Best tube dampers that you have used

I've had very good success with Mapleshade Halo tube dampers. https://shop.mapleshadestore.com/Tube-Gear-Upgrades/products/316/. The Halo tube dampers come with grounding straps. As one of my audiophile friends said, "...what a steal at such a great price..." I put the Halos on my tubes after hearing the SQ difference in his system. I just got two more Halos because my new preamp has 4 tubes instead of the 2 like in my previous preamp.

The king of the meat family for damping tubes of course is Hormel Spam, rolled into little rings, not too hard, not too soft. Just right. And the best part is when the meat is nice and done it makes a great Scooby snack.

I have tried  pearl coolers, and ARC silicon rings on both power and small signal tubes. I always end up removing them after listening for a short while. They seem to kill the life and musicality of my tube equipment. Never tried Herbies, as they are not cheap. They seem to get good comments around the web, so maybe they would work better. I would not use them unless I had some microphonics from the tube gear that I could not deal with. I am happy with the sound I am currently achieving in my room, so I won't F with a good thing. I have  also found the same life robbing effect when  using spike feet on my amps or preamp, crossover, etc. Think spongy rubber feet on my amps make an improvement, spikes are detremental. Spikes do improve my speakers though.

mg16
I would not use them unless I had some microphonics from the tube gear that I could not deal with. I am happy with the sound I am currently achieving in my room, so I won’t F with a good thing.

>>>The interesting thing about the Herbies dampers is they only barely touch the tube glass at all, just enough, the way they’re designed. The other interesting thing is they work even on tubes advertised as very low microphonic. I.e., all tubes are microphonic to some degree. All that’s required is knowing where the getter is.