Everything should vibrate in a right way. You do tuning and fine tuning. I wouldn't even think about putting that stuff on tubes. Yeah, you need the right tubes and work on finding the best stand for each piece of the equipment, starting with the source. A lot of work and a lot of critical listening.
Tube vibration control
For a while there, it seemed that many people used a vibration suppressor for tubes, and many manufacturers offered a version. Mapleshade had an elaborate all metal tube "jacket, complete with grounding wires that came off of it. More common were the rubber rings that would fit tightly over the tubes. I used to see them a lot - now, when I peruse members systems on this site and other sites, I do not see them as often. Did time teach us that they are not a necessary as we seemed to once think? Did we learn that they caused harm - concentrated heat, for example, and shortened tube life?
Just curious, as I have all-tube electronics, and wonder if I am neglecting something that would give them a little boost in performance.
Thanks,
David