Deep analog sound with the Sequential Fourm

The Sequential Fourm is a 4-voice polyphonic analog synthesizer that condenses the brand's sonic legacy into a compact, powerful, and creative format. Inspired by the character of the classic Prophet and OB, this instrument offers analog oscillators with continuous waveforms, resonant filters, and a workflow designed for real-time sound exploration. With a flexible modulation architecture, step sequencer, arpeggiator, and programmable presets, it is ideal for both studio and live use. Its portable size and clear interface make it perfect for producers, keyboardists, and sound designers looking for a synthesizer with character without compromising control or versatility.

Key features of the Sequential Fourm

• 4 voices of true analog polyphony
• 2 oscillators per voice with continuous waveforms
• Multimode resonant filter with saturation
• Built-in step sequencer and arpeggiator
• Memory for 512 user programs

Why choose the Sequential Fourm?

Elite analog tone in a portable and creative format. The Sequential Fourm combines the brand's classic sound design with modern tools for composition and live performance. It is perfect for creating powerful basses, expressive pads, or leads with presence, and its workflow is ideal for both improvisation and detailed design. A compact yet professional analog synthesizer, ready to take center stage in any studio or live setup.

Technical specifications of the Sequential Fourm

• 4 voices of analog polyphony
• 2 analog oscillators per voice
• Sub-oscillator and voice sync
• 2/4-pole resonant analog filter
• Dual ADSR envelopes per voice
• 2 assignable LFOs with multiple waveforms
• Modulation matrix with 16 routes
• 64-step sequencer
• Arpeggiator with multiple modes
• 512 user memories + 512 factory presets
• OLED display and high-resolution potentiometers
• MIDI In/Out/Thru + USB MIDI
• Balanced L/R outputs + headphone output
• Analog clock input/output (sync)
• Dimensions: approx. 36 × 19 × 8 cm
• Weight: approx. 2.6 kg