Isolation Devices: Any Good Ones?

Surprised no one has mentioned Herbie's Audio Lab. Their Tenderfeet work great, and are one of the real bargains in high end audio. Their tube dampers and other vibration control products also work very well.

tommylion +1 Herbie's has effective products for all areas of music reproduction. I've purchased from them 11 or 12 times and each time the product worked as advertised for me. Collectively I feel the improvement is only topped by a whole new system or a complete room acoustic makeover. 
Steve and Robert are great to work with, prices all our hobbyists can afford and even offered tips for internal parts micro vibration control that eventually I did almost my entire system with at a cost of $5.
A must in my opinion to have your system reach it's full potential.

Same here, but low price rule it out  for many . Can you imagine a Herby review in TAS . 

DIY-solution: http://www.artificialintelligence.fi/hifi_damping_calculator_en.html

I have a  current patent standing here in the USA for the application of bearings either as a resonance enhancement or to over damp and shut down vibrations.

Size and quantity dictate the application and outcome.

The patent applies to footers rods and tubes as used in audio components as well as some acoustic string instruments. Also applied to some cables .Works so well that others have violated this patent at least by shipping their product from over seas to the USA. 

TomD

Tone Acoustics.