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2-year warranty & 30-day money-back guarantee included
If you decide your order isn't suitable for any reason you can return it - just let us know within 30 days of receiving it. Please keep hold of all the original packaging until you're sure you want to keep the order.
Eligibility for Money Back Guarantee
Important: For hygiene and software licensing reasons, some items are only eligible for our Money Back Guarantee if they are returned to us unused and sealed in the original packaging with all software still "unregistered." Details of exclusions are shown within the product descriptions. Products include:
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We can collect your return for a small fee, or you can send it back to us yourself. The collection fee can be found in the returns information on each product's page on Gear4music.
In the unlikely event that any item in this order is faulty, damaged or incorrect on receipt, notify us within 14 days and we'll arrange a free collection.
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This table provides an overview of your statutory consumer rights, compared with our standard returns policy and optional extended money back guarantee and warranty.
| UK & Europe | EU Standard | Gear4music Standard | Gear4music Optional |
|---|---|---|---|
| Return Period | 14 days | 30 days | up to 180 days |
| Standard delivery charges refunded? | Yes | Yes | Yes, up to 30 days |
| Upgraded delivery charges refunded? | Standard costs only | Standard costs only | Standard costs only |
| Free collection on cancellation | No | No | Yes, up to 30 days |
| Free collection if defective, delivered damaged or incorrect item | Yes, within 14 days | Yes, within 14 days | Yes, within 30 days |
We are unable to accept returns of any custom made items designed to work together as a unique package and some items are only eligible for money back guarantee if they are returned to us unused and sealed in the original packaging. For full information on our returns policy, please refer to our returns and refunds information guide.
Key Features
The Sequential Fourm is a compact analog synthesizer designed for players, sound designers and performers who value expressive control and authentic analog tone. Featuring four voices of classic Sequential sound built on Prophet-5 architecture, it delivers warm, punchy character with modern flexibility.
Product Ref: 343849
At the core of the Sequential Fourm lies a four-voice analog architecture that stays true to the heritage of the Prophet-5. The signal path is 100 percent analog, with envelope response curves modelled directly after the original design. This ensures that Fourm captures the musical feel and responsiveness that defined early Sequential instruments.
Each voice features two oscillators with simultaneous waveform selection. Unlike traditional analog synthesizers that restrict you to a single waveform at a time, Fourm allows you to blend waves freely for a richer harmonic palette. Oscillator B includes a low-frequency mode for modulation duties, adding even more flexibility. The classic oscillator sync function is also present, enabling harmonically complex and dynamic textures.
The analog filter section is a 4-pole resonant low-pass design, updated with bass compensation to preserve low-end energy when resonance is increased. This means you can push the resonance without losing power in the bottom end, making the filter more usable across a wider range of tones. The result is an instrument that feels both familiar and modern, capable of smooth vintage tones or more aggressive contemporary sounds.
One of the standout features of the Fourm is its 37-note slim-key keyboard with polyphonic aftertouch. Unlike traditional aftertouch systems that respond to pressure across the entire keyboard, polyphonic aftertouch responds to pressure on each individual note. This allows for incredibly detailed performance expression, such as applying vibrato to one note while holding another steady, or swelling certain notes in a chord without affecting the rest.
This level of control opens up new playing techniques and adds a layer of expression that is rarely found in compact analog synthesizers. Whether you are performing solo melodies or chordal textures, the Fourm responds to every nuance of your touch, bridging the gap between keyboard and instrument in a truly expressive way.
The modulation matrix on the top panel of the Fourm draws inspiration from the legendary Pro-One, offering a hands-on and immediate approach to sound design. Instead of digging through menus, you can route modulation sources to destinations directly on the panel. Visual feedback is provided through colour-coded indicators, making it easy to see how each element of your patch is interacting in real time.
You can assign envelopes, LFOs, aftertouch, velocity and more to parameters like filter cutoff, oscillator pitch or wave shape. This setup allows you to build evolving, dynamic patches quickly, with a focus on creativity and playability. The intuitive layout encourages experimentation and keeps your attention on the sound, not the screen.
Despite its small size, the Fourm is housed in a rugged steel chassis that feels solid and professional. The layout is clean, with a knob-per-function design that keeps every control within easy reach. It includes 128 factory presets that cover a wide range of sounds, from vintage leads and lush pads to evolving textures and percussive sequences. These can be used as-is or serve as starting points for your own creations.
An onboard arpeggiator with sequencer mode adds rhythmic and melodic variation, making Fourm suitable for standalone use or integration into larger setups. You can trigger patterns, tweak sequences and interact with your sounds in real time. This makes Fourm not just a studio tool, but a performance-ready instrument.
Fourm is equipped with MIDI In, Out, and Thru ports, as well as USB for bi-directional MIDI communication with your computer or DAW. It also includes a 1/4-inch mono main output and a separate headphone output for private monitoring. An expression pedal input allows for real-time control of parameters such as filter cutoff or volume, adding yet another layer of interaction.
Power is supplied via an included 12V DC adapter, and the unit features a dedicated power switch. With a maximum power consumption of just 14 watts, it is efficient and easy to integrate into any workspace or live rig. Whether you are in the studio, on stage or on the move, the Fourm provides a powerful and expressive synthesis experience in a highly portable form.
Any electrical items in your order may have been designed to work with a 240V circuit, using a United Kingdom G type plug connection or a 220V circuit, using an EU plug connection. An adapter or transformer may be required for these items to work properly and safely in your country. Some items work with a range of voltages, or have a switchable voltage control built in. Please refer to the specific product details for further information.
