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This project features a custom-designed and efficient 4-layer Class-D stereo audio amplifier based on the popular PAM8610 IC, delivering up to 2x 10W output power.
Designed by Stylt.
4-Layer PCB Stackup: 4-layer board design with dedicated power and ground planes for superior thermal dissipation, low EMI, and minimal signal crosstalk:
F.Cu (Top): Component placement & signal routing
In1.Cu (Inner 1): Solid Ground Plane (GND)
In2.Cu (Inner 2): Power Plane (+12V / VCC)
B.Cu (Bottom): Signal & secondary power routing
Wide Supply Voltage Range: Operates reliably from 9V to 12V DC via standard 5.5 x 2.1 mm DC Barrel Jack.
Integrated Volume & Power Control: Quality 10K logarithmic potentiometer with an integrated ON/OFF switch.
Robust Connections: 3.5 mm AUX stereo input jack and heavy-duty green screw terminal blocks for Left (L) and Right (R) speakers.
Clean Audio Architecture: Bulk 2200 µF electrolytic decoupling capacitor on power supply lines + LC output filters (33µH/22µH inductors) for ripple noise reduction and high signal fidelity.
Compact & Mountable: M2 mounting holes, precise silkscreen labeling, and integrated decorative QR code.
🛠️ Hardware Specifications
Parameter
Specification
Amplifier IC
PAM8610 (Class-D Stereo)
Output Power
10W + 10W RMS (into 8Ω @ 12V DC)
Supply Voltage
9V – 12V DC
PCB Stackup
4-Layer FR4 (Top, In1 [GND], In2 [PWR], Bottom)
Power Connector
5.5 x 2.1 mm DC Barrel Jack
Audio Input
3.5 mm Stereo AUX Jack
Speaker Outputs
Screw Terminal Blocks (Left & Right)
Potentiometer
10K Logarithmic with ON/OFF Switch
Filtration
2200 µF Bulk Electrolytic Cap + Output LC Filters
🧩 System Block Diagram
📦 Production & Manufacturing Files
All production files required for manufacturing and PCBA assembly are located in the production/ directory or under GitHub Releases: