SUPERNATURAL PIANO UPGRADE FOR RD-700GX Just when you thought the best couldn’t get better, the top-selling RD-700GX gets a SuperNATURAL Piano upgrade. Derived from Roland’s award-winning V-Piano modeling technology and 88-key stereo multisampling piano technology, the RD-700GX SuperNATURAL Piano Kit adds three dimensions of seamless piano perfection to the RD-700GX. Comprising a dedicated expansion board (SuperNATURAL Piano sound engine) and a USB memory key (OS update), the kit is a dream for live performers who want the utmost in authentic playability, and for studio musicians who desire the highest-quality piano sounds. 17 new SuperNATURAL Pianos customized for the RD-700GX Seamless response from note to note across the keyboard Seamless tonal transition from low-to-high velocity Seamless note decay User-installable upgrade via expansion board and USB memory key