SEQUENTIAL SEQ-3900 Fourm Keyboard Analog Synthesizer 37-KEY

( Brand: Sequential ), ( Model: FOURM ), ( Mpn Value Default: Does Not ), ( Type: Keyboard Synthesizer ), ( Manufacturer Part Number: SEQ-3900 )

Review SEQUENTIAL Fourm Compact 37-key Keyboard Analog Synthesizer

The Sequential Seq-3900 Fourm is an exquisite 37-key analog synthesizer that embodies the essence of classic sound design. Its design is a modern reinterpretation of the legendary Prophet-3, offering a unique blend of vintage character and contemporary features.

The heart of this synthesizer lies in its triple voltage-controlled oscillators (VCOs), each capable of generating a wide range of waveforms from sawtooth and square to pulse and sine. These oscillators can be synchronized to each other or operated independently, providing an immense palette of timbres.

The Seq-3900 Fourm boasts a versatile voltage-controlled filter section. This 4-pole, 12dB/octave low-pass filter can self-oscillate, adding an extra layer of sonic exploration. The filter offers both high-pass and band-pass modes, allowing for a wide range of tonal shaping.

This synthesizer comes with an intuitive 32-step sequencer, which can store and recall up to 16 sequences. The sequencer features a user-friendly interface with per-step controls for note entry, velocity, and gate length. Additionally, it includes a randomize function, making it easy to generate intricate and unconventional sequences.

The Seq-3900 Fourm also features an arpeggiator with multiple modes, including up, down, and alternating. This feature can be synced to the master tempo, providing an effortless way to create evolving, rhythmic patterns.

This analog synthesizer includes a patchable modular section, allowing for extensive signal routing and processing. With 111 patch points, you can build intricate and complex modular synth setups, opening up a world of sonic possibilities.

The Seq-3900 Fourm comes equipped with a sleek, intuitive interface. Its high-resolution OLED screen displays all the essential information, while the tactile, semi-weighted 37-key keyboard provides an authentic playing experience. The synthesizer also offers MIDI I/O, USB MIDI, and CV/Gate I/O, making it easy to integrate into various studio setups.

In summary, the Sequential Seq-3900 Fourm 37-key keyboard analog synthesizer is a powerful and expressive instrument, perfect for sound designers, producers, and performers seeking a unique and versatile analog sound source. Its vintage character, combined with its modern features, makes it a must-have for any serious synth enthusiast.

The Sequential Seq-3900 is a 37-key analog synthesizer and sequencer that has gained popularity among musicians and synthesizer enthusiasts for its unique features and classic analog sound. Here are some pros and cons that might help you make an informed decision about purchasing this synthesizer:

1. Authentic Analog Sound: The Seq-3900 uses a Voltage Controlled Oscillator (VCO), Voltage Controlled Filter (VCF), and Voltage Controlled Amplifier (VCA) to generate sounds that are characteristic of classic analog synthesizers.

2. Sequencer Functionality: The Seq-3900 comes with a built-in 32-step sequencer that allows you to record and play back sequences for your synth sounds.

3. polyphonic Capability: This synthesizer is polyphonic, which means that you can play multiple notes at once. This capability expands the creative possibilities of the instrument.

4. Patchable Modular Synthesis: The Seq-3900 features a patchable modular synthesis design, which allows for extensive sound customization and experimentation.

5. MIDI and CV/Gate I/O: The synthesizer has MIDI and CV/Gate Input/Output options, making it compatible with a wide range of external devices and controllers.

1. Learning Curve: Due to its complex and modular design, the Seq-3900 might take some time to learn and master.

2. Size and Weight: The synthesizer is relatively large and heavy, which might be a concern for those who plan to transport it frequently.

3. Price: The Seq-3900 is a high-end synthesizer, and its price reflects its advanced features and capabilities.

4. Limited Connectivity: Although the Seq-3900 has MIDI and CV/Gate I/O, it does not have built-in USB connectivity, which might be a drawback for those who prefer a more modern and universal connectivity option.

In conclusion, the Sequential Seq-3900 is an excellent investment for musicians and synthesizer enthusiasts who are looking for a high-quality, polyphonic analog synthesizer with sequencer functionality and extensive sound customization options. Its classic analog sound, patchable modular design, and compatibility with external devices make it a versatile and powerful instrument. However, its learning curve, size, weight, and high price might be a concern for some. Ultimately, the decision to purchase the Seq-3900 depends on your individual needs, preferences, and budget.

If you are a serious musician or synthesizer enthusiast with a good understanding of analog synthesis and a desire for a high-quality, polyphonic instrument with sequencer functionality, the Sequential Seq-3900 is definitely worth considering. However, if you are a beginner or have limited resources, you might want to consider a more entry-level or budget-friendly synthesizer or digital workstation. Additionally, if you prioritize ease of use, portability, and a lower price point, you might want to explore digital synthesizers with more modern connectivity options.

part # seq3900 prices

• $900.00-$999.99

specifications synthesasha:

• brand: Sequential
• model#: FOURM
• mpn value default: Does Not
• type: Keyboard Synthesizer
• manufacturer part number: SEQ-3900

general synthesasha:

• condition: New
• Musical Instruments Gear > Pro Audio Equipment > Synthesizers

returns synthesasha:

• time: 30 Days
• policy: Returns Accepted
• method: Money back
• paid by: Buyer

payments synthesasha:

• credit card: Discover
• other
• wallet: Google-pay

offer synthesasha:

• sold: 0
• quantity: 5
• availability: In Stock
• started: October 16, 2025
• options: Ship-to-home

shipping synthesasha:

• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery
• class: Standard
• transit: 2-6 Days
• type: Fixed
• cost: $0.00

seller synthesasha:

• # reviews: 6157
• rating: 99.3%

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