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 encourages fluid, exploratory music creation.
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 Bend and Wheel 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, MIDI DIN, sync I/O, and pedal input, KeyStep 37 mk2 features 4 CV outputs - Pitch, Gate, Mod 1, and the new Mod 2 - all configurable as velocity, aftertouch, mod wheel, and more, ready to control modular/ hardware gear with expressive precision.
Features
- 37‑note Slimkey keyboard with velocity & aftertouch
- 2 capacitive touch strips for pitch‑bend & modulation
- Polyphonic step sequencer: up to 64 steps, 8‑voice polyphony
- 16‑mode arpeggiator with generative pattern styles
- Mutate, Spice & Dice tools for live variation
- Chord & Scale modes for instant harmony
- OLED display with clickable encoder & RGB LED feedback
- 4 encoders + Control button
- Hands-on & mode-aware editing for Seq, Arp, Chord, and Mutate
- MIDI CC button with 4 banks
Access 16 assignable MIDI CCs available across all modes
- 4 controllable CV/Gate outputs (Pitch, Gate, Mod 1, Mod 2) assignable to velocity, aftertouch, mod wheel & more
- Full‑size MIDI DIN In/Out + 3.5 mm Sync In/Out
- Sustain / expression pedal input (TRS)
- USB‑C MIDI (class‑compliant) and bus power
- Power switch & Kensington lock slot
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