PAM8403 3W Stereo Audio Amplifier with Volume Control DIY PCB
PAM8403 3W Stereo Audio Amplifier with Volume Control DIY PCB
The PAM8403 Digital 3W Stereo Audio Power Amplifier with Volume Control DIY PCB is also known as a Mini Audio Amplifier Module or Micro Class-D Audio Amplifier.
This compact 3W Class D stereo amplifier, featuring a volume control with a built-in power switch, is powered by the PAM8403 IC. It delivers crisp, high-quality audio for 4 or 8 Ohm speakers, with up to 3W output per channel at 5V.
The board is clearly labelled for easy connection: + and - for each speaker, power inputs, and audio input channels. Pair it with our MP3 Modules to enjoy rich stereo sound.
This amplifier board could be powered by a 5V DC USB Power supply.
The power and volume control potentiometers 6mm split shaft is compatible with most universal push-fit knobs.
Top Performance for DIY Projects – Perfect for Tech Enthusiasts
- Compact 3W stereo amplifier for high-quality sound.
- Digital Class-D efficiency ensures minimal heat and maximum clarity.
- Easy to use for a range of DIY projects, including Arduino, ESP32 and Raspberry Pi setups.
- Built-in volume control for precise audio tuning.
- Durable PCB design for long-lasting reliability.
Get ready to enhance your projects with robust sound quality – order now!
Features of the PAM8403 Digital 3W Stereo Audio Power Amplifier with Volume Control DIY PCB:
- Compact, lightweight design ideal for small projects
- 3W output per channel for clear, crisp audio
- Low power consumption with high efficiency
- Built-in volume control knob for easy adjustments
- Works with USB or battery power supply
Applications for the PAM8403 Digital 3W Stereo Audio Power Amplifier with Volume Control DIY PCB:
- DIY audio amplifier projects
- Portable speaker projects
- Audio enhancement for hobbyist electronics
- Integration with Arduino, ESP32 and Raspberry Pi projects
- Compact audio setups for home use
Technical Specifications:
• Sold as: Each.
• Condition: New.
• Packaging: Bulk.
• Stock unit: Each.
• Chipset: PAM8403.
• Input Type: Stereo.
• Model: GF1002 GS27076.
• PCB Size: 28mm x 20mm.
• Signal to Noise Ratio: 90 dB.
• Output Power: 3W Per Channel.
• Operating Voltage: 2.5V to 5.5V.
• Maximum Output Power: 2x 3W.
• Product Category: Audio > Amplifiers.
• Product Code: AMP-PAM8403-3W-STEREO-NZ.
• Product Type: DIY Digital Stereo Audio Amplifier.
• Volume Control: Integrated Rotary Potentiometer.
• On/Off Switch: Via Integrated Rotary Potentiometer.
• Product Description: PAM8403 Digital 3W Stereo Audio Power Amplifier with Volume Control DIY PCB.
• Potentiometer Shaft Overall Length: 15 mm.
• Potentiometer Rotating Shaft Length: 10mm.
• Potentiometer Threaded Bushing Length: Approximately 5mm.
• Potentiometer Mounting: Through-hole with threaded bushing.
• Potentiometer Shaft Type: Standard 6mm diameter split-spline shaft.
• Potentiometer Type: B50K Linear Rotary Potentiometer with On/Off Switch.
• Potentiometer Mounting: Through-hole, with threaded bushing, includes washer and nut.
• Potentiometer Mounting Hardware Included: A securing nut and washer are included for panel or enclosure mounting.
Important: Ensure your power supply stays below 5.5V and always connect the “+” and “-” correctly. Reversing polarity may damage the board permanently and void the warranty. This amplifier is for separate speakers only. It cannot be used with headphones, as they share a common ground. Connecting outputs together may damage the amplifier.
Package includes: 1x PAM8403 Digital 3W Stereo Audio Power Amplifier with Integrated On/Off and Volume Control DIY PCB.
⚠️ Does not include: Power Adapter, Speakers, Enclosure, Wiring. The image is for illustrative purposes only. Due to variations in camera settings, lighting, manufacturing processes, monitors, and supply, colours may differ. Product appearance and specifications are subject to change without notice.
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We welcome & answer all questions.
Frequently Asked Questions (FAQs):
Q. What speakers would be best suited to the PAM8403 amplifier?
The PAM8403 amplifier outputs up to 3 watts per channel at 4 ohms. Given its specifications, it's best suited for small speakers with the following characteristics:
- Impedance: 4 ohms or 8 ohms. The PAM8403 can drive either, but you’ll get maximum output with 4-ohm speakers.
- Power Rating: Around 3 watts or slightly higher. Since the amplifier itself only outputs up to 3 watts per channel, speakers with a power rating of 3-5 watts are ideal. Using speakers rated much higher won’t harm them, but may result in lower volume output.
- Size: Due to its power, small speakers are generally recommended. 2 to 3-inch speakers are typically sufficient, especially for near-field or personal listening setups.
Recommended Speaker Types:
- Mini bookshelf speakers or satellite speakers with 3-5 watts power handling
- Portable speaker drivers that fit within the 3-watt range
- Small full-range speakers for compact audio projects
Example Options:
- 4-ohm, 3-watt mini full-range speakers (often used in DIY projects)
- 2-inch or 3-inch drivers designed for low-power amplifiers
- Replacement speakers for small radios or portable devices
These speakers will complement the PAM8403 amplifier, delivering clear sound at lower volumes, making them ideal for personal use, desktop setups, or small DIY audio projects.
We welcome & answer all questions.
Shaft: 6mm split-spline shaft (standard size)
