BIG BULB VINTAGE RECTIFIER TUBE TO SUIT HIGH-END AUDIO AMPLIFIERS AS WELL AS RECTO-TYPE AMPS

Big bulb vintage rectifier tube, used in high-end audio amplifiers but also in modern recto-type amps, such as the Mesa Boogie Double/Triple Rectifier. It can replace the 5U4GB. Its tone is smoother than that of a solid-state rectifier.