your Sota is built with a spring isolation suspension system built in. One of the best. So it is not susceptable to external vibrations as would a ridgid mount turntable. If your floor is anything but a concrete slab, you might have issues with vibrations from your foot steps causing vibration in your turntable, and therefore distortion in your cartridge. also, if you play loud, bass note vibration can cause feedback. Your cartridge is basically a microphone, picking up vibration whether it is on the record or in the air. The Sota is designed to minimize those effects. A ridgid table has to sit on something that absorbs those vibrations from the floor before they get to the table.
