09-20-14: Geoffkait
Quick interrupt, but doesn't anyone use Herbies tube dampers on their 6SN7 tubes? I am pretty sure there would put be so much bickering about differences in tube types if everyone used Herbies dampers. I am using them on '52 Sylvania 6SN7GTs (Bad Boys) and '42 Tung Sol 5U4G coke bottle rectifier tube.
I did in a pre-amp application and found them beneficial.....