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 checkoutAt 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 QuestionsWhat 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.
