Don’t be scared, don’t panic, KeyStep Pro is complex, but not complicated.

It might look a little intimidating at first glance, but you’ll find it’s very intuitive and easy to master once you know its key features. On this page, we’ll help you do that.

Comprehensive connections

To start things off, let’s take a look at an example setup. This shows you all the different things you can connect KeyStep Pro to.

As you can see, aside from traditional acoustic instruments, you can connect KeyStep Pro to practically any music-making hardware or software.

Voice 1-4

Using the four sets of CV outputs you can control 4 individual monophonic instruments, or one instruments with up to 4 voices of polyphony, or any combination in between.


The clock output allows you to synchronize your pre-MIDI, DIN sync drum machines, Eurorack modules or other gear.


Monitor your tempo through headphones, or use the extra output to sync another device.


Control your keyboard sustain with a dedicated pedal input.It’s a keyboard, after all!

Drum Gates

Control multiple drum machines or modules with 8 discrete triggers.


Send or receive from MIDI-enabled instruments or interface


Connect to your computer and control your DAW and software instruments.

Perfect for live performance

KeyStep Pro will become your go-to choice for performing live. It’s perfectly geared to bringing your ideas to life, reacts quickly to your creativity, and intuitively puts you in control.

Each of the 4 independent tracks can be used either for creating custom sequences or performing arpeggios. We’ve kept things straightforward: to select a track, just hit the dedicated button for whichever one you want. Track 1 can either be a standard melodic sequencer, or a powerful drum sequencer, depending on your preference and setup.

Once you’ve made a few groups of sequences, you’ll want to save them to play them again in the future. No problem, as KeyStep Pro lets you store and recall 16 different projects. Access them with the “Project” button and the menu knob.

KeyStep Pro also features the same addictive touch-sensitive looper strip as the BeatStep Pro and DrumBrute. Too popular to leave out, this little strip lets you throw in fills and breaks whenever you want, adding an unpredictable edge and live energy to your performances.

Robust and reliable

This isn’t just some flimsy MIDI keyboard, we know that KeyStep Pro will become part of your creative identity, so we made sure to make it something special.

The rigid metal baseplate adds that “reliably heavy” feel without making it feel like a burden to carry; the knobs are rubberized and wobble-free, so they don’t slip at a crucial point in your performance; the 37-note slim keyboard has the same satisfying action as the original KeyStep, but with extended range; the OLED displays are crisp, clear, and vibrant, so you can read them under stage lights with no problem.

Traveling LEDs let you follow the sequences as they play, so you’ll always be able to get a quick visual reference of where you are. We even included a handy little metronome speaker on the unit itself to give you instant tempo reference, should you want it.

With KeyStep Pro, everything is just right.

Limitless creative options

However you prefer to write, create, perform, and play, KeyStep Pro gives you all the tools and options you need to do it with style.

Real-Time Recording

A great way for keyboard players to perform on the fly. Pressing the “Record” button automatically puts KeyStep Pro in its Real-Time Recording mode. This lets you record a polyphonic sequence as you play, and either non-destructively overdub as you go, or rewrite the sequence as it progresses.


For the traditional step-sequencer fan, manually entering the steps one-by-one, either without the sequence running or while it plays in the background.

Step Editing

Focus on a step, and edit its content. Simple! You can even visualize the notes that are contained in the step on the keys above the LEDs. Select notes that you want to edit, then duplicate them, transpose, modify their length, whatever you like.

Quick Editing

Nice and easy: simply hold a step and press keys to quickly edit the content of a step.

Drum sequencer

When switched to the “drum” option, Track 1 becomes a powerful drum sequencer, giving you 16 drum parts to play with. The first 8 have analog Gate outputs so you can bring drum modules to life. Press a key to select a drum part, then edit the sequence on the steps.

Polyrhythmic patterns

One of the best loved features on Arturia sequencers and drum machines, KeyStep Pro also includes polyrhythmic sequencing abilities, letting you choose different sequence lengths per drum, and per sequence track.

Chord mode

KeyStep Pro lets you quickly enter a specific chord shape, store it, and play it by holding a single note. Great for beginners and house music producers!

Box contents

  • KeyStep Pro unit
  • Registration card
  • Quick Start
  • USB cable
  • Power supply

Size & weight

  • Instrument size : 23.2 x 8.2 x 1.5 inches (589 x 208 x 38mm)
  • Instrument weight : 5.9 lbs. (2.7 Kg)

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