Arturia KeyStep 37 mk2 – MIDI Controller and Sequencer with CV/Gate

The Arturia KeyStep 37 mk2 is an advanced MIDI controller and step sequencer that combines a compact form factor with professional-grade control over hardware and software. Whether you're producing in a DAW, sequencing hardware synthesizers, or controlling a modular Eurorack system, this device becomes the creative hub of your setup. Its expressive Slimkey keyboard, powerful arpeggiator, polyphonic sequencer, and full MIDI/CV connectivity allow you to compose, improvise, and perform without limitations.

Product Features

37 Slimkey keys with velocity and aftertouch, 16 arpeggiator modes, polyphonic step sequencer with up to 64 steps, chord and scale modes, Mutate, Spice and Dice functions, 4 mode-aware encoders with MIDI CC assignability, CV/Gate outputs (Pitch, Gate, Mod 1, Mod 2), MIDI DIN In/Out, USB-C, Sync I/O, sustain/expression input, OLED display, and full RGB feedback.

A Creative Control Center for Studio and Stage

This MIDI controller bridges the analog and digital worlds. Create a riff using the arpeggiator, turn it into a sequence, and transform it in real time with the Mutate function. Spice and Dice introduce controlled randomness, generating musical variations while maintaining creative flow.

Four dedicated encoders automatically adapt to the selected mode (Seq, Arp, Chord, or Mutate), giving you instant access to essential parameters. The OLED display ensures clear visual feedback, while LEDs above the keys show sequence progress, active patterns, and scale context at a glance.

The polyphonic step sequencer allows recording up to 64 steps with 8-note polyphony. Chain patterns, overdub parts, automate pitch and modulation, undo changes, and evolve ideas live without breaking tempo. It’s equally powerful for hardware rigs and DAW-based production.

Applications

Perfect for music producers, live performers, and modular synth enthusiasts. Use it as a central MIDI controller in your studio, a sequencer for analog synthesizers, or a compact performance keyboard for mobile setups. Its flexible connectivity makes it suitable for any workflow.

Technical Specifications

• 37 Slimkey keys with velocity and aftertouch
• Polyphonic sequencer: up to 64 steps, 8-note polyphony
• Arpeggiator with 16 modes (including Poly, Walk, Random, Pattern)
• Chord and Scale modes
• 4 encoders with 4 MIDI CC banks (16 assignable controls)
• CV/Gate outputs: Pitch, Gate, Mod 1, Mod 2
• MIDI DIN In/Out
• USB-C MIDI
• Sync In/Out 3.5 mm
• Sustain/Expression input
• OLED display
• USB powered

Build and Design

The compact and durable construction is designed for intensive studio use and portability. The Slimkey keybed provides comfortable playability despite its small footprint. High-quality encoders and touch strips for pitch and modulation ensure precise performance control.

What’s Included

• Arturia KeyStep 37 mk2
• USB-C cable
• Manufacturer documentation

Why Choose This Model?

If you’re looking for a compact MIDI controller with powerful sequencing capabilities and full integration of analog and digital gear, the Arturia KeyStep 37 mk2 is an outstanding choice. It’s a creative tool designed to inspire experimentation and streamline your workflow in real time.