All I can say is, try it for yourself and see. I have used them on and off in my equipment, and there were occasions where I thought they made a nice improvement in focus and clarity on some tubes, but on other equipment it took the "life" out of the system. The dampers will be tube and equipment dependant.
Do tube dampers improve sound?
I recently purchased a tube pre-amp and several NOS 6922 tubes (EH, JJ Tesla, and Philips). Should I consider buying tube dampers? Do they really help the sound? Thanks