电源作为电子电路的能源站，有着极其重要的作用。而在高保真音响中，电源的质量就更加重要了，它的品质高低可能直接影响到整部功放的音质，因此下些力气在电源上是有必要的，也是必不可少的。在早些年的功放电路中，前级放大电路的供电部分通常是直接取自后级功率放大部... Power supply as a power station of electronic circuits, has an extremely important role. In high-fidelity audio, the power quality is even more important, and its quality may directly affect the quality of the entire amplifier, so some of the power in the power is necessary and indispensable. In the early years of the power amplifier circuit, the power supply of the preamplifier circuit is usually taken directly from the power amplifier of the rear stage.