"This technology has existed for decades, although maybe not under this new brand name. A lot of musicians started using a home-theater device years ago called the "Buttkicker" for live performance -- it was originally designed to be placed under couch cushions as part of a "feel it rather than hear it" home theater system, but a lot of drummers and bass players were quick to adapt it to drum thrones -- and as a platform to stand on -- in order to really feel the kick drum or the bass without having to crank monitors or IEMs for less feedback or quieter stage monitoring. Seems like the "ThroneX" is just putting a new name and hefty pricetag on a not-so-new idea."