Herbie's vs. Hal-O's, Tube Dampers whats good?

Herbie's Audio Lab is a manufacturer, HAL-O is a model they make. So they're all good.

I have tried every model of ring-and-bumper-type tube damper Steve Herbelin makes or used to make and they all work very well indeed. Sadly, I have not found a cheaper Herbie's model that outperforms a more expensive one. The better ones really do work better IME.

+1 for Herbie's product

Ed

Good stuff and nice couple to deal with too. I use Hal-O's in my tube stuff.

What audible effect do you get from tube dampers?
Art

I use Pearl Tube Coolers. They give both a cooling and damping effect. Reasonably priced, easy to use, but they can break fairly easily. I tried Golden Dragon dampers and was very disappointed. Kept falling off the shoulders of my 300B tubes.

Art, dampers are purported to lessen some noise- a lot of tubes, particularly smaller signal tubes, are prone to microphonics- they make noise with vibration.