When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Take On Your Best Sonic Form in Legendary Style
With an eye toward sonic design and an impressively reconstructed modern palette built on the Prophet-5 formula, the Sequential Fourm compact polyphonic analog synthesizer is firmly rooted in expression and versatility. Historic Sequential tones summoned through a 100% analog signal path make the Fourm one of the company\'s most eloquent synthesizers, inviting a wealth of hands-on modulation, keybed expression, and modulative experimentation to shape, play, and expand sounds beyond any creative vision. Modern implementations, including an onboard arpeggiator/sequencer engine, a top-panel modulation matrix, and 128 preloaded factory presets, take the Fourm\'s ancestral Prophet sonics to boundless new heights. To top it all off, an extensive I/O, including main and headphone outputs, MIDI in, out, and thru connections, and USB MIDI implementation, makes Fourm seamless to include in any level setup, rounded out by a durable all-steel chassis to tough out even Sweetwater is an Authorized Sequential Dealer
- Genuine New Item
- Sweetwater\'s 2-year warranty*
Sequential Fourm Compact Polyphonic Analog Synthesizer 37-key Polyphonic Analog Synthesizer with 2 VCOs, Low-pass Filter, 2 ADSR Envelopes, Sequencer/Arpeggiator, Polyphonic Aftertouch, Modulation Matrix, and 128 Presets Take On Your Best Sonic Form in Legendary Style
With an eye toward sonic design and an impressively reconstructed modern palette built on the Prophet-5 formula, the Sequential Fourm compact polyphonic analog synthesizer is firmly rooted in expression and versatility. Historic Sequential tones summoned through a 100% analog signal path make the Fourm one of the company\'s most eloquent synthesizers, inviting a wealth of hands-on modulation, keybed expression, and modulative experimentation to shape, play, and expand sounds beyond any creative vision. Modern implementations, including an onboard arpeggiator/sequencer engine, a top-panel modulation matrix, and 128 preloaded factory presets, take the Fourm\'s ancestral Prophet sonics to boundless new heights. To top it all off, an extensive I/O, including main and headphone outputs, MIDI in, out, and thru connections, and USB MIDI implementation, makes Fourm seamless to include in any level setup, rounded out by a durable all-steel chassis to tough out even the most rugged stage and studio environments with ease. Whether you\'re a fan of the timeless Prophet lineage or need a formidable machine to add to your sonic arsenal, Fourm is more than up for the challenge — all it needs is an enlightened synthesist to take up its reins.
Historic Prophet sonics, reborn
The Fourm\'s 100% analog signal path, based on the historic Prophet-5 voice architecture, begins with two onboard VCOs with independent, selectable waveforms. Further down the path, a Prophet-lineage 4-pole resonant lowpass filter with bass compensation makes for expressive sound shaping, capable of even more experimentation via onboard modulation controls, while dual ADSR envelopes summarize the synth\'s classic signal layout, allowing for expert control over long-form pads, quick-release stabs, exploratory effects, and more. Moreover, Fourm\'s fully stacked arpeggiator and sequencer engine with glide-per-step support paves the way for further rhythmic forays. Not sure where to start? Sweetwater synthesists suggest diving into the Fourm\'s 128 factory presets, ensuring immediate creative inspiration and playability whenever — and wherever — it\'s required.
Innovative modulation control
With an onboard modulation matrix located front and center on the Fourm\'s durable all-steel chassis, exploratory sound dynamics are never far from reach. Inspired by the Pro-One, the mod matrix supplies a bounty of possible route sources and destinations at the touch of a button, allowing for complex modulation paths spanning your ASDR envelopes, the onboard filter, the synth\'s polyphonic aftertouch keybed, and beyond. As complex as your creations may get, the Fourm\'s color-coded indicators allow you to seamlessly visualize your modulative connections, making it easy to edit or manipulate your parameters or even build entirely new paths on the fly. Combining this expansive modulation potential with the synth\'s legendary Prophet-based architecture, taking historic analog tones to modern heights is precisely what the Fourm is all about.
Expression-centered playability
Ask any astute Sweetwater synthesist: It pays to take complete control over your play style. With Fourm, rest assured you can. The synth\'s 37-key architecture utilizes slim-style keys for compact yet robust control over every note. To boot, polyphonic aftertouch support supplies much-needed access to expressive techniques to keep your playing nuanced and articulate at every stage in the process. The result? A modern analog polysynth that allows you to take the solid sounds of Sequential\'s Prophet series and apply them to a versatile modern palette. Whether you plan on constructing acoustic-style note bends, long-form swells, evolving stabs, or anything in between, you\'ll have no problem making your visions come to life with Fourm.
Sequential Fourm Features:
- Slim-key keyboard with polyphonic aftertouch supplies ample dynamic versatility onstage and in the studio
- 2 onboard VCOs with selectable waveforms boast expansive sound-building potential
- Oscillator B supports low frequency modes for sub-level sound manufacturing
- Classic Prophet sync control
- Prophet-lineage 4-pole resonant lowpass filter with bass compensation facilitates legendary sonic shaping potential
- Dual ADSR envelopes for classic dynamics control
- Onboard arpeggiator/sequencer engine with glide-per-step support
- Pro-One-inspired top-panel modulation matrix with color-coded connection indicators and expansive routing options for serious dynamic experimentation
- 100% analog signal path promises warm, organic sound with plenty of potency for any performance
- 128 preloaded factory presets for immediate creative inspiration and playability
- Main output and headphone outputs for versatile setup integration
- Back-panel MIDI in, out, and thru connections with optional offerirectional USB MIDI communication
- Durable all-steel chassis toughs out rugged stage and studio environments with ease
SpecificationDetail Type Compact Synthesizer Keyboard Analog/Digital Analog Number of Keys 37 Type of Keys Slim-key Aftertouch Yes, Polyphonic Presets 128 x Presets Oscillators 2 x VCOs Filter 4-pole Resonant Lowpass Filter Envelope Generator 2 x ADSR Envelopes Arpeggiator Yes, with Sequencer Mode Audio Outputs 1 x 1/4\" TS (main) Headphones 1 x 1/4\" TRS USB 1 x USB-C MIDI I/O In/Out/Thru/USB Pedal Inputs 1 x 1/4\" (expression/footswitch) Mod Matrix Pro-one Style Top-panel Power Source 12V/1.2A DC Power Supply (included) Height 2.75\" Width 22.13\" Depth 9.88\" Weight 8.76 lbs RETURN INFORMATION We want you to be completely happy with your purchase from Sweetwater. If you are not satisfied with your product, you may return it for a refund of the purchase price within 30 days. If your purchase was eligible for Free Shipping, the shipping cost will be deducted from your credit or refund. Returns must be in the complete and original packaging with all accessories and complete documentation (Owner\'s Manual, warranty card, quick start guides, etc.), show no signs of wear or use, and include a Return Authorization number or be subject to a restocking fee. Fast, FREE Shipping!
- Nearly every order received by 3PM Eastern ships the SAME DAY!
- FREE shipping to lower 48 states.
- Our central location reaches most states in 1-4 business days
- 99.95% warehouse accuracy
We are proud to provide some of the fastest turnaround times on . We use FedEx or UPS for most items, and USPS for smaller items. Residents of Hawaii, Alaska, and Puerto Rico should contact us for a shipping quote.
PLEASE NOTE: We cannot ship large items to PO boxes, please provide an alternate address. If you have questions, feel free to contact us.
Buy with confidence! Sweetwater\'s been selling on since 2001, with 99.9% positive response!
- More than 30 years in business
- World-class customer service
- Fast, FREE shipping
- Free 2-year warranty on nearly every product*
- Free tech support from audio experts
*Please reach out for warranty information
