The MESA 5U4GB Rectifier Tube is the go-to rectifier tube for all the new tube-rectified MESA amps in production . The 5U4GB produces that “traditional vintage sag”, and gives the most spongy and compressed feel among MESA’s three tube rectifiers (the 5AR4 and 5U4G being the other two).

It is similar in size to a 6L6 power tube so, please take special care to install them in the correct tube position(s), especially when replacing 6L6’s at the same time. 5U4GB Rectifier Tubes are used in MESA Amps like the Dual and Triple Rectifiers, Road King, and the Roadster.

5U4GB Rectifier Tube (Individual) from Mesaboogie is 100% original and brand new. We, at Melody House take pride in our after sales service and support. For further details on the 5U4GB Rectifier Tube (Individual), Mesaboogie, simply write to us to consult an expert or order online and we will take care of the rest. Happy Shopping!