Arturia KeyLab mk3 is a universal MIDI controller designed for integration with software and hardware instruments, featuring a velocity-sensitive semi-weighted keybed available in 49- and 61-key configurations, touch-sensitive pads, encoders, and faders for hands-on control, and a 3.5-inch full-color display for real-time feedback and navigation. It is compatible with major DAWs, integrates with major platforms, has customizable MIDI mappings, built-in creative tools such as arpeggiator, chord, and scale modes, USB-C connectivity for power and MIDI, a 5-pin MIDI output for external gear, and includes software such as Analog Lab Pro, Ableton Live Lite, and additional instruments and effects for music production and performance.