crowson does make a crossover with their stereo preamp (which allows stereo vibration), and an amp
but like i said. its more expensive.
hopefully the review works out well. i dont think it will blow the buttkickers out of the water during average flat lfe, but if you listen to detailed lfe like in some video games and movies, i think you can easily tell the difference.
i remember reading one review that said "i like the up and down motion but my favorite has to be the sliding motion" just by some random owner. It was pretty funny cause i knew exactly what he was talking about, cause during certain motions it feels almost like it moves front to back, but the thing only goes up and down.