The ultimate compact MIDI controller & sequencer for hybrid setups. With a 37-note Slimkey aftertouch keyboard, generative sequencing tools and deep connectivity - have the keys to control anything.
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
- Low‑power operation; iPad compatible (camera connection kit required)
Included software
Analog Lab Intro (500+ sounds)
Ableton Live Lite
Box content
KeyStep 37 mk2 unit
USB-A to USB-C cable
Keyboard
- Keys: 37 note Slimkey keyboard
- Key Size: Slim, compact profile
- Velocity: Velocity sensitive
- Aftertouch: Channel aftertouch
- Pitch Control: Capacitive touch strip
- Modulation Control: Capacitive touch strip
Sequencer and Arpeggiator
- Step Sequencer: Polyphonic step sequencer
- Maximum Steps: Up to 64 steps per sequence
- Polyphony: Up to 8 voice polyphony per step
- Arpeggiator: 16 mode arpeggiator with generative pattern styles
- Pattern Chaining: Yes
- Live Tools: Mutate, Spice and Dice for real time variation
- Chord Mode: Yes
- Scale Mode: Yes
- Automation: Record bend and modulation data into sequences
Controls and Display
- Encoders: 4 dedicated encoders plus Control button
- Mode Aware Editing: Hands on editing for Sequencer, Arpeggiator, Chord and Mutate parameters
- MIDI CC Control: MIDI CC button with 4 banks
- Assignable CCs: 16 assignable MIDI CCs available across all modes
- Display: OLED display with clickable encoder
- Visual Feedback: RGB LED feedback
Connectivity
- USB: USB C MIDI, class compliant, bus powered
- MIDI: Full size MIDI DIN In and Out
- Sync: 3.5 mm Sync In and Sync Out
- CV Outputs: 4 controllable CV and Gate outputs (Pitch, Gate, Mod 1, Mod 2)
- CV Assignments: Assignable to velocity, aftertouch, mod wheel and more
- Pedal Input: Sustain or expression pedal input (TRS)
- Power: Low power operation via USB
- Security: Kensington lock slot
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