The MV-30 is a proto-groovebox with integrated 16-track sequencer (max. 8 tracks internal) and the ability to assign specific short sequences to the keys. The MV-30 has full edit like the D-70 which goes beyond the patch editing of the Yamaha RM1x.  It can also use SN-U110 expansion cards. This new bank of patches covers analog emulations great for synthwave tracks and sample assignments for 10 Roland expansion cards, Pipe Organ & Harpsichord, Ethnic, Orchestral Strings, Electric Guitar, Synthesizer, Sound Effects, Super Strings, Super Ac Guitar and the two Studio M cards. It's patch banks need to be loaded by floppy disks with are in Roland's propriety. So the MV-30 will be delivered as physical floppy disk for your MV-30.  The price includes shipping.