Mesa/Boogie 5U4GB Rectifier Tube Reviews
You'll find the MESA 5U4GB inside all the new Mesa/Boogie tube amplifiers. As M/B puts it, it's their "factory favorite" — and for good reason. The MESA 584GB is based on 1950s tube technology, and is essentially an improvement on the 5U4 design. Not only is the tube more reliable, but it's much more compact. In fact, it's about the size of a 6L6 power tube, so take caution when you're positioning it inside your amplifier. What you'll get is a traditional "vintage sag" with an elastic and compressed feel — very cool, MESA 5U84GB.
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Highest Rated Reviews
Dead Boogie!!
My Mesa Boogie Mark V died on me!!! Grrrr This particular tube was the culprit. She's back singing like James Brown.
The best tubes in the world!
It was a great experience to buy in Sweetwater. I live in Brazil and all the process was made online (of course the item was delivered into an American address). It was perfect! All the tubes were delivered in perfect condition, the schedule time was precise and worked very well. After installation, all the tubes are working fine, exactly as expected and no technician is needed to replace because all the mesa tubes are tested at mesa's hq and certified to allow the amps to do his job as it was built for.
Mesa 5U4GB
Just replaced my old 5U4GB Rectifier tubes and the Rectifier punch is back!
Awesome
I replaced these after I purchased a used Mesa Triple Rec. It came with these installed, so I cant compare brands, but they sound GREAT.
