A great quality in power stages can be obtained with aluminum boards where the heat dissipation is more direct and the simplicity of assembly are crucial. A large component mounting density can also be obtained. This PCB has 40 power transistors and more than 100 components in total, driving a current of more than 400A. It was made with 3 oz of CU to achieve a higher performance and provide greater mechanical strength to the whole. The final result ... Magnificent .. !!