Mesa Boogie 5U4GB Rectifier Tube

Based upon classic 1950's technology, the 5U4GB is a new and vastly improved 5U4 design that is extremely reliable and consistent, as well as much more compact. Approximately the size of a 6L6 power tube, it produces a flexible and resilient feel that is a bit more controlled and slightly less "saggy" than the "Coke Bottle" 5U4G. Amazing feel and exceptional overall quality. Measures 3.75" from the bottom of base to the top of glass.

Substitute in: Dual Rectifier, Lone Star, Mark V, Road King, Roadster, Stiletto, Tremoverb & Triple Rectifier.