Our vibration is multiplanar with the primary vibration being in the vertical direction. We have placed our primary stabilizing arches at each corner at 45 degrees to limit our side-to-side and front to back destabilization rather than the opposing motors most other companies have gone with. We use a stiff mechanical suspension system much as you see in a one ton truck vs. a half ton.
We have designed a system in which you can mechanically change the weight of the eccentrics to give you a different amplitude for different users for example a light set up for seniors with hi and lo settings, a medium set up for plyometrics and a heavy set up for athletes lifting. With this approach we can dial in amplitudes and maintain targeted muscle fibers. The standard hertz setting on our platforms is adjustable from 20-60hz. Hertz is the speed of the machine. The amplitude is the vertical displacement of the platform. We have low and high amplitude setting on our platforms. A more meaningful measure would be g force with 200 pounds load on the platform, which would require an accelerometer and standardized testing. The whole body vibration industry does not have consistent "g" force rating system. Each manufacturer has come up with their own standard; usually with the platform unloaded. The only two ways of changing this centripetal force in a non center pivot system is by changing mass or changing velocity (frequency). We have found if you change velocity you are getting into a different muscle fiber which is usually not what you are tying to do.
Our standard single engine platforms have a g force of approximately 1.8g on the low amplitude setting and approx. 3.2 g on the high amplitude setting with a 200 lb person on the plate. This would be roughly comparable to what most of the other industrial manufacturers would claim, however the difference comes when the plate is under load or when you want to change the factory settings for different types of user groups. e.g. seniors versus competitive athletes. You usually have very different goals for these groups and the same amplitudes and frequencies for each usually would not make sense.
The other claim that can be very misleading is the direction of the oscillation. Single plane versus multiplanar. Many of the center pivot machines on the market claim a single plane vibration is what they have. Whether we would agree with their claim or not we would say as a rule whether working with seniors or competitive athletes it is important to introduce a multiplanar perturbation into their routine to cause a systemic response which begins allowing them to cope with a multiplaner world.