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.
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FEATURING • 37-note slim-key keyboard with polyphonic aftertouch • Warm and organic, 100% analog signal path • Intuitive, welcoming knob-per-function layout • Pro-One style top-panel modulation matrix • Prophet-lineage resonant filter with bass compensation • Arpeggiator with sequencer mode • 256 world-class presets • Pro-quality, all-steel chassis
SYNTHESIS • All oscillators have simultaneously selectable waveforms – LFO too • Oscillator B supports low frequency modes • Classic Prophet-style Sync • 4-Pole resonant lowpass filter • Feedback with aggressive drive circuit • 2 ADSR envelopes • Sequencer supports glide per step
IN/OUT • Main output mono (1/4” jack) • Headphone output mono (1/4” TRS phone jack) • MIDI in, out, and thru ports • USB for bidirectional MIDI communication • Footswitch/expression pedal input
POWER • Separate power switch • 12V DC 1.2A power supply, center-positive (included) • Can be plugged into an AC outlet capable of supplying from 100 V to 240 V at 50 Hz/60 Hz. • 14 Watts maximum power consumption.
PHYSICAL SPECS • 22.13" L x 9.88" W x 2.75" H (56.2 cm x 25.1 cm x 7.0 cm) • Weight: 8.76 lbs. (3.97 kg) • Anti-theft slot |