Your right dwd, vibration does cause noise. Now how do you fix this problem? Find the source and tighten or replace the parts that are vibrating. Not with a little piece of rubber but repair the vibration. Sights, quivers and all the attachments on a bow will vibrate and cause some noise, you find the source and fix it. The stabilizer can reduce some vibration, but not all. Why depend on reducing vibration noise when, in most cases, it can be eliminated. Shock from release is the biggest culprit in creating noise. I'm sure you know the ones I'm talking about. The guy that shoots and the bow sounds like an old wooden screen door slamming. A 6' stabilizer plugged into a sand pile won't help this.