朋友，当你看到这个电路图时，也许会感到茫然。它既不象前置也不是纯后级功放。等你看完以下的解释就明白它是做什么的，而对改过你的扩音机也许会有帮助。该控制器除具有响度控制、平衡控制及高低音控制外，还具有大音量控制、临场感控制和超低音控制等三大特色控制。功能新 Friend, when you see this circuit diagram, you may feel dazed. It is neither preamp nor pure post amp. After you read through the explanations below, you will understand what it is doing, and it may be helpful to change your megaphone. The controller in addition to the loudness control, balance control and bass control, but also has a large volume control, presence control and subwoofer control of the three major features such as control. New features