250+250W stereo amplifier circuit diagram, pcb and comparison with online available board

in this video you will see a circuit diagram of 250 +250watt stereo amplifier board this amplifier circuit board PCB is available with amplifier PCB channel at reasonable price it is best for DIY purpose and its sound quality and low frequency responsive better than other available circuit it has crystal clear crispy sound with little vibration bass effect. I hope DIY person will enjoy this circuit
circuit diagram https://drive.google.com/file/d/1wB67m_kgf0nxvSXimjazMXfccf9-4lvK/view?usp=drivesdk