2 Channel HiFi Class AB Power Amplifier PCB Symasym5-3 Design

Introducing the SYM5-3 Power Amplifier, an excellent choice for audio enthusiasts and DIY hobbyists seeking high-quality sound performance. This amplifier circuit is renowned for its ultra-low distortion and exceptional sound clarity, making it ideal for home audio systems and driving high-power HIFI speakers over 6.5 inches. Operating in a high partial Class A and B configuration, it offers a clean output with no background noise.

The SYM5-3 is built to provide a power output of up to 200W per channel at 2Ω, 150W per channel at 4Ω, and 100W per channel at 8Ω. It features a stable and reliable design with straightforward assembly, using voltage feedback suitable for dedicated HIFI enthusiasts. Note that this is a Bare PCB product, requiring you to match all components yourself.

### Features:

- Class AB Configuration: Ensures high efficiency with superb sound quality.
- Power Output:
- 200W + 200W at 2Ω
- 150W + 150W at 4Ω
- 100W + 100W at 8Ω
- Input Voltage: DC +/-35V to +/-45V (Recommended DC +/-40V)
- Total Harmonic Distortion (THD):
- 0.002% at 1 KHz full power
- 0.005% at 10 KHz full power
- Transistor Components:
- Power Out Transistor: ON NJW0302/NJW0281
- Drive Tube: Toshiba 2SA1930/2SC5171
- Small Signal Transistors: MPSA18/2N5401/2N5551/BC546
- PCB Dimensions: 138mm x 50mm

This amplifier provides a seamless building experience with its stable circuit and minimal distortion, making it the perfect addition to any audio setup for superior sound output.