Elrog ER300B update

Thomas Mayer share some more insights on the Elrog ER300 tube as well as few of the owners feedbacks. ER300B official data sheet is now finally released the main differences between legendary Western Electric 300B and  Elrog ER300 are the increased plate resistance of 950 Ohms vs. the 700 Ohms of the WE and the reduced amplification factor of 3.3.