Vacuum Tube Amplification System Capable of Reducing Residual Noise and a Grounding Method Thereof

摘要

The vacuum tube amplification system includes: a first power circuit electrically connected to convert a utility power alternating voltage to a first DC voltage; a first vacuum tube amplifying load circuit having a first input terminal and a first ground terminal and using a first DC voltage as an operating voltage; a second power circuit electrically connected to convert the utility power alternating voltage to a second DC voltage; and a second vacuum tube amplifying load circuit having a second input terminal and a second ground terminal and using a second DC voltage as an operating voltage. The first ground terminal is not directly electrically connected to the second ground terminal, and the first ground terminal and the second ground terminal are each electrically connected to the compliance ground of the utility AC voltage through a jumper wire 0 ohm resistor.