Compact 32-key MIDI controller with dynamic pads. The Roland A-300 Pro USB MIDI Controller Keyboard is a lightweight and portable keyboard controller jam-packed with useful features and controls. The Roland A-300 Pro features 32 velocity-sensitive keys for natural and fluid playability. It also boasts a massive amount of hands on control. Knobs, sliders, buttons and dynamic pads make up just some of the 45 assignable controls. From studio to the stage, the A-300 is perfect for everything from music production to live performances. The A-300 Pro features Roland's custom FPT (Fast Processing Technology) providing high-speed and low latency MIDI transmission. This is highly useful when it comes to music production, reacting in near real-time for the feel of a real instrument. Additionally, the A-300 comes complete with Ableton Live Lite music software to get you started straight out of the box.