Mesa Boogie 5U4GB Rectifier Tube (Individual) Instru turn counterclockwise to soften the

turn counterclockwise to soften the highs

with classical yet modern specifications

Vintage tone that pushes your amp's natural drive

the D6 is an excellent choice for miking instruments requiring extended low frequency reproduction such as kick drum

Dedicated editor software available

Mesa Boogie 5U4GB Rectifier Tube (Individual) Instru turn counterclockwise to soften theThe MESA 5U4GB Rectifier Tube is our very best overall 5U4 and our rectifier tube of choice in the production of all new MESA amps featuring this tube. This tube produces a "traditional vintage sag" with the most elastic and compressed feel of the two 5U4's that we offer. Amazing feel and exceptional overall quality make this our factory favorite. Based on classic 1950s technology, the 5U4GB is a vastly improved 5U4 design that is extremely reliable