuits
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Classroom and hobby electronic projects
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Battery-operated sound devices
How to Use:
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Connect VCC and GND pins to a 3.7V–5V DC power supply (e.g., USB or lithium battery).
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Connect L and R speaker outputs to 4Ω–8Ω speakers.
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Connect AUDIO IN L and AUDIO IN R to your sound source (Bluetooth module, audio jack, or DAC).
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Adjust volume externally from the audio source (the module does not include a potentiometer).
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Ensure proper polarity and wiring before powering up.
Benefits:
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Compact and efficient for small enclosures and low-power devices.
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Delivers clean, stereo-quality sound at low voltage.
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Ideal for battery-driven audio projects.
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Easy integration with microcontrollers and audio modules.
Package Includes:
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1 x PAM8403 HW-104 Stereo Audio Amplifier Module
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General Questions
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What is the latest price of the PAM8403 Digital Amplifier Board 2 Channels 3W Class D HW-104 in Bangladesh?
The latest price of PAM8403 Digital Amplifier Board 2 Channels 3W Class D HW-104 in Bangladesh is Special Price BDT 50.00 Regular Price BDT 80.00 . You can buy the PAM8403 Digital Amplifier Board 2 Channels 3W Class D HW-104 at the best price on BDTronics.com or contact us via phone.
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Where to buy PAM8403 Digital Amplifier Board 2 Channels 3W Class D HW-104 in Bangladesh?
You can buy PAM8403 Digital Amplifier Board 2 Channels 3W Class D HW-104 online by ordering on BDTronics.com or directly collect by visiting our store in person. BDTronics is a trusted provider of high-quality electronics, 3D printers, solar systems, and robotics parts. We offer fast shipping across the country via courier service.
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What are the delivery options of PAM8403 Digital Amplifier Board 2 Channels 3W Class D HW-104 in Bangladesh?
We provide home delivery service all over Bangladesh. We support Cash on Delivery, Online Bank Transfer, bKash and Credit Card (Visa/ MasterCard/ Amex) payment solutions. The delivery time usually takes 1-2 days inside Dhaka and 2-4 days outside Dhaka.
