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.

Free shipping Free local pickup in Miami Financing at checkout

At a Glance

I/O and Connectivity

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.