Description
The JJ 5U4GB rectifier is used in many audio and guitar amplifier circuits and can be used to replace 5U4G & 5U4GB. In guitar amplifiers this valve is mainly used in American designs such as Fender and Mesa Boogie.
The JJ 5U4GB is an economically priced valve that greatly outperforms the Chinese 5U4G and 5U4GB that seem to be used in many far eastern made amplifiers.