Itu use dual polarity power supply to work, then you may use this power supply to supply the circuit. Use 5A transformer with center tap output, change the diode with bridge diode 5A, use capacitor minimum of 6800uF/63V for better output supply.

200 Watt High Quality Audio Amplifier Schematic and PCB Layout

Schematic diagram:

Component part list:

Description:

Top PCB Layout:

Bottom PCB Layout:

Good luck in bultd 200W high quality audio amplifier project

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This amplifier can be used for practically any application that requires high power, low noise, distortion and excellent sound. Examples would be Sub-woofer amp, FOH stage amplifier, One channel of a very high-powered surround sound amplifier etc.

For detail explanation about how this circuit works include the large schematic diagram, power supply schematic diagram and complete component listing, download this complete article

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