Tube Ring fits: 2A3, 300B etc.
Golden Dragon Tube Rings offer a substantial upgrade to any valve or tube amplifier, and are without doubt the most important and cost-effective upgrade for your valves.
Golden Dragon Tube Rings deliver improvements to the soundstaging of your amplifier, offer a tighter, more controlled bass response and also aid in the improvement of imaging and three dimensional picture.
Tube Rings reduce the unwanted effects of distortion, microphony and self oscillation from tubes and valves. They are easily attached to the top part of the valve where they prohibit mechanical vibration.
'Anybody with a tube amp, especially an open chassis model should investigate these plain looking little rings immediately. I think you'll be keeping them once you hear the effects. They're now considered essential as far as i'm concerned, and bring new meaning to the term "simply the best"' (Hi-Fi+ Magazine)