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This power amplifier can be made in every electronic lab. The design is based on AVT2762 on two pairs of transistors IRF240 (schematic can be found on the Internet) with minor changes such as resistor for quiescent current regulation was changed to a smaller one, and resistors responsible for the protection were changed to bigger ones. At full power, the amplifier would turn off. Toroidal transformer 600W 2~35V connected through soft start provides the power. Rectifier bridge 25A and 4 capacitors 10000uF 63V are parts of the power supply. Housing was taken from SKYTEC PRO-240.
Comparison of the transformers – original one and 600W:
Comparison of the board of PRO240 and one AVT2762 with two pairs:
The power amplifiers without heat sinks:
Everything put inside the power amplifier:
How it looks in the housing:
Link to original thread (useful attachment) - AVT2762 na dwoch parach IRF240