SEQUENTIAL FOURM -new ANALOG 'affordable' polysynth!! (SOUNDS DEMO, no talking)

video upload by FutureMusic.es

"Discover the Sequential FOURM, a new compact polyphonic analog synthesizer that brings the legendary Prophet sound into an affordable and portable format. FOURM features authentic four-voice analog architecture with a 37-key keyboard supporting polyphonic aftertouch—unlocking expressive playing techniques rarely seen at this price point.

Timeline
00:01 Intro (demos by the Sequential 'audio demo team': Peter Dyer, Matia Simovich and James Terris)
00:32 Assorted analog lines, with 15 minutes of audio recorded directly from FOURM, with only occasional light limiting and no additional processing
15:52 'A New Fourm Of Expression' (official launch demo by Peter Dyer)
17:20 Outro"

Sequential Fourm - I love this synth!

video upload by Scott McAuley Sounds

"Patches will be available at https://www.orano.co.uk/shop or http://www.synthsounds.co.uk

From my forthcoming custom bank 'Quatrain Vol.1' for the ‪@SequentialLLC‬ Fourm, this one is called SM Insidious, making great use of the Fourms modulation options. This synth is excellent for film and game scoring.

Enjoy
Scott.

© Scott McAuley. All rights reserved.
#custom #sounds #fourm"

Polyphonic Aftertouch Techniques with Glasys

video upload by Sequential

"Discover easy ways to integrate polyphonic aftertouch into your playing — no virtuoso skills required. In this video, Glasys explores a range of expressive techniques that showcases creative possibilities using poly AT.

Many of these approaches aren’t immediately obvious if you haven’t had hands-on experience with a polyphonic aftertouch keybed, but Glasys makes them intuitive and accessible. In just a few minutes, you’ll learn new ways to shape your sound and deepen your musical expression.

0:00 Introduction
0:35 Filter cutoff modulation
1:14 Pitch modulation
1:55 Poly aftertouch with arpeggio
2:26 LFO frequency modulation
3:02 Adding vibrato (LFO amount)
3:46 Two different sounds
4:29 Reducing amp level
5:06 Modulating multiple parameters
5:35 Subtle modulation
5:55 Conclusion

Learn more about Fourm at Sequential:
https://sequential.com/modern-analog/..."

Machina Bristronica 2025 Walkthrough

video upload by True Cuckoo

https://www.truecuckoo.com/

Machina Bristronica 25 Gear

video uploads by Sound On Sound magazine

Playlist:

1. Machina Bristronica 25: Sequential Fourm
2. Machina Bristronica 25: Enjoy Electronics ELFO
3. Machina Bristronica 25: UDO Audio DMNO
4. Machina Bristronica 25: PWM OSCar Rebirth
5. Machina Bristronica: Rides in the Storm New Modules
6. Machina Bristronica 25: AM Synths Diode-01

Sequential Circuits PRO-8 SN 02022

Note: links to listings are affiliate links for which the site may be compensated.

via this Reverb listing

"An 8-voice analog synthesizer. Also known as the Split-8.
It features a 2-channel multi-timbre specification, allowing you to split or layer two different sounds to play simultaneously."

The synth with the built-in whiteboard.

CLICK FOR MORE »

Sequential Trigon 6 "SM Analog Plucks"

video upload by DKS SYNTH LAB

Sound created by: ‪@scottmcauleysounds‬ https://www.orano.co.uk/shop

12:01 in Scott's video here.

Sequential Ob-6 Analog Synthesizer Module Venta Instrumentos Vintage Olimusic

video upload by Pablo Olivera

"Apogee Symphony Desktop & Logic Pro"

Sequential Fourm - Huge Sound! Compact Synth!

video upload by Scott McAuley Sounds

"Sequential Fourm - Huge Sound! Compact Synth! #synth #fourm #sequential

Patches will be available at https://www.orano.co.uk/shop or http://www.synthsounds.co.uk"

Sequential Fourm - Preset 49 - BrO Presh Bazr : Preset of the Week

video upload by Scan Pro Audio

Check with dealers on the right for pices and availability of the new Sequential Fourm.

You can find additional demos of the Fourm in previous posts here.

Deep Forest Sing with the birds

video upload by Deep Forest

Some great synth spotting inlcuding a Waldorf Wave and Oberheim OB-MX.

Explore Deep Forlest here: https://deep-forest-official.myshopify.com/

Serviced Sequential Circuits Pro One with Fatar Keybed, Original Box & Manual

Note: links to listings are affiliate links for which the site may be compensated.

via this eBay listing, also on Reverb

"The Sequential Circuits Pro-One is a legendary monophonic analog synth prized for its fat bass, searing leads, and incredibly flexible modulation capabilities. Compact yet powerful, it delivers the iconic Prophet-series sound in a hands-on design that’s become a must-have for serious synth players and collectors.

This Pro One is in excellent condition. It includes the original shipping box (and if being shipped, this is the box it will ship to you in) and manual (which has some writing in it). This Pro One was serviced by Synthchaser in September 2025. Work done included:

Recapped all original tantalum capacitors
Replaced original unreliable membrane style keybed with Fatar keybed
Cleaned pots & switches
Tuned & calibrated"

CLICK FOR MORE »

Creating a Track with the new Sequential Fourm | Voltage Labs

video upload by Voltage Labs

"In this video, we dive into the brand-new Sequential Fourm, a 4-voice analog synthesizer with vintage character and modern features. Inspired by classics like the Prophet-5 and Pro One, the Fourm brings a timeless sound in a compact, affordable package."

Sequential Trigon 6 "SM Glorious Time" Pad

video upload by DKS SYNTH LAB

"Sequential Trigon 6 "SM Glorious Time" Pad #dksynthlab #sequentialtrigon6 #trigon6"

MOON Part 2 - Ambient Modular #19 // Subharmonicon, Rings, Take 5, Juno, Analog Four

video upload by David Falcon

"Parte dos de dos de esta mini serie. Misma secuencia en el @MoogSynthesizers Subharmonicon pero con un arreglo completamente diferente.
En este he añadido un par de elementos en post, ya que en la segunda parte necesitaba un pequeño empujón el tema. Para ello he usado el @SequentialLLC Take 5 y la emulación del Juno de @ArturiaOfficial .
Muy contento con el resultado.
Espero que esta comparativa os haya resultado interesante.

(eng)
Part two of two of this mini series. Same sequence in the Moog Subharmonicon but with a completely different arrangement.
In this I have added a couple of elements in the post, since in the second part the topic needed a little push. For this I have used Sequential Take 5 and Arturia's Juno emulation.
Very happy with the result.
I hope you found this comparison interesting."

Introducing the Sequential Fourm

video upload by Sequential

Update: the first user videos added below. Note: this post is pinned on top, see below for new posts going up throughout the day.]

"Fourm 4-voice analog synth with polyphonic aftertouch

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.

Synth sounds and drums exclusively by Fourm. Composed by Peter Dyer."

https://sequential.com

See the dealers on the right of the site for availabily.

User videos:



Playlist:

1. The new Sequential Fourm in 60 seconds! #analogsynth #synth - Available at Signal Sounds
2. Sequential FOURM -- J3PO demo & overview
3. Sequential Fourm Analog Synth INHALT Demo & Discussion
4. Sequential FOURM Review — Classic synth sounds in a small package! - BoBeats
5. Introducing the Sequential Fourm Synth | First Look & Demo - Gear4music Synths & Tech
6. Sequential Fourm: Poly aftertouch, stacked waves, expressive arps – First look and sound demo - MusicRadar Tech
7. Sequential Fourm Performances & Overview - Sweetwater Soundcheck
8. SEQUENTIAL FOURM: the synth we’ve ALL been waiting for? - Projet Home Studio

Press release and pics follow:


Sequential Introduces Fourm: A Four-Voice Analog Synth with Polyphonic Aftertouch

A New Fourm of Expression

San Francisco, CA — September 23, 2025 — Sequential has announced the release of its most affordable, synthesizer to date. Fourm is a compact, 100% analog instrument that redefines expressive electronic performance. With its warm, organic tone, hands-on modulation routing, and a uniquely responsive polyphonic aftertouch keyboard, Fourm is ready to bring your musical ideas to life.

At its core, Fourm delivers four analog voices of genuine Sequential sound, derived from the legendary Prophet-5 — complete with dual oscillators, a classic 4-pole lowpass filter, and envelope curves modeled after the 1978 original. The result is unmistakable Sequential warmth and punch, now with overdriven feedback for a performance-ready edge.

For the first time in 40 years, Sequential has returned to polyphonic aftertouch. The team developed the new Tactive™ slim-keys poly AT keybed to work in concert with Fourm’s analog synthesis engine. Every element was co-designed and precisely calibrated to unlock new levels of expression, enabling a deeper connection to our signature sound that no off-the-shelf keybed could deliver. The result is a more expressive bond between player and instrument, energizing new modes of creativity.

“Wowww holy smokes: this thing sounds and feels amazing,” said Bryn Bliska, (keyboards for Chappell Roan, Maggie Rogers, Jacob Collier). “The polyphonic aftertouch is seriously so fun… Sequential nailed it.”

“We’re so excited to bring this innovative all-analog keyboard into the world,” said David Gibbons, Sequential CEO. “At a price-point that most people expect to pay for a monophonic synth, we think this product will invite legions of musicians who have longed for the magic of polyphonic analog sounds to start their journey of discovery with Sequential.”

Notably inspired by the Pro~One, Fourm’s top-panel modulation matrix puts deep sound design at your fingertips—no menu diving required. Modulation sources and destinations are clearly labeled, connections are made with a button press, and color-coded indicators make even complex routings easy to manage.

With its compact footprint, professional-grade build, and a sound engine rooted in Sequential’s most iconic instruments, Fourm is a powerful new voice in analog synthesis.

About Sequential
Sequential has been at the forefront of synthesizer innovation since 1974, creating instruments that inspire musicians and shape the sound of modern music. With a legacy built on the iconic Prophet synthesizers, Sequential continues to push the boundaries of sound design with cutting-edge technology and exceptional craftsmanship.

CLICK FOR MORE »

Sequential Trigon 6 Custom patches free download

video upload by Infested Alien

"Download my custom patches for free here!
https://drive.google.com/drive/folder...

All patches are created by Infested Alien from scratch.

Please make backup on your Trigon 6 before you try using them! How to perform backup is found at the end of the patch demo in the video. The patches can be downloaded single or as an zip file containing all of them. When sending them over via SYSEX they are only stored in buffer memory so you need to write them one by one to save them on the synth at your wanted locations. Enjoy!"

Sequential Prophet REV2 Resonance

video upload by synthcurry

"20250921 resonance boy #synth #synthesizer"

Sequential Prophet Rev 2 / Summer Solstice 2 / Ambient

video upload by Brad Shields

"Patch played through the Rev 2's Delay"

electronic stressless

video upload by itramtal