TPA3251 is a high-performance D power amplifier chip, which has D efficiency and can bring real high-end sound circuits.Transparent sound, fast low-frequency response, strong mid frequency texture, high frequency smoothness, and minimal tangent loss. NE5532 chip can effectively reduce distortion and improve audio quality and restoration. Filter circuit composed of high-quality inductors and correction capacitors ensures clear and stable power output and provides the best listening experience. Large heat sink enables the amplifier to maintain good heat dissipation performance under continuous high power output.Solved the heat dissipation problem.