I have a Vox Buchingham amp that has a two prong AC cord. Amp hisses, and wonder if I should add a ground wire cord to the chassis and to the power supply, they are seperate. The RC plug I assume acts a a nuetural of sorts but not sure. Also is there a capaictor that needs to be eleimated when I do this. Touching a wire to the metal chassis to eart ground creates a rather good spark when it touches.

Thank You and Happy new Years All

Brett