KeyStep Pro
ポリフォニックシーケンシング・コントローラーキーボード。
比類なきシーケンス&アルペジオのパワーを、コンパクトでデスクトップに優しいサイズに。ビンテージハードウェア、モジュラーシステム、ソフトウェアインストゥルメントのいずれにも接続でき、クリエイティビティを力強く加速する、それがKeyStep Proです。
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An all-in-one
performance controller
Take full control of your modular rigs, outboard synths, and software studio all at the same time.
KeyStep Pro removes every barrier between you and the music you want to create, making every performance a breeze.
- 3-octave keyboard with velocity and aftertouch
- 4 independent polyphonic sequencer tracks
- 24-part integrated drum sequencer
- Unparalleled MIDI, CV, and USB connectivity
- Crisp OLED display and LED-illuminated controls


Your sound,
one step at a time
KeyStep Pro lets you craft sequences, songs, and entire setlists in real-time, with immediate hands-on access to every aspect of your performance.
Laptop or DAWless, producer or keyboardist, you can build your own sound at every level, from punching in individual drum tracks to shifting the key of every instrument at once.
Tracks
4 independent polyphonic sequencers, controlling whatever synth, module, or drum machine you want.
Patterns
16 patterns per track. Each sequencer pattern can be up to 64 steps long, and contain 16 notes per step.
Chains
Link up to 16 patterns together to create whole songs or sections of your set.
Scenes
Snapshots of all the sequences within a pattern, letting you instantly switch between sets of sequences.
Projects
Everything in one place. Load, duplicate, tweak, edit, and save for later in its onboard memory.
Unite your
gear
Connect every part of your setup
Your ever-growing collection of Eurorack modules, analog synths, and VST instruments can finally perform in sync, thanks to the unmatched connectivity KeyStep Pro has to offer.
Make the most of 4 CV, Gate and Mod outputs, 8 dedicated drum Gate outputs, Clocks, MIDI in, 2 MIDI outputs, a solo metronome output, sustain pedal input, and USB for easy power and DAW/softsynth control.

Control hardware, software & DAW
at the same time
Looking for the best modular sequencer?
How about a MIDI controller for Ableton? Or a live performance keyboard that can sync all of your favorite synths to a DAW click track? KeyStep Pro's extensive list of controls, connections, and creative functions are designed to tick every box - let's take a closer look:
Overview
KeyStep Pro
1
キーボード
Having that extra few keys makes a difference for playing chords in different octaves, and LEDs help you quickly see your sequence and content at a glance.
2
Encoders with LED
Edit note information on the fly
3
Tempo, Swing, Project editing
Dedicated hands-on control of parameters you use all the time
4
Step edit
Instant access to secondary functions for fast sequence modification.
5
Metronome with speaker
A tiny piezo speaker lets you reference your tempo, with a line output for metronome to sync with other gear
6
Crisp OLED Screen
Get your project details and editing info with high detail
7
Track Controls
Navigate in patterns, select the track type: arp, drum, or sequence, and get LED feedback any time a note is triggered or played.
8
Touch Strip
Intuitive looper control with a capacitive strip
Overview
KeyStep Pro
1
キーボード
Having that extra few keys makes a difference for playing chords in different octaves, and LEDs help you quickly see your sequence and content at a glance.
2
Encoders with LED
Edit note information on the fly
3
Tempo, Swing, Project editing
Dedicated hands-on control of parameters you use all the time
4
Step edit
Instant access to secondary functions for fast sequence modification.
5
Metronome with speaker
A tiny piezo speaker lets you reference your tempo, with a line output for metronome to sync with other gear
6
Crisp OLED Screen
Get your project details and editing info with high detail
7
Track Controls
Navigate in patterns, select the track type: arp, drum, or sequence, and get LED feedback any time a note is triggered or played.
8
Touch Strip
Intuitive looper control with a capacitive strip
Overview
KeyStep Pro
1
キーボード
Having that extra few keys makes a difference for playing chords in different octaves, and LEDs help you quickly see your sequence and content at a glance.
2
Encoders with LED
Edit note information on the fly
3
Tempo, Swing, Project editing
Dedicated hands-on control of parameters you use all the time
4
Step edit
Instant access to secondary functions for fast sequence modification.
5
Metronome with speaker
A tiny piezo speaker lets you reference your tempo, with a line output for metronome to sync with other gear
6
Crisp OLED Screen
Get your project details and editing info with high detail
7
Track Controls
Navigate in patterns, select the track type: arp, drum, or sequence, and get LED feedback any time a note is triggered or played.
8
Touch Strip
Intuitive looper control with a capacitive strip


1
2
3
4
5
6
7
8
Overview
KeyStep Pro
1
Configurable outputs
HCV, Gate, and Mod outputs, which can be freely routed for polyphonic CV output.
2
Drum gate outputs
8 Dedicated outputs for the “Drum Mode”, letting you control multiple modules.
3
Clock
Keep in sync with In and Out, and Reset out for Eurorack sequencers.
4
MIDI
Control any hardware or software with 1 MIDI in, and 2 MIDI outputs.
5
Metronome output
A dedicated audio click output, listen on a mixer, control another module, or send to a drummer!
6
Sustain input, USB, and Power supply
Overview
KeyStep Pro
1
Configurable outputs
HCV, Gate, and Mod outputs, which can be freely routed for polyphonic CV output.
2
Drum gate outputs
8 Dedicated outputs for the “Drum Mode”, letting you control multiple modules.
3
Clock
Keep in sync with In and Out, and Reset out for Eurorack sequencers.
4
MIDI
Control any hardware or software with 1 MIDI in, and 2 MIDI outputs.
5
Metronome output
A dedicated audio click output, listen on a mixer, control another module, or send to a drummer!
6
Sustain input, USB, and Power supply
Overview
KeyStep Pro
1
Configurable outputs
HCV, Gate, and Mod outputs, which can be freely routed for polyphonic CV output.
2
Drum gate outputs
8 Dedicated outputs for the “Drum Mode”, letting you control multiple modules.
3
Clock
Keep in sync with In and Out, and Reset out for Eurorack sequencers.
4
MIDI
Control any hardware or software with 1 MIDI in, and 2 MIDI outputs.
5
Metronome output
A dedicated audio click output, listen on a mixer, control another module, or send to a drummer!
6
Sustain input, USB, and Power supply


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2
3
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Artist
Corner
Tycho
Producer / Musician
"The Keystep Pro is hands down the most intuitive and inspirational sequencer I've ever used. Arturia have managed to pack an incredible amount of powerful features into a compact device that's a joy to use."
Rob Lewis
Composer
"Within 10 minutes of opening the KeyStep Pro, all my equipment is working together, and the horizons of creativity have expanded in a way I didn’t think possible."
Henry Durham
Producer Chris Brown/Bree Runway/Steve Aoki
" You can get as specific as you want with the timings, without ever having to hit pause. I feel like I’m finally free from the piano roll! My workflow has never felt better. The BeatStep Pro was a game changer for me and Arturia have done it again here."
Bogdan Raczynski
Producer
"The KeyStep Pro is all but one of these: DAW daddy, MIDI overlord, modular mother brain, sassy sync-quencer, a banana."
Press
Clippings
Engadget
On KeyStep Pro
"Arturia's KeyStep Pro is a near-perfect MIDI controller for hardware synthsThe playability of the KeyStep and sequencing power of the BeatStep Pro in one affordable package."
Future Music
On KeyStep Pro
"For melodic sequencing duties and flexible hardware control, this is one of the best devices on the market."
MusicTech
On KeyStep Pro
"It does everything you'd want it to, in an accessible way. We have an enormously enjoyable time with KeyStep Pro."
Premium software
included
Keystep Pro comes with a selection of industry-standard creative software to get your musical ideas flowing, so you can start exploring right out the box.
Analog Lab Intro

Ableton Live Lite



Gallery















Main Features
37 note slim keys, velocity and aftertouch sensitive
LED above each key for efficient visual feedback
Four track step sequencer
16 step buttons, up to 64 steps per sequence
Up to 16 notes of polyphony per step
Melodic sequencer
Real-Time recording, step recording, step editing
Pitch, velocity, gate length, time shift and probability for each note
Scale quantization with user scales
Polyphonic CV outputs
Drum sequencer
24 part drum sequencer
Polyrhythm
Performance-oriented sequencer
Forward and two random playing modes
Pattern randomization
Quantized or unquantized recording
Looper
Arpeggiator
7 arpeggiator modes, 5 octave range
Chord mode
Controller mode
Use the 5 encoders to send CCs
Automate the CCs
Crisp OLED display
4x (CV, Gate, Mod) outputs + 8 drum gate outputs
1 MIDI in, 2 MIDI out, USB, Clock synchronization
Metronome with included speaker and line output
Sustain pedal input
What’s in the box
Size & weight
Size (mm): 589 x 55 x 209 mm
Size (in): 23.19 x 2.17 x 8.23 in
Weight (kg): 2.7 kg
Weight (lb): 5.95 lb