The TubeDamper is a damping ring for preamp and driver tubes. The vibrations are effectively damped at the glass envelope of the tube with the proven Sicomin material. There is a clear improvement in the contour, dynamics, clarity and stability of the sound impression. Anode current and temperature of the tubes remains stabile with the TubeDamper, which means that the service life of the tubes are not negatively affected. The TubeDamper can be used on all low-level signal tubes with a diameter of 20 mm, for example, ECC81, ECC82, ECC83 or ECC88. The TubeDamper is not suitable for power amp tubes such as EL84.