Intellijel Quadra

$271.33 Price Tier: Standard

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Page last updated Jun 11, 2026

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5.0 (1)

$271.33 3 available Used

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Average Price: $271

Standard/Professional

$149

$350+

Price Tier

In the Modular Synthesizers category, Intellijel Quadra is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

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Description

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The Intellijel Quadra is your key to unlocking a new realm of sonic potential in the modular synthesizer universe. This versatile module boasts four independent envelope generators, each offering three distinct modes: Attack-Decay (AD), Attack-Hold-Release (AHR), and a looping mode for infinite sustain. With the ability to switch between linear and exponential rates, the Quadra lets you shape your sound with precision and creativity.

Designed for musicians who crave flexibility, each envelope can be individually triggered, providing a dynamic range of sound modulation. Whether you're crafting sharp, punchy rhythms or smooth, evolving soundscapes, the Quadra adapts seamlessly to your artistic vision. The looping mode transforms each envelope into a low-frequency oscillator, exponentially expanding your creative toolkit.

Perfect for both live performances and studio sessions, the Quadra’s intuitive layout ensures ease of use without sacrificing depth. Its compact design fits effortlessly into any modular setup, making it an essential addition for both seasoned synth enthusiasts and newcomers alike.

Key Features:

Four independent envelope generators
Three modes: Attack-Decay (AD), Attack-Hold-Release (AHR), and Looping
Linear and exponential rate options
Individual trigger inputs and outputs for each envelope
Compact and user-friendly design, ideal for any modular setup

Product specs

Brand	Intellijel
Model	Quadra Quad Function / Envelope Generator Eurorack Synth Module
Finish	Silver
Year	2013 - 2019
Made In	Canada
Categories	Eurorack Modules and Cases, Synth Modules
Horizontal Pitch	12HP
Modular Synth Format	Eurorack
Synth Module Function	Envelope, LFO

FAQs

What is the primary function of the Intellijel Quadra module?: The Intellijel Quadra is a quad function generator designed for Eurorack modular synthesizers, capable of producing envelope and low-frequency oscillator (LFO) signals.
How many channels does the Intellijel Quadra offer?: The Intellijel Quadra offers four independent channels, allowing for versatile modulation and envelope shaping within a modular synth setup.
Can the Intellijel Quadra be used as an LFO?: Yes, the Intellijel Quadra can function as an LFO, providing low-frequency oscillations for modulating various parameters in a modular synth system.
What is the horizontal pitch size of the Intellijel Quadra?: The Intellijel Quadra has a horizontal pitch size of 12HP, making it a compact addition to any Eurorack setup.
Is the Intellijel Quadra compatible with other Eurorack modules?: Yes, the Intellijel Quadra is designed to be fully compatible with other Eurorack modules, integrating seamlessly into a modular synthesizer system.

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Intellijel Quadra.

Features and functionality

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The Quadra module allows for complex envelope shaping, but its expander enables voltage control of attack and decay, offering more advanced configurations like quadrature mode.
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Users note that without the expander, creating an ADSR envelope requires a mixer with attenuation to manage the ASR and AD signals effectively.
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Quadrax can function as a Quad Wavetable VCO, providing a complex VCO, an envelope, and an LFO simultaneously with attenuation/modulation control via 4 CV inputs.
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Use cases and applications

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The Quadra is praised for its versatility in modular setups, especially when combined with a Maths module, as it extends patching possibilities significantly.
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Quadrax is highly recommended for users lacking envelope generators, providing a solution with versatile modulation options.
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Mods and upgrades

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Adding the Quadra expander is highly recommended by owners for those with available HP space, enhancing the module's capability with additional outputs and control features.
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Setup and maintenance

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Issues with power connection may cause LED and signal problems; ensuring a firm connection could resolve these.
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Persistent issues on specific Quadra channels may require manufacturer support for resolution.
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User experience

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Some users experience persistent LED activation and crackling noise on specific channels, potentially indicating internal issues.
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Owners appreciate the clear UI of Quadrax for quick adjustments, contrasting with the more cryptic interface of Make Noise modules, which often require manual reference.
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Comparisons

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In smaller setups around 60HP, Quadrax is favored over Maths due to its compact size and ability to offer multiple traditional envelopes and LFOs.
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Maths excels with analog CV/analog functions, while Quadrax offers digital flexibility, making each suitable for different workflow preferences.
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