Arturia KeyStep Pro – 37‑Key MIDI Controller & 4‑Track Sequencer

The Arturia KeyStep Pro takes the beloved KeyStep formula to new heights, combining a 37‑note slim‑key keyboard with a powerful 4‑track sequencer and advanced performance controls. Designed for producers, live performers, and modular enthusiasts, it offers deep creative flexibility with polyphonic sequencing, polyrhythms, real‑time recording, and extensive CV, MIDI, and USB connectivity. Whether controlling hardware synths, modular rigs, or DAWs, the KeyStep Pro is the ultimate all‑in‑one sequencing and performance hub.

Key Features

• 37‑key keyboard: Slim keys with velocity and aftertouch for expressive play
• 4 independent sequencer tracks: Each with up to 64 steps and real‑time or step input
• Drum sequencer: 24‑part drum sequencing with polyrhythmic capabilities
• Advanced creative tools: Scale quantization, arpeggiator, and probability functions for evolving patterns
• Deep connectivity: Dual MIDI outputs, CV/Gate outputs, USB, and sync options for modular and DAW setups
• Performance‑ready features: Metronome with built‑in speaker and line output for timing and live use

Customer Benefits

The KeyStep Pro provides unmatched sequencing power in a compact, intuitive design. It bridges the gap between software and hardware, making it easy to manage complex setups while inspiring new musical ideas. Perfect for studio production, live performance, and hybrid workflows.

Quick Specs

• Keyboard: 37 slim keys with velocity and aftertouch
• Sequencer: 4 melodic tracks (up to 64 steps each) + 24‑part drum sequencer
• Performance tools: Arpeggiator, real‑time and step input, probability, scale quantization
• Connectivity: 2× MIDI Out, 1× MIDI In (5‑pin DIN), USB, CV/Gate/Mod outputs
• Metronome: Built‑in speaker and dedicated line output
• Dimensions: 58.9 × 20.9 × 4.5 cm
• Weight: 2.7 kg

What’s in the Box

• Arturia KeyStep Pro
• USB cable
• Power supply
• MIDI adapters
• User manual

Use Cases / Ideal For

Perfect for live performers, electronic musicians, and modular synth users who need a versatile sequencer and controller for complex setups and dynamic performances.

Pros & Cons

✅ Pros:

• Four fully independent sequencer tracks with advanced creative tools
• Extensive connectivity for hardware, modular, and DAWs
• Compact and intuitive design for studio and live use

⚠️ Cons:

• Compact keybed may not suit players preferring full‑size keys

The Arturia KeyStep Pro is a powerful sequencing and performance hub, bridging software and hardware for musicians who demand versatility and control. Available now at Soundium.