My brother Hasan is an old project of two channels 300w and 500w versions. Pre-shared 500W 250W Hi-Fi Transistor Amplifier Circuits and SG3525 EI33 ATX 200-600w DC-DC Converter for auto amplifier projects Output power transistors of the Amplifier Circuits... Electronics Projects, Car Amplifier Circuit 2X300W 500W SG3525 DC DC Converter "audio amplifier circuits, dc dc converter circuit, sg3525 circuit, " Date 2020/07/03