Arturia KeyStep 37 mk2 37-Key Controller & Sequencer - White

Expanding the proven KeyStep platform with five additional keys, the Arturia KeyStep 37 mk2 delivers a 37-note format that improves playability without sacrificing the compact footprint producers rely on. Built on the familiar KeyStep mk2 architecture, it retains the hands-on sequencer, arpeggiator, Slimkey action and hardware connectivity that made the 32-key version a studio staple. The added key range makes melodic phrasing, basslines and two-handed ideas more natural while maintaining the portability that defines the series. For mobile producers and DAW users who want more space to play without moving to a full-size controller, this KeyStep is an ideal middle ground.

Expanded playability in a compact format

The velocity-sensitive 37-note Slimkey keyboard with aftertouch offers expressive control in a streamlined chassis that fits easily into desktop and travel setups. Those five extra keys provide meaningful flexibility when performing bass and lead parts, reducing the need for constant octave switching compared to the 32-key model. Capacitive pitch and modulation touch strips remain front and center for intuitive real-time shaping. Chord and Scale modes are built in, allowing users to explore harmonies and lock performances to key with minimal setup.

Proven sequencing and arpeggiator tools

KeyStep 37 mk2 carries forward the polyphonic step sequencer and 16-mode arpeggiator that are core to the KeyStep experience. The sequencer supports up to 64 steps with 8-voice polyphony, while pattern chaining keeps ideas moving without breaking workflow. Creative tools like Mutate, Spice and Dice enable live variation, giving users new takes on riffs and sequences without starting from scratch. This sequencing engine continues to serve as a flexible ideas machine for both hardware rigs and DAW-based production.

Hands-on control without menu diving

Four dedicated encoders provide direct access to arpeggiator, sequencer and Mutate parameters, supporting a streamlined performance workflow. These encoders are also freely assignable to custom MIDI CC and CV/Gate destinations, allowing deeper integration into personalized setups. The OLED display, clickable encoder and RGB LED feedback provide clear visual reference during editing. With mode-aware controls and a MIDI CC button offering four banks—unlocking up to 16 assignable MIDI CCs—the interface remains fast and performance-focused.

Hardware connectivity that bridges any setup

Designed as a bridge between ultracompact and full-size controllers, KeyStep 37 mk2 integrates easily into both software and hardware environments. USB-C MIDI provides class-compliant connectivity and bus power, while full-size MIDI DIN In/Out and 3.5 mm Sync I/O support traditional gear. Four CV/Gate outputs—Pitch, Gate, Mod 1 and Mod 2—can be assigned to velocity, aftertouch, mod wheel and more for expressive modular control. A sustain or expression pedal input further expands performance options without increasing footprint.

Portable, practical and ready to create

Despite the expanded 37-key range, the controller maintains the compact design that makes KeyStep a favorite for mobile production and tight studio spaces. Low-power operation ensures compatibility with laptops and tablets (camera connection kit required for iPad), while a power switch and Kensington lock slot support practical everyday use. Included software—Analog Lab Intro with over 500 sounds and Ableton Live Lite—lets users start creating immediately. For existing KeyStep devotees or producers seeking more range without moving to a larger keyboard, KeyStep 37 mk2 delivers expanded playability in the same trusted platform.