Tube dampers/coolers effect on preamp sound?

Has anyone heard a change in sound, good or bad, when using any kind of device that damps a tubes glass bottle in a preamp ?

rmcfee02-27-2013 3:55pm

mofimadness Details Discussions Posts This discussion Message User 4,982 posts 02-27-2013 at 10:36pm Copy Comment URL Report Comment Edit Delete I use Herbie's Tube Dampers on all of my tube gear. I wouldn't say it's a profound difference, but well worth the asking price. It's a pretty cheap tweek that works well...IMHO.
rmcfee OP Details Discussions Posts This discussion Message User 26 posts 02-28-2013 at 01:11am Copy Comment URL Report Comment Edit Delete Thanks MOFI. Can you describe the improvement at all?
lowrider57 Details Discussions Posts This discussion Message User 5,417 posts 02-28-2013 at 04:48am Copy Comment URL Report Comment Edit Delete I also use Herbie's Tube Dampers in my preamp (4 tubes) and the result was a tighter bass.
rmcfee OP Details Discussions Posts This discussion Message User 26 posts 02-28-2013 at 02:02pm Copy Comment URL Report Comment Edit Delete I have heard one person say that they heard a reduction in openness and soundstage when using a damper. Any opinions of this?