Hi friends, This time I received a power amplifier from one of my subscriber. He had a problem during the assembly process so he sent it to me to fix. In this video I added several parts to the amplifier kit and replaced several parts according to the owner's request. The amplifier board used is the amplifier board that I made in the previous video. You can see it here: https://youtu.be/OiheGPmbr8c The owner ships it without a transformer to reduce shipping costs.