Up for sale a Sequential Fourm Tactive 37-Note Slim-Key Keyboard Compact Analog Synthesizer! We are an Authorized Dealer of Sequential Products! This beautiful instrument is Brand New / Never Displayed and it comes with the Full Manufacturer's Warranty*. Unit comes with its Accessories in its Original Packing.

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SEQUENTIAL FOURM

Feel the music

Fourm is a compact analog synthesizer that invites you to play, shape, and perform with unprecedented expression. With its legendary Sequential tone, hands-on modulation, and uniquely responsive Tactive™ keybed, Fourm is a creative partner helping to bring your musical ideas to life. 

Fourm’s analog 4-pole lowpass filter chip is based on a classic design known for its rich, organic tone and musical resonance. The modern implementation faithfully preserves that sonic character while adding bass compensation. Now you can crank the resonance without sacrificing low-end power — keeping your sound full, bold, and unmistakably analog.

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SPECIFICATIONS:

Two Prophet-5 lineage analog oscillators per voice

All oscillators have simultaneously selectable waveforms, including the LFO

Oscillator B supports low frequency modes for use as polyphonic LFO modulation

Classic Prophet-style Sync

Variable square wave pulse width per oscillator (PWM)

4-Pole resonant lowpass filter drawn from the Prophet-5, revs 1 & 2

Filter enhanced with bass compensation for thick sounds even with high resonance

Filter can be driven into self-oscillation with the resonance control 

Filter Keyboard tracking: quarter, half, full

Feedback with an aggressive drive circuit for extra edge

White, pink, and violet Noise types allow for greater sonic variation

Four-stage (ADSR) filter envelope generator for tone shaping and assignable modulation

Four-stage (ADSR) Amp envelope generator for volume shaping

Velocity modulation of envelope amounts for dynamic performance

One global LFO for creating movement in the sound

Seven LFO wave shapes: sine, sawtooth, reverse sawtooth, square, S/H (sample and hold), Noise, and DC

LFO can synchronize to tempo at different step values

Four LFO wave shapes can be selected simultaneously for complex modulations

Up to six polyphonic aftertouch destinations selectable simultaneously

Polyphonic aftertouch destinations: oscillator A frequency, oscillator B frequency, filter cutoff, amplitude, LFO frequency, LFO amount

Pro-One style top-panel modulation matrix

Two modulation buses with multiple sources and destinations and the ability to combine both buses at the destination

Top panel modulation sources: filter env, oscillator B, LFO

Top panel modulation destinations: oscillator A frequency, oscillator B frequency, pulse width A, pulse width B, filter cutoff, amplitude, LFO frequency, LFO amount

Polyphonic glide (portamento)

Unison (monophonic) mode with configurable voice count, from one to all four voices, plus chord memory

Vintage setting recreates classic synth characteristics by adding voice-to voice variations in component behavior

Arpeggiator with step sequencer mode

Polyphonic step sequencer with up to 64 steps and rests

Sequencer supports acid-style glide per step

Sequencer can be used as a modulation source

Tactive 37-note slim-key keyboard with polyphonic aftertouch

100% analog signal path

Intuitive, knob-per-function layout

Spring-loaded pitch wheel with selectable range per program (1 to 12 semitones up and down)

Pro-quality, all-steel chassis

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)

Main output mono (1/4” jack)

Headphone output mono (1/4” TRS phone jack)

MIDI in, out, and thru ports

USB-C  for bidirectional MIDI communication

Footswitch/expression pedal input

Pedal input also supports trigger and gate signals

Separate power switch

12V DC 1.2A power supply, center-positive (included)

Power supply 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

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*The full manufacturer's warranty is only valid through us.

All our items are fully verified by our pro technician and/or adjusted by our pro luthier before being very carefully packed by our pro service team here at the shop prior to shipment, buy with confidence!

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Canadian customers must pay any applicable sales taxes. 

Please refer to the shipping and payments details for prices.

**Depending on where you are located in Canada, free shipping may not apply to certain heavy or oversize orders.
 You can contact us for confirmation before buying