My U1-PX Has the footers that came with the speakers and stand on oriental rugs. I tried those Iacoustic vibration control systems, and found that they took a little bit away from the music and so I returned them.
I’d try them. I installed AV Roomservice EVPs under my Sound Labs and liked the effect. I suspect it has more to do with reducing sympathetic vibrations of the floor than it does with the speakers themselves.