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KeyStep mk2

Controller & sequencer

KeyStep mk2 is the ultimate compact controller & sequencer for hybrid setups. With a 32-note Slimkey keyboard, generative sequencing tools and deep connectivity via CV/Gate, MIDI DIN, and USB-C - spark ideas in your DAW, pilot any synth or patch modular without breaking your flow.

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KeyStep mk2

Step into
your next idea

KeyStep mk2 is more than keys. It’s a sequencer, arpeggiator, and musical nerve-centre that bridges hardware and software so you can compose, jam, and perform anywhere your ideas take you.

Hands-on control

Play, arpeggiate, and sequence ideas the moment they strike. KeyStep mk2’s OLED display, clickable encoder, and full RGB feedback also make every edit fast and intuitive.

Generative creativity

Capture a riff, turn it into a sequence, then transform it with mutation tools and real-time performance control. Keep inspiration flowing with features that invite constant discovery and movement.

Universal connectivity

Command modular, vintage, and modern gear alongside your DAW. CV/Gate, MIDI DIN, Sync I/O, and USB-C keep every piece of your setup talking, and in time.

Control & sequence
anything

From sketching a melody to shaping full arrangements, KeyStep mk2 keeps ideas on the move. Every touch, twist, and note responds instantly, letting you build, evolve, and perform without interruption.

Slimkey keybed: 32 expressive keys with velocity & aftertouch.

16 mode arpeggiator: From simple cycles to creative melodic textures.

Pitch & mod touch strips: Smooth bends and modulation plus live Gate/Spice/Dice sliders.

OLED display: Clear, immediate parameter feedback and editing.

Mutate, Spice & Dice: Instant, musical variations and controlled randomness.

Assignable CV/Gate outputs: Four outputs for pitch, gate, and modulation to control modular gear.

Polyphonic step sequencer: Record or program up to 64 steps of 8-note polyphony.

Chord & Scale modes: Lock to a key and trigger full chords for harmonic flow.

Full-size MIDI DIN + Sync I/O: Seamless DAW, hardware, and Eurorack integration.

Inspiration
on command

Your workflow’s best friend, KeyStep mk2 plays like an instrument, edits like a groovebox, and invents like a modern synth. Trigger and edit patterns on the fly with an advanced sequencer and arpeggiator. Overdub notes, record automation in real time, transform grooves mid-flow, and perform without breaking tempo.

3 modes
total control

KeyStep mk2’s modes work in synergy to keep ideas evolving - capture a riff, turn it into a sequence, mutate it, and keep the momentum alive.

Sequencer mode

Create and play back polyphonic patterns. Chain, overdub, undo, mutate, automate bends/mod, and transform sequences live - great for hardware rigs and sketching ideas in your DAW.

Arpeggiator mode

Choose from 16 arp types including Poly, Walk, Pattern, and Random. Phrase Arp remaps your sequence to played notes for immediate, musical mutations.

Controller mode

With MIDI, USB, and CV, KeyStep mk2 handles it all. Use it as a central controller to sequence gear, input chords, or modulate CV synths from one compact keyboard.

Every port
every possibility

KeyStep mk2 is your universal creative interface. Patch into modular systems, control synths from past and present, and synchronize your drum machines. Ready to command any setup - live, in the studio, or on the move.

Digital & analog, unified

Full-size MIDI DIN I/O for classic hardware, USB-C for DAWs and soft-synths, and assignable CV/Gate for modular.

CV for modular minds

Four CV/Gate outs mappable to velocity, aftertouch, mod-wheel, and more. Patch lines, open filters, ping envelopes: expressive control.

Sync, sustain & convert

3.5 mm Sync In/Out for vintage gear, TRS sustain/expression input for feel, plus MIDI In → CV to play modular from external keys.

A closer
look

Explore the controls, layout, and creative features of KeyStep mk2 in detail, from its premium keybed to performance features.

Overview

KeyStep mk2

1

32-note Slimkey keyboard

Arturia-designed keybed with velocity & aftertouch.

2

OLED display + push-encoder

Clear screen with data knob and Back button for instant setup.

3

Pattern chaining & Seq/Arp

Build full songs or transform sequences into arpeggios on the fly.

4

Mutate button

One-touch melodic mutation and phrase generation.

5

Chord & Scale modes

Record chords or lock to scales for effortless in-key playing.

6

Transport + Tap

Real-time, step, or un-quantized recording.

7

Performance strips & live sliders

Capacitive Pitch & Mod strips, plus Gate Length and Spice/Dice sliders for expressive tweaks.

8

Shift + Octave -/+

Access secondary functions and transpose the keyboard up or down quickly.

Overview

KeyStep mk2

1

32-note Slimkey keyboard

Arturia-designed keybed with velocity & aftertouch.

2

OLED display + push-encoder

Clear screen with data knob and Back button for instant setup.

3

Pattern chaining & Seq/Arp

Build full songs or transform sequences into arpeggios on the fly.

4

Mutate button

One-touch melodic mutation and phrase generation.

5

Chord & Scale modes

Record chords or lock to scales for effortless in-key playing.

6

Transport + Tap

Real-time, step, or un-quantized recording.

7

Performance strips & live sliders

Capacitive Pitch & Mod strips, plus Gate Length and Spice/Dice sliders for expressive tweaks.

8

Shift + Octave -/+

Access secondary functions and transpose the keyboard up or down quickly.

Overview

KeyStep mk2

1

32-note Slimkey keyboard

Arturia-designed keybed with velocity & aftertouch.

2

OLED display + push-encoder

Clear screen with data knob and Back button for instant setup.

3

Pattern chaining & Seq/Arp

Build full songs or transform sequences into arpeggios on the fly.

4

Mutate button

One-touch melodic mutation and phrase generation.

5

Chord & Scale modes

Record chords or lock to scales for effortless in-key playing.

6

Transport + Tap

Real-time, step, or un-quantized recording.

7

Performance strips & live sliders

Capacitive Pitch & Mod strips, plus Gate Length and Spice/Dice sliders for expressive tweaks.

8

Shift + Octave -/+

Access secondary functions and transpose the keyboard up or down quickly.

1

2

3

4

5

6

7

8

Overview

KeyStep mk2

1

CV/GATE outputs

Pitch, Gate, Mod 1, Mod 2 — assignable to velocity, aftertouch, wheel & more.

2

Sustain / Expression jack

Connect a sustain pedal, footswitch, or expression control.

3

Sync I/O

3.5 mm clock in/out for sending or receiving sync with start/stop messages.

4

MIDI DIN In/Out

Full-size 5-pin MIDI ports to connect with any DAW or hardware MIDI gear.

5

USB-C

Class-compliant bus power and USB MIDI connection.

6

Power switch

Sturdy on/off hardware control.

Overview

KeyStep mk2

1

CV/GATE outputs

Pitch, Gate, Mod 1, Mod 2 — assignable to velocity, aftertouch, wheel & more.

2

Sustain / Expression jack

Connect a sustain pedal, footswitch, or expression control.

3

Sync I/O

3.5 mm clock in/out for sending or receiving sync with start/stop messages.

4

MIDI DIN In/Out

Full-size 5-pin MIDI ports to connect with any DAW or hardware MIDI gear.

5

USB-C

Class-compliant bus power and USB MIDI connection.

6

Power switch

Sturdy on/off hardware control.

Overview

KeyStep mk2

1

CV/GATE outputs

Pitch, Gate, Mod 1, Mod 2 — assignable to velocity, aftertouch, wheel & more.

2

Sustain / Expression jack

Connect a sustain pedal, footswitch, or expression control.

3

Sync I/O

3.5 mm clock in/out for sending or receiving sync with start/stop messages.

4

MIDI DIN In/Out

Full-size 5-pin MIDI ports to connect with any DAW or hardware MIDI gear.

5

USB-C

Class-compliant bus power and USB MIDI connection.

6

Power switch

Sturdy on/off hardware control.

1

2

3

4

5

6

Hear it
in action

From first pulse to full groove - some short takes of the sequencer/arp in action.

Sequencer

A simple sequence with a Mutate press every loop

Chord

Chord Mode, first basic then with velocity affecting notes & strumming and finally using the Voicing feature

Arpeggiator

Basic Arpeggios then generative Arp Patterns transformed by Mutate

Artist
Corner

Kink

DJ / Producer

"What I love about Keystep 2 is that it helps me create melodies that won’t come to my mind in a regular way. I love how you can start with a simple arpeggio and you quickly morph it into an evolving loop with interesting harmonic and rhythmic structure, then you store it as a pattern just with a click of a button, all that with minimum or no menu diving. Major upgrade from the original keystep in terms of playability, although the first version was already very good."

Octave One

DJ / Producer

"I got down with the original Keystep. The lighter design, screen, and usb-c on the Keystep MK2 are huge upgrades to a great compact controller."

Maarten Vos

Composer / Producer

"The original Keystep has long been a staple in my setup for many instruments. The new MK2 is even more versatile, with great new features. As a modular synth enthusiast using CV, I love the upgraded sequencer and the ability to change length and quantization on the fly."

Low Jack

DJ / Producer

"Arturia’s KeyStep MK2 is quite a fun and wonderful tool, I must say. Especially the overdub mode for improvisation. And when you add the mutate mode, you can create really unexpected sequences. I mainly use it together with the Augmented Voices and Piano plugins. It’s incredibly inspiring when starting from a blank page. Excellent."

Press
Clippings

Gearnews

On KeyStep mk2

"The KeyStep Mk.2 takes that original concept, refines it, adds to it and reinstates the KeyStep as the premier backpack-sized, affordable Swiss Army Knife of the controller world. KeyStep Mk.2 reestablishes itself as the most affordable and useful controller on the market for every type of music maker."

KVR Audio

On KeyStep mk2

"The Arturia KeyStep mk2 successfully updates a modern classic, enhancing its role as the definitive bridge between modular hardware, CV equipment, and computer setups. The original Keystep series cemented itself as a studio staple and this latest entry looks set to only extend this tradition with well thought out additions to an already excellent controller. The robust connectivity truly makes it a fantastic purchase, breathing new creative life into your existing hardware. While users with larger setups might consider waiting for a potential update to the KeyStep Pro line, the KeyStep mk2 is an amazing, powerful, and reliable compact controller and sequencer combo that provides a fantastic core experience for studio and mobile producers alike."

Gallery

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Main Features

32‑note Slimkey keyboard with velocity & aftertouch

2 capacitive touch strips for pitch‑bend & modulation

Polyphonic step sequencer: up to 64 steps, 8‑voice polyphony

16‑mode arpeggiator with generative pattern styles

Mutate, Spice & Dice tools for live variation

Chord & Scale modes for instant harmony

OLED display with clickable encoder & RGB LED feedback

4 CV/Gate outputs (Pitch, Gate, Mod 1, Mod 2) assignable to velocity, aftertouch, mod wheel & more

Full‑size MIDI DIN In/Out + 3.5 mm Sync In/Out

Sustain / expression pedal input (TRS)

USB‑C MIDI (class‑compliant) and bus power

Power switch & Kensington lock slot

Low‑power operation; iPad® compatible (camera connection kit required)

Software bundle:

  • Analog Lab Intro (500+ sounds)

  • Ableton Live Lite

What’s in the box

Box content

  • KeyStep mk2 unit

  • USB-A to USB-C cable

Size & weight

  • Size (mm): 50 x 484 x 145 mm

  • Size (in): 1.97 x 19.06 x 5.71 in

  • Weight (kg): 1.1 kg

  • Weight (lb): 2.43 lb