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Arturia

Arturia Arturia KeyStep 37-Key Controller & Sequencer USB/MIDI/CV Keyboard Controller

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Apr 17
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Size: 37 Keys


Features

  • Playability: KeyStep mk2 features a velocity-sensitive 37-note Slimkey keyboard with aftertouch for expressive control in a small footprint. Pitch and mod strips provide intuitive realtime shaping, while built-in chord and scale modes make new musical phrases effortlessly explorable.
  • Ideas machine: KeyStep mk2 is a generative ideas machine as much as a controller, with its polyphonic step sequencer, 16-mode arpeggiator, pattern chaining, and creative tools like mutate all working in symbiosis. Build a riff with the arpeggiator, convert it into a sequence then transform it! Use Mutate to hear new variations on the fly, try a different octave, adjust note lengths, add silences, overdub additional notes, record Bend and Wheel automations - keep ideas evolving with immediacy.
  • Hardware connectivity: Hook up to virtually anything. Alongside USB-C MIDI, MIDI DIN, sync I/O, and pedal input, KeyStep mk2 features 4 CV outputs - Pitch, Gate, Mod 1, and the new Mod 2 - now configurable as velocity, aftertouch, mod wheel, and more, ready to control modular hardware gear with expressive precision.

Brand: Arturia


Number of Keys: 37


Connectivity Technology: USB


Special Feature: Polyphonic Step Sequencer, Arpeggiator, Pattern Chaining, Creative Tools, CV Outputs


Model Name: KeyStep


Number of Keys: 37


Connectivity Technology: USB


Additional Features: Polyphonic Step Sequencer, Arpeggiator, Pattern Chaining, Creative Tools, CV Outputs


Instrument Key: Any


Compatible Devices: Laptop, PC


Supported Software: Ableton Live


Connector Type: USB Type C


Hardware Interface: USB Type C


Keyboard Description: Ergonomic


Control Type: Keyboard Controller


Platform: Mac OS X 10.10 Yosemite, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks, Mac OS X Intel, Windows 11


Human Interface Input: Buttons, Keyboard


Hardware Platform: PC/Mac


Instrument: Keyboard


Control Method: Touch


Color: White


Brand Name: Arturia


Model Name: KeyStep


Model Number: 430321


Included Components: USB Cable, User Manual


Model Year: 2026


Manufacturer: Arturia


Warranty Description: 2.


Item Dimensions D x W x H: 20.98"D x 7"W x 3.11"H


Size: 37 Keys


Item Weight: 2.4 Pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Apr 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews

    • Wow
Size: 32 Keys
For starters, I'm not a synth guy, I'm a guitarist who got bored and is dipping my toes into the world of synth. I'm only running a Behringer VSmini and that goes through a Walrus Fundamental Ambient Reverb. I've had several other controllers over the years, but this one definitely stands out as the best one for live performance work. The onboard sequencer and arpeggiator are fantastic, it super easy easy to use and works great. I got this one and the V1 because I was concerned about the menu diving versus having physical controls. However, all of the functions are super easy to access and the V2 has the actual tempo you're playing and clock control which is a nice step up from the V1. For my little live synth set up, it works great and it has opened up a lot of experimentation for me. ... show more
Reviewed in the United States on March 5, 2026 by dstaudy
    • It's only g.a.s. if you buy two
Size: 32 Keys
Get this yesterday if you've been stuck mashing with 25 key Midi controllers and synthesizers because you're not an "actual" keyboard player. You'll quickly find that the 7 extra keys are just enough to avoid sounding stale without changing octaves. The size is complimentary to most tetris arrangements. Everything that you've learned so far will roll onto these keys with ease as they are what I would call "jumbo mini" keys. This my first experience with aftertouch- it unlocks creative expression where a strings player would expect it. Changing midi channels is simple and the arp/sequencer is well labeled. Mutate button mutates- I could mistake it for rolling spice and dice on the Microfreak. I personally don't find extensive use of arps in my workflow but they sound good and are superior to many others. Arturia always makes gig/studio grade equipment with the active musician in mind. With those standards, they could add visible jack labels to a machine that pulls off a double helix light show while mutating. ... show more
Reviewed in the United States on December 20, 2025 by Ken
    • Review
Size: 32 Keys
It actually exceeded my expectations. Very good very portable. Great size easy to put in a travel bag easy for on the go travel
Reviewed in the United States on March 15, 2026 by stanley etienne
    • The keys are buns respectfully
Size: 32 Keys
Terrible quality keys though everything else was really impressive for the price but the keys weren't for me
Reviewed in the United States on February 3, 2026 by shlomo ringel
    • great keys for the small size
Size: 32 Keys
Fantastic
Reviewed in the United States on November 24, 2025 by Michael
    • Randomly stopped working
Size: 37 Keys
Ordered and worked for a month or two and now wont even turn on all of a sudden. I liked the functionality until then. I will go with a different company for midi keyboards from now on. Through Amazon I have tried to get a refund and they have not responded. Disappointed with Arturia. Feels cheaper than other Arturia products. ... show more
Reviewed in the United States on March 25, 2026 by Tonya
    • Welcomed update to the keystep
Size: 32 Keys
The item arrived lot earlier than expected, box was slightly damaged but everything works just as it should. The key step MK2 has improved and welcomed features from other Arturia keyboards & synths, however, the build quality is lighter plastic; feeling quite hollow compared to the previous version. The keys are excellent though. In terms of functionality, it does what it should with hardware, sometimes midi doesn’t work in ableton. ... show more
Reviewed in the United States on January 7, 2026 by Z-Ahasan

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