Arturia KeyStep 37 mk2 MIDI Controller and Sequencer

The Arturia KeyStep 37 mk2 is a compact yet highly capable MIDI controller and sequencer crafted for today’s music creators. Offering expressive playability, advanced sequencing features, and extensive connectivity options, it integrates effortlessly into studio, modular, and live performance setups.

Ideal for controlling analogue synthesizers, modular systems, or software instruments, the KeyStep 37 mk2 inspires fluid creativity with its generative tools and hands-on controls. Its refined 37-note Slimkey keyboard combines feel with precision, making it an essential ideas generator as well as a controller.

Main Features

• 37-note Slimkey keyboard with velocity sensitivity and aftertouch
• Capacitive touch strips for pitch bend and modulation control
• Polyphonic step sequencer capable of up to 64 steps and 8-voice polyphony
• 16-mode arpeggiator featuring generative pattern styles
• Live variation tools: Mutate, Spice, and Dice
• Convenient Chord and Scale modes for instant harmonic support
• OLED display with clickable encoder and RGB LED feedback
• Four assignable rotary encoders plus dedicated Control button
• Mode-aware hands-on editing for sequencer, arpeggiator, chord, and mutate functions
• MIDI CC button with four banks offering 16 assignable MIDI CCs
• Four CV/gate outputs supporting Pitch, Gate, Mod 1, and Mod 2
• Full-size MIDI DIN In and Out, plus 3.5 mm Sync In and Out
• Sustain and expression pedal input via TRS jack
• USB Type-C MIDI with bus power and class-compliant compatibility
• Power switch and Kensington lock slot for security
• Low power consumption with iPad compatibility using Camera Connection Kit

Expressive Playability

The 37-note Slimkey keyboard boasts velocity sensitivity and aftertouch, combining expressive play with a compact design. Capacitive pitch bend and modulation strips provide smooth, real-time control. Use Chord and Scale modes to explore harmonies effortlessly and fuel your musical creativity.

A Powerful Ideas Machine

At its core, the KeyStep 37 mk2 features a flexible polyphonic step sequencer and an advanced arpeggiator. Build and chain patterns quickly, then transform them live using innovative tools like Mutate, Spice, and Dice. These features introduce evolving variations that keep your ideas fresh without disrupting your flow.

Turn arpeggios into sequences, adjust octave range, note length, and rests, overdub notes, and capture pitch bend and modulation movements. Every performance becomes a dynamic, evolving journey.

Hands-On Control with Instant Access

Four dedicated rotary encoders provide immediate control over sequencer, arpeggiator, and generative effect parameters. These mode-aware encoders can also be freely assigned to MIDI CC or CV destinations, ensuring fast, seamless manipulation with minimal setup.

Extensive Hardware and Software Connectivity

Designed to integrate with virtually any setup, the KeyStep 37 mk2 offers USB-C MIDI, full-sized MIDI DIN ports, and comprehensive CV/gate outputs. The four CV outputs are configurable and support pitch, gate, modulation, velocity, and aftertouch assignments.

Sync inputs/outputs and pedal support ensure flawless timing and expression control. Class-compliant USB operation keeps it compatible with computers, hardware rigs, and mobile devices alike.

Included Software

• Analog Lab Intro featuring over 500 sounds
• Ableton Live Lite

Box Contents

• KeyStep 37 mk2 controller
• USB A to USB C cable

Frequently Asked Questions