VELOCITY-SENSITIVE 61 KEYS WITH CHANNEL AFTERTOUCH, INSPIRING FEEL AND RESPONSE FOR SERIOUS PLAYERS, 45 ASSIGNABLE CONTROLS: KNOBS, SLIDERS, BUTTONS, TRANSPORT AND MORE, 8 DYNAMIC PADS FOR FINGER DRUMMING AND MIDI TRIGGERING, SURE-GRIP PITCH BEND/MODULATION STICK, EXPAND PLAYABILITY WITH SUSTAIN AND EXPRESSION PEDALS (AVAILABLE SEPARATELY), USB BUS POWERED - NO AC ADAPTOR REQUIRED (AC ADAPTOR IS AN OPTIONAL), DURABLE ROLAND-QUALITY MANUFACTURING AND CRAFTSMANSHIP, BUNDLED WITH THE CAKEWALK PRODUCTION PLUS PACK INCLUDING THREE INCREDIBLE INSTRUMENTS AND PRODUCTION SOFTWARE, WORKS WITH ANY DAW ON MAC OR PC, SUPPORTS WINDOWS 7 AND MAC OS X SNOW LEOPARD