Legendary Analog Sound, Reimagined

Fourm delivers four genuine voices of Sequential analog sound, built on the legendary Prophet-5 voice architecture-right down to its envelope response curves. With dual oscillators offering simultaneous wave selection and a classic 4-pole low-pass filter, now enhanced with bass compensation, Fourm captures the warmth and punch that shaped a generation-and takes it to the next level.

A New Fourm of Expression Fourm's 37-note slim-key keyboard features polyphonic aftertouch, unlocking expressive techniques like guitar-style note bends, solo voice swells, and other nuanced articulations — completely transforming the experience of playing a modern analog polysynth.

Modulation You Can Touch Inspired by the Pro~One, Fourm's top-panel modulation matrix puts deep sound design at your fingertips-no menu diving required. Route sources and destinations with a button press, visualize connections with color-coded indicators, and build complex modulation paths in seconds. It's fast, intuitive, and designed to keep you in the creative flow.