Sequential Fourm Compact 4-Voice Analog Poly Synthesizer
at B&H Photo Video
About this item
With its legendary tone, hands-on modulation, and uniquely responsive keybed, the Sequential Fourm is a compact, 4-voice analog synthesizer that's built on the legendary Prophet-5 voice architecture including the original envelope response curves and the classic Prophet 4-pole filter with enhanced bass compensation. The dual-oscillator sound engine offers simultaneous wave selection, unison, and the classic prophet-style sync.
Benefits
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
128 world-class presets
Pro-quality, all-steel chassis
Synthesis
All oscillators have simultaneously selectable waveforms (including the LFO)
Oscillator B supports low-frequency modes
Classic Prophet-style sync
4-pole resonant low-pass filter
Feedback with aggressive drive circuit
2 ADSR envelopes
Sequencer supports glide per step
- Features
- Legendary Analog Sound
- Built on Prophet-5 Architecture
- 37 Slim-Line Key Keyboard
- 2 VCOs + Unison
Specifications
- Sound Generation
Analog
- Keyboard
37 Slim Keys with Synth Action
- Touch Sensitivity
Yes
- Expression Controls
1x Pitch Bend1x Modulation
- Number of Sounds, Kits, or Samples
128x Factory Sound Preset
- Maximum Polyphony
4 Voice
- Performance Functions
Arpeggiator, Octave Shift, Sequencer
- Audio I/O
1x 1/4" TRS Main Output1x 1/4" TRS Headphone Output
- Pedal Support
1x 1/4" Expression/Footswitch
- MIDI I/O
1x DIN 5-Pin Input1x DIN 5-Pin Output1x DIN 5-Pin Thru
- USB I/O
1x USB-C (Host Connection, MIDI)
- Synth Type
Keyboard Synth
- Aftertouch
Polyphonic Aftertouch (Destination Assignable)
- Transport Controls
No
- Display
Monochrome LCD
- Number of Song Presets
No
- Multitimbrality
1-Part
- Built-In Effects
No
- Built-In Speaker
No
- Oscillators
2x Variable (Sawtooth, Sine, Square)
- Mixer
Oscillator, Oscillator 2, White Noise (Level)
- Amplifiers
1x VCA
- Envelopes
2x Filter/VCA/Assignable Envelope Generator: Delay, Attack, Decay, Sustain, Release
- Filters
Number of Filters: 1Characteristic: Analog CEM 3320 ChipType: Low-PassSlope: 4-Pole/24 dB (LPF)Controls: Cutoff, Resonance, Envelope Amount
- LFOs
Number of LFOs: 1x GlobalWaveforms: Sawtooth Up, Sawtooth Down, Square, Triangle, Random, Sample & HoldControls/Modes: Clock SyncDestinations: Oscillator 1 Frequency, Oscillator 2 Frequency, Oscillator 1 and 2 Pulse Width, Low-Pass Filter Cutoff, VCA, VCF, VCO, Filter Cutoff, Amp
- Glide/Portamento
Yes
- Sequencer
No
- Arpeggiator
Yes
- Media/Memory Card Slot
No
- CV/Gate I/O
No
- Patch Points
No
- Sync I/O
No
- Network I/O
No
- Bluetooth
No
- Power Requirements
AC/DC Power Adapter (Included)
- AC Input Power
100 to 240 VAC, 50 / 60 Hz
- AC/DC Power Adapter
12 VDC at 1.2 A, Center-Positive (Included)
- Power Consumption
14 W
- Color
Black
- Included Accessories
No
- Dimensions
22.1 x 9.9 x 2.8" / 56.1 x 25.1 x 7.1 cm
- Weight
8.8 lb / 4 kg
- Package Weight
13.47 lb
- Box Dimensions (LxWxH)
27.7 x 13.6 x 7"