The original KeyStep 37 earned its place on desks and stages worldwide for good reason. Compact, versatile and genuinely playable, it sat at a sweet spot between minimal keyboard controllers and full-blown production rigs. With the mk2, Arturia has not simply refreshed the aesthetics. The revisions run deeper than that, addressing real-world limitations whilst adding tools that push the instrument into decidedly more creative territory.
The headline additions are Mutate and the Phrase Arpeggiator, both designed to keep sequences evolving without stopping the music. Alongside these sits an updated OLED screen, a second CV Mod…




