Arturia KeyStep 37 Mk2 is a versatile controller and sequencer that combines hands-on playability, deep sequencing tools and broad hardware/software connectivity. Whether crafting melodies on a modular rig or sequencing soft synths in a DAW, KeyStep 37 Mk2 fits directly into any workflow and sparks new ideas.
- 37‑note slimkey keyboard with velocity and aftertouch
- Capacitive touch strips for pitch‑bend & modulation
- Polyphonic step sequencer with pattern chaining, capture arpeggio to sequence, up to 64 steps
- Realtime or step/unquantized recording
- 16‑mode arpeggiator with generative pattern styles
- Mutate, Spice and Dice tools for live variation
- Chord and scale modes for instant harmony
- OLED display with clickable encoder and RGB LED feedback
- MIDI CC button with 4 banks
- Access 16 assignable MIDI CCs available across all modes
- CV/gate outputs: pitch, gate, mod 1/2 (assignable to velocity, aftertouch, wheel and more)
- 5-pin MIDI in/out and 1/8 sync in/out
- Sustain / expression pedal input
- Class compliant USB-C MIDI and bus power
- Power switch
- Kensington lock slot
Playability
KeyStep 37 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 37 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 pitch bend and modulation automations – keep ideas evolving with immediacy.
4 knobs to rule them all
Four dedicated encoders provide immediate, hands-on command over the arpeggiator, sequencer and Mutate parameters for a streamlined performance workflow and minimal menu diving. These are also freely assignable to custom MIDI CC and CV/gate destinations.
Hardware connectivity
Hook up to virtually anything: alongside USB-C MIDI, 5-pin DIN, sync I/O and a pedal input, KeyStep 37 Mk2 features 4 CV outputs – pitch, gate, mod 1 and mod 2 – all configurable as velocity, aftertouch, mod wheel and more, ready to control modular/ hardware gear with expressive precision.
| Specification | Value |
|---|---|
| SKU | ART-KEYSTEP37MK2 |
| Vendor | Arturia |
| Aftertouch | Yes |
| Bus Power | Yes |
| Controller Type | Keyboard |
| Included From Manufacturer | USB-C to USB-A cable |
| Weighted Keys | No |
| Number of Keys | 37 |
| Key Size | Slim Keys |
| MIDI | In, Out, and USB |
| MPN | 430321 |
| Key Action | Synth action with velocity and aftertouch |
| Onboard Controllers |
Pitch bend touchstrip Modulation touchstrip |
| Control Connections |
1/4" input for sustain/momentary footswitch or expression pedal 1/8" pitch CV output 1/8" gate CV output 1/8" mod 1/2 outputs assignable to velocity, aftertouch, wheel and more 1/8" sync input 1/8" sync output |
| Arpeggiator | 16 modes |
| Number of MIDI Control Zones | 1 |
| Compatible Devices |
macOS iPadOS (camera connection kit required) Windows |
| Bus Power | Yes |
| Software Editor | Yes |
| Width | 21.54" |
| Depth | 5.83" |
| Height | 1.69" |
| Product Weight | 2.4 lb |
| Unique Features |
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Arturia hardware warranty is one year parts & labor, except for issues caused by the customer, such as mechanical/electrical damage, that are non-warranty. All warranty repairs/exchanges are handled through the new Arturia Service Center in Bellingham, WA. For warranty service, an RA# must first be obtained from Arturia. Arturia will pay for return shipping of the repaired/exchanged product to the store/customer. Arturia Service may charge a fee (restocking or return to dealer fee) for products that are received with 'no problem found' (returned to Arturia without being tested prior).
Ground shipping is FREE to the 48 contiguous United States for orders $99 and up.*
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