基于KEIL51的一款高性能的数字功放的完整代码，核心芯片用的是PT2322。

本电路以LM3886芯片制作的一款高品质大功率功放板，资料中含有电路原理图和PCB板。制作完后音质效果很好。,LM3886 chips in the circuit produced a high-quality high-power amplifier board, the information contained in the circuit schematic and PCB board. After making a very good sound quality.

用ＮＥ５５３２制作优质前放，用“运放之星”ＮＥ５５３２制作了一款前置放大电路加在功放输入端，比单纯的用功放芯片，音效、响度明显得到了改善。资料中有制作前放电路原理图介绍，印刷电路板图，元件布置图-Production of high-quality preamplifier with NE5532, use the "Star of the op amp" NE5532 produced a preamplifier circuit added to the amplifier input, t