400 Watt Hi-Fi Audio Power Amplifier PCB Board (Bare PCB)
This PCB is designed for building a high-power mono audio amplifier using a dual-rail DC power supply. Output performance depends on components used and assembly quality.
Output Power:
Maximum dynamic output power: up to 400 W (depends on supply voltage, load, components, and heat dissipation)
Performance:
Total Harmonic Distortion (THD): approximately 0.01% (depends on components and build quality)
Working Voltage:
Dual supply: ±18 V to ±45 V DC
Recommended transformer: 30-0-30 VAC, 5 A to 10 A (step-down)
Compatible Output Transistors:
2SC5200 / 2SA1943
TTC5200 / TTA1943
NJW0281 / NJW0302
D718 / B688
Speaker Compatibility:
Supports 4 Ω and 8 Ω speaker loads
Suitable for speakers rated from 100 W to 600 W
Construction:
Bare PCB (components not included)
Designed for through-hole components
Components are commonly available
Configuration:
Requires proper heat sinking, component selection, and assembly
Designed for dual-rail DC operation using a center-tapped transformer
Final performance depends on build quality and power supply design
