Sequential Fourm

Key Features:
37-Note Slim-Key Keyboard with Polyphonic Aftertouch:
The responsive keyboard allows expressive playing, enabling techniques like solo voice swells and note bends for nuanced performance articulation.
Classic Analogue Sound Engine:
Fourm delivers warm, organic analogue tones with dual oscillators, a resonant filter, and aggressive drive, faithfully reproducing the legendary Sequential character.
Intuitive Modulation Matrix:
Route sources to destinations quickly with colour-coded indicators, making complex modulation simple, visual, and fast without navigating menus.
Legendary Analogue Tone:
Fourm draws on the heritage of the Prophet-5, offering four genuine analogue voices with dual oscillators, selectable waveforms, and a 4-pole low-pass filter. Bass compensation enhances low-end clarity, ensuring rich, dynamic sound. The synthesizer captures the warmth, punch, and character that defined classic analogue instruments while adding modern reliability and precision. Its two ADSR envelopes, oscillator sync, and feedback circuitry provide extensive sound-shaping possibilities, making Fourm a versatile tool for studio production and live performance alike.

Expressive Playability:
The 37-note slim-key keyboard with polyphonic aftertouch expands the performer’s capabilities, allowing guitar-style note bends and expressive voice swells. Every nuance of your playing translates into the sound, making Fourm ideal for musicians who value both precision and feel. The responsive keybed paired with immediate access to modulation ensures that creative ideas flow freely and that performances remain highly expressive and dynamic.

Seamless Sound Design:
Fourm’s Pro-One inspired top-panel modulation matrix simplifies routing, making complex modulation accessible at a glance. Colour-coded indicators visualise connections, and knob-per-function controls keep workflow intuitive. With 128 presets, an arpeggiator, and a step sequencer, sound design is both immediate and deep, supporting a wide range of sonic textures for electronic, experimental, and contemporary music styles.

Specifications:
37-note slim-key keyboard with polyphonic aftertouch
100% analogue signal path
Pro-One style top-panel modulation matrix
Prophet-lineage resonant filter with bass compensation
Arpeggiator with sequencer mode
128 world-class presets
Pro-quality all-steel chassis
Dual oscillators with selectable waveforms
Oscillator B supports low-frequency modes
Classic Prophet-style sync
4-pole resonant low-pass filter with feedback drive
Two ADSR envelopes
Sequencer supports glide per step
Main output mono (1/4” jack)
Headphone output mono (1/4” TRS jack)
MIDI in, out, and thru
USB for bidirectional MIDI
Footswitch/expression pedal input
12V DC 1.2A power supply included
Dimensions: 56.2 cm x 25.1 cm x 7.0 cm
Weight: 3.97 kg
14 Watts maximum power consumption
Anti-theft slot