Mapleshade brass tubedampers

Ease of use? You jest. I broke two Teles with these things. Maybe others can comment on their effectiveness. Mine are sitting in a drawer. But then I'm not real sure I'm hearing benefits from any tube dampers (and I've tried a bunch), so keep that in mind :-) Good luck, Dave

I have read that metal dampers can actually cause tubes to retain too much heat. I've had good luck with Herbie's Hal-o dampers, which are cheap and not dangerous to your tubes' life expectancies (either temperature-wise or hardness-wise).

Which reminds me, one of my get round to its was to order some high temp o-rings (tube dampers without the audiophile mark up) from McMaster-Carr. Anybody gone to the trouble to figure out what size o-ring to buy for the common tube types?