For those who are unfamiliar, the Seismion Reactio active platform looks like this:
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Rather plain to be sure, but the no-frills look is one of the reasons the Reactio sells for less than other active platforms. On the other hand, it does cost more than the footers many Extreme owners use. Reactio's vibration sensing and compensation are reportedly extremely fast and work over a very wide frequency range. There are few online reviews but in a couple of comparative reports, Reactio came out on top. It would be most interesting to hear from Extreme owners who've tried one under their server. Anyone ready to share?