I’ve used the same silicone O-rings as George (but- from McMaster-Carr), for decades. Also agree (from my personal perspective); there’s no such thing as over-damping resonances. I consider anything that adds or subtracts anything, from an original signal, as distortion or coloration. Then again, when I had my shoppe; I catered to all tastes/preferences. This is definitely one of those try-it-and-see-for-yourself situations. iow: EXPERIMENT! https://www.mcmaster.com/silicone-o-rings/high-temperature-o-rings/
Anybody have ant thoughts re using 2 Herbie's tube dampers on 1 tube?
I'm already using Herbie's UltraSonic SS on the 6SN7s in my amp. I'm definitely happy and believe they make a positive difference. I've noticed that in some pictures of a number of tube amps that some folks are using more than one of the "rubber" style dampers on their tubes. Does anyone have any ideas?