The Arturia KeyStep Pro Black is a professional 37-key sequencing controller that seamlessly bridges hardware synthesizers, modular systems and software instruments. Combining a powerful four-track polyphonic sequencer, dedicated drum sequencing, advanced arpeggiation and extensive CV, Gate and MIDI connectivity, it serves as the central command station for modern studio and live performance setups. Featuring velocity- and aftertouch-sensitive Slimkeys, a bright OLED display, intuitive controls and comprehensive synchronization options, the KeyStep Pro Black empowers musicians to create, control and perform complex productions entirely from a single compact controller. Key features 37-note Slimkey keyboard with velocity and aftertouch Four independent polyphonic sequencer tracks Dedicated 24-part drum sequencer 16 step buttons with up to 64 steps per sequence Up to 16-note polyphony per step Advanced arpeggiator with seven modes OLED display with intuitive workflow 4 × CV/Gate/Mod outputs plus 8 drum gate outputs MIDI In, 2 × MIDI Out, USB and Clock Sync I/O Controller mode with assignable encoders Overview Product Type Sequencing Controller Keyboard Keyboard 37 Velocity- and Aftertouch-Sensitive Slimkeys Sequencer Tracks 4 Polyphonic Tracks + 1 Drum Track Maximum Polyphony 16 Notes per Step Step Capacity 16 Steps per Pattern, Expandable to 64 Steps Arpeggiator 7 Modes with up to 5 Octaves CV Outputs 4 × CV, Gate & Mod + 8 Drum Gate Outputs Connectivity USB, MIDI In, 2 × MIDI Out, Clock Sync In/Out, Sustain Pedal Display OLED Dimensions 589 × 208 × 38 mm Weight 2.7 kg Colour Black Included Content Arturia KeyStep Pro Black Power supply USB cable Registration card Quick Start guide Ableton Live Lite Analog Lab Intro Creative Tools Sequence up to four instruments simultaneously from a single controller Create expressive melodies, chords and evolving patterns with the polyphonic sequencer Program complete drum performances using the dedicated 24-part drum sequencer Control modular systems, Eurorack synthesizers and vintage hardware via extensive CV and Gate outputs Synchronise seamlessly with DAWs, drum machines and external MIDI equipment Perform dynamic arpeggios with multiple playback modes and real-time controls Record and automate controller movements using assignable rotary encoders Ideal For Hardware synthesizer enthusiasts Modular and Eurorack users Electronic music producers Live performers Hybrid DAW and hardware studios Film and game composers Sound designers Professional production environments