Thomas Mayer custom Elrog TM300 tube is supplied with different filament structure and different grid structure. These are extremely difficult to assemble and can only be produced in limited quantities. They are therefore reserved for the amplifiers from Tomas Mayer.
Also, the Elrog Molybdenum Plate ER300B-Mo tube can be ordered now. All three current versions have a different sound, and the new versions improve the sound compared to the standard ER300B. The TM300B uses a unique approach in its internal construction. But all of them have the same quality for which Elrog tubes are known, just enhanced in features to achieve even better tone color and resolution.
