Not your ordinary controller. The roland a 49 midi controller keyboard is a compact midi keyboard with unique features that take your production and performance to the next level. The roland a 49 features velocity sensitive keys for fluid and natural playability. The a 49 also includes the d beamm which is exclusive to roland allowing you to control and manipulate sounds by hand movements tracked by an infrared beam of light. The a 49 midi keyboard also features led indicators for visual feedback and a function button for accessing additional settings. The keyboard is powered via usb eliminating the need for a power supply. The lightweight design makes it highly portable perfect for musicians on the go or at home. It also comes complete with ableton live lite to get you started making music straight out of the box.