Tvad, fwiw, I don`t think that Herbies stuff is sorbothane. I pulled this from his web site.
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What it is: Herbie's isolation materials are proprietary silicone-based vinyl elastomers with varying compliance and firmness qualities. The materials will absorb vibration with very little pressure applied. As weight load increases, the materials become increasingly resistant to compression. Unlike Sorbothane, Vibrapods, Isonodes, Clouds, and other squishy isolation materials, these compliant, non-vulcanized compounds are not dependent on a precise weight load to be most effective. They are equally effective under a wide range of weight and have no inherent resonance or "coloration." Invented and formulated solely for audio and video applications, these proprietary materials are unsurpassed in their ability to absorb microphonic vibrations and reduce audio distortion. Materials are smudge-free and residue-free, with excellent dielectric (insulating) properties.
Our new SuperSonic fluorocarbons are proprietary composites developed for absolute sonic neutrality and microphonics-absorbing ability.
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What it is: Herbie's isolation materials are proprietary silicone-based vinyl elastomers with varying compliance and firmness qualities. The materials will absorb vibration with very little pressure applied. As weight load increases, the materials become increasingly resistant to compression. Unlike Sorbothane, Vibrapods, Isonodes, Clouds, and other squishy isolation materials, these compliant, non-vulcanized compounds are not dependent on a precise weight load to be most effective. They are equally effective under a wide range of weight and have no inherent resonance or "coloration." Invented and formulated solely for audio and video applications, these proprietary materials are unsurpassed in their ability to absorb microphonic vibrations and reduce audio distortion. Materials are smudge-free and residue-free, with excellent dielectric (insulating) properties.
Our new SuperSonic fluorocarbons are proprietary composites developed for absolute sonic neutrality and microphonics-absorbing ability.