FWIW, my reference to "low level ringing" was ringing not seperately audible as ringing no matter where you were standing, but was a very low level ringing mixed into the main signal. If I can actually hear a tube ring with out touching it, it goes!
Many folks actually prefer this very low level ringing and find it additive, so I guess my answer to your question is that tube dampers can work but whether you like their effect or not may well depend on what you like.
Personally, on tubes in applications where noise and microphonics can be an issue I use tubes tested for low noise and a simple rubber type rings that only cost a couple of bucks. But then I'm both anal and cheap.
YMMV. I'm sure others will chime in and give you further guidance.
Many folks actually prefer this very low level ringing and find it additive, so I guess my answer to your question is that tube dampers can work but whether you like their effect or not may well depend on what you like.
Personally, on tubes in applications where noise and microphonics can be an issue I use tubes tested for low noise and a simple rubber type rings that only cost a couple of bucks. But then I'm both anal and cheap.
YMMV. I'm sure others will chime in and give you further guidance.