Backed by us. Trusted by you.
Victory isn't given. It's earned.
We build our own instruments and carry the pro audio and video brands we trust, for everyone from first-timers to working pros, from your garage to the big stage. Started in 2017.
Arturia KeyStep 37 mk2 is a 37-key controller and polyphonic step sequencer with four mode-aware encoders, an OLED display, a 39-LED key guide, USB-C, MIDI DIN in/out, sync I/O and four assignable CV outputs (Pitch, Gate, Mod 1, Mod 2).
It is the pick for hybrid and modular setups that want more range, more hands-on editing and ratcheting in a still-compact controller.
At a Glance
| Keybed | 37 velocity-sensitive slim keys with aftertouch, 39-LED light guide |
| Sequencer | 64-step polyphonic sequencer with pattern chaining, unquantized recording and global ratcheting |
| Arpeggiator | Phrase arpeggiator with 16 modes including generative patterns |
| Controls | 4 mode-aware encoders plus screen encoder, 16 assignable MIDI CCs across 4 banks |
| Creative tools | Mutate, Spice, Chord and Scale modes |
I/O and Connectivity
| CV outputs | 4 x 3.5mm: Pitch, Gate, Mod 1 and Mod 2, assignable to velocity, aftertouch, mod wheel and more, with per-output envelope and LFO modes |
| MIDI | Full-size 5-pin MIDI DIN input and output |
| Sync | 3.5mm clock in and out with start/stop |
| Pedal | TRS input for sustain footswitch or expression pedal |
| USB-C | Class-compliant USB MIDI, bus powered, dedicated power switch |
Key Features
- Hands-on editing: four encoders edit sequences, arps, chords and CCs without menu diving
- CV modulation engine: Mod outputs can run an ASR envelope, cycling envelope or LFO per output
- Ratcheting: global 1x-4x ratcheting adds rhythmic drive to sequences
- Visual feedback: 39 LEDs above the keys show notes, scales and sequence activity live
Frequently Asked Questions
What does it add over the 32-key KeyStep mk2?
Five more keys, four mode-aware encoders, a 16-CC MIDI control engine, a 39-LED key guide and ratcheting.
How many CV outputs does it have?
Four: Pitch, Gate, Mod 1 and Mod 2, each Mod assignable and able to output envelopes or LFOs.
Does it have full-size MIDI ports?
Yes. 5-pin MIDI DIN in and out, plus 3.5mm sync I/O.
How is it powered?
Over USB-C bus power, with a physical on/off switch.
Need help choosing?
Victory Musical Instruments can help compare models and configurations for your setup.