Big E has posted a review of the Wave Kinetics A10-U8 Component Control System ($700/set of four) at Hi-fi Unlimited. His conclusions:
Using the Wave Kinetics A10-U8 is like using spikes without their inherent sonic signature, or vibrapod like devices without their bloated bass type ill effects. I found them to be very sonically balanced examples of high tech, yet easy to use vibrational control devices, if admittedly highly priced too. However, as they say in high end audio circles, chasing for the last 2Hz of lower bass extension, the last ounce of "air" or the last 5% of performance envelope is never a cheap affair!
You can read the full review here.