AudioFu Chart · November 2026
Best Envelope Modules Under $300 2026
The top pick is Doepfer A-140 ADSR Envelope Generator ($73). Doepfer A-143-1 Quad Complex Envelope Generator / LFO leads the high end. Ranked by the AudioFu Index from 38 models across 16 brands, prices checked every night.
Last updated: November 4, 2026
Top 10
Full detail for the 10 highest AudioFu Index scores. Every other model is listed below.
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The A-140 is a foundational Doepfer module, and for good reason. It's a workhorse ADSR, simple to use, and delivers that classic Eurorack character. Perfect for beginners getting into modular synthesis or seasoned veterans needing a reliable, compact envelope generator.
Pros
- Classic Doepfer build quality: robust, reliable, and durable.
- Versatile ADSR shaping for a wide range of modulation tasks.
- Retrigger functionality allows for complex, evolving sounds.
Cons
- Limited parameter control compared to modern envelope modules.
- Older design lacks the finesse of later Doepfer revisions.
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The Z4000 NS is a seriously versatile envelope generator. The dual-range potentiometers give you amazing control, from snappy transients to long, evolving textures. This is a fantastic addition for anyone looking to inject dynamic movement into their modular patches – especially those who want precise, nuanced control.
Pros
- Dual-range pots offer incredible precision at all speeds
- Attack slope switch expands sound design possibilities significantly
- Flexible output scaling and inversion adds creative modulation options
Cons
- Power draw is relatively high for a single module
- Limited CV outputs restrict complex envelope shaping
75AudioFu
IndexStableno change since Aug 17Aug 17$196 now$196€175 at Thomann · in stockCheck price ↗ -
Endorphin.es Airstreamer 4 Eurorack Synth Module
Airstreamer 4 Silver · Endorphin.es
10 for sale on Reverb2 finishes at Thomann
The Airstreamer 4 Silver is a surprisingly powerful little envelope module. It’s a great option for Eurorack users needing a compact, flexible ADSR that doesn't sacrifice sound quality – perfect for those building smaller systems or needing a secondary envelope for modulation duties.
Pros
- Super compact 4HP form factor maximizes precious rack space.
- Silver faceplate elevates aesthetics, feels premium to the touch.
- Flexible 'Characteristic' switch offers nuanced envelope shaping.
Cons
- Limited number of parameters compared to more complex envelope modules.
- Bipolar VCA CV input range might require attenuation in some systems.
74AudioFu
IndexStableno change since Aug 17Aug 17$200 now$200€179 at Thomann · in stockCheck price ↗ -
The A-141-4 is a workhorse for any modular setup needing polyphonic envelopes. It’s a classic Doepfer design, delivering reliable, hands-on control and a distinct, slightly vintage sound—perfect for sound designers and those wanting to create evolving textures and rhythmic sequences.
Pros
- Excellent polyphonic envelope shaping capabilities for complex textures
- Doepfer's signature robust build quality; feels solid and dependable
- CV control over all parameters offers incredible modulation flexibility
Cons
- 8HP footprint can be restrictive in smaller Eurorack cases
- Limited range of envelope shapes compared to more modern modules
66AudioFu
IndexStableno change since Aug 17Aug 17$178 now$178€159 at Thomann · in stockCheck price ↗ -
Doepfer A-143-1 Quad Complex Envelope Generator / LFO
A-143-1 · Doepfer
6 for sale on Reverb1 finish at Thomann
The A-143-1 is a workhorse for classic, percussive sounds and evolving textures. It’s a solid choice for those diving into modular synthesis, especially those wanting a reliable, no-frills envelope solution; it’s a bit more straightforward than some of the newer, more complex offerings but gets the job done beautifully.
Pros
- Excellent timing resolution for complex, evolving envelopes
- Four independent AD generators maximize patching flexibility
- Robust Doepfer build quality ensures long-term reliability
Cons
- Limited modulation input compared to more modern envelope modules
- Steeper learning curve for intricate envelope shaping
66AudioFu
IndexStableno change since Aug 17Aug 17$244 now$244€218 at Thomann · in stockCheck price ↗ -
The Rampage is a seriously versatile module for sound designers and experimental musicians. It's not a beginner's module, but if you're looking for a compact powerhouse to shape complex envelopes, generate quirky LFOs, or create intricate rhythms, this will become a core element in your patch. It's a great value for the depth of functionality it provides.
Pros
- Dual-channel design offers exceptional routing flexibility and creative possibilities.
- Faders provide intuitive, real-time control over rise and fall times.
- Logic section expands utility, generating complex gate signals for sequencing.
Cons
- 18HP footprint can be restrictive in smaller Eurorack cases.
- The learning curve is steeper than simpler envelope modules; requires study.
62AudioFu
IndexStableno change since Aug 17Aug 17$278 now$278€249 at Thomann · in stockCheck price ↗ -
The A-142-4 is a solid, no-frills quad decay module perfect for creating percussive sounds, rhythmic pulses, or adding simple envelope shaping to multiple destinations. It's a workhorse for anyone building a foundational modular system and wanting reliable, predictable decay times without complex features. This is ideal for experimental electronic music or adding a subtle rhythmic element to ambient patches.
Pros
- Reliable Doepfer build quality ensures long-term stability.
- Four independent decay envelopes offer flexible routing options.
- Manual decay time control provides precise, repeatable shaping.
Cons
- 8HP footprint can be restrictive in smaller racks.
- Limited attack and sustain stages restrict tonal versatility.
60AudioFu
IndexStableno change since Aug 17Aug 17$117 now$117€105 at Thomann · in stockCheck price ↗ -
This tiny envelope module is perfect for those who need precise control in a small footprint. The ability to select different parameter combinations via jumpers makes it surprisingly flexible for modern patching. It works great as a standalone unit or for driving other synths with its gate and retrigger inputs.
Pros
- Bipolar attenuator lets you shape multiple parameters at once
- Retrigger input enables complex rhythmic envelope programming
- Compact 40 mm depth saves valuable rack space
Cons
- Only one output channel limits routing options
- No dedicated CV output for controlling external gear
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The A-140-2 is a dependable workhorse for foundational envelope duties. It's a classic for a reason—simple, reliable, and delivers that vintage Doepfer character. Perfect for beginners exploring modular synthesis or experienced users needing a solid, no-frills envelope pair.
Pros
- Rock-solid Doepfer build quality ensures long-term reliability
- Flexible CV input with attenuator offers nuanced modulation
- Fast attack times enable percussive envelope shaping
Cons
- Limited modulation destinations compared to more complex envelopes
- Voltage range of 0-10V might require level shifting in some systems
58AudioFu
IndexStableno change since Aug 17Aug 17$155 now$155€139 at Thomann · in stockCheck price ↗ -
The Contour 1 is a brilliant little workhorse for Eurorack systems. Its ability to morph between envelope shapes and function as a basic VCO makes it incredibly flexible for sound design and sequencing. It’s a fantastic choice for modular beginners or anyone wanting a compact, characterful envelope option.
Pros
- Highly versatile module, functioning as multiple utilities
- Joranalogue’s signature smooth, musical slew shaping
- Excellent CV response for nuanced envelope sculpting
Cons
- Limited modulation destinations compared to larger envelopes
- 8HP can feel cramped for complex patching scenarios
57AudioFu
IndexStableno change since Aug 17Aug 17$218 now$218€195 at Thomann · in stockCheck price ↗
All 38 envelope modules
Same index, same nightly prices — compact. Colour options of one model share a row. Tap a photo to zoom.
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Behringer 140 Dual Envelope/LFO Eurorack Synthesizer Module140 Dual Envelope/LFO · Behringer56Stable$44€39$44€39Check ↗
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Behringer Abacus Eurorack ModuleAbacus · Behringer56Stable$55€49$55€49Check ↗
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Cre8Audio Function Junction Eurorack Synthesizer ModuleFunction Junction · cre8audio54Stable$211€189$211€189Check ↗
- 14
Tiptop Audio Buchla Model 230tTiptop Audio53↓ 15.9%$178€159$178€159Check ↗
- 15
Erica Synths EG2 ModuleBlack EG2 · Erica Synths51Stable$189€169$189€169Check ↗
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Doepfer A-142-6 1UDoepfer50Stable$77€69$77€69Check ↗
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Doepfer A-142-1Doepfer50Stable$95€85$95€85Check ↗
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Doepfer A-142-5 1UDoepfer50Stable$99€89$99€89Check ↗
- 19
Doepfer A-171-2Doepfer50Stable$139€124$139€124Check ↗
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Doepfer A-141-2Doepfer50Stable$177€158$177€158Check ↗
- 21
Befaco VC ADSR Eurorack Synthesizer ModuleVC ADSR · Befaco50Stable$200€179$200€179Check ↗
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Doepfer A-143-2Doepfer50Stable$256€229$256€229Check ↗
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Behringer 1033 Dual Envelope Generator Eurorack ModuleDual Envelope Generator 1033 · Behringer48Stable$42€38$42€38Check ↗
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Behringer Dual Envelope Generator 1003Behringer47↓ 3.0%$36€32$36€32Check ↗
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Schlappi Engineering BoundarySchlappi Engineering46↓ 4.2%$256€229$256€229Check ↗
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4ms Mini PEG4ms45Stable$162€145$162€145Check ↗
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4ms EnvVCA4ms45Stable$173€155$173€155Check ↗
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Tiptop Audio Buchla Model 281tTiptop Audio45Stable$245€219$245€219Check ↗
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4ms Dual EnvVCA4ms45Stable$278€249$278€249Check ↗
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NANO Modules SERRANANO Modules44Stable$151€135$151€135Check ↗
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NANO Modules QUARTNANO Modules44Stable$179€160$179€160Check ↗
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NANO Modules ARCNANO Modules44Stable$252€225$252€225Check ↗
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Behringer 911 Envelope Generator Eurorack Synthesizer Module911 Envelope Generator · Behringer42Stable$37€33$37€33Check ↗
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Weston Precision Audio SE1 Shaped VC EnvelopeWeston Precision Audio42↓ 2.0%$218€195$218€195Check ↗
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Rides In The Storm FEGRides In The Storm41Stable$84€75$84€75Check ↗
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Vostok Instruments FujiVostok Instruments41Stable$221€198$221€198Check ↗
- 37
Cosmotronic Delta-VCosmotronic41Stable$256€229$256€229Check ↗
- 38
Shakmat Modular Triple SteepleShakmat Modular41Stable$290€259$290€259Check ↗
Envelope Modules by the numbers
Measured across all 42 models we track, not a sample.
Median $178 — half of all envelope modules here cost less.
How to choose the best envelope modules
Attack/Decay Range
A wider range gives you more flexibility for everything from snappy percussive sounds to slow, evolving pads. Cheap envelopes often have limited range, making it hard to dial in subtle nuances.
Curve Control
Look for an envelope that lets you shape the attack and decay curves-exponential, linear, or even something more complex. This is what separates a bland envelope from one that can really breathe with your sound.
Trigger Modes
Does it offer retriggering, looping, or other trigger options? These can be crucial for creating complex rhythmic patterns and textures beyond simple ADSR.
Output Scaling/Offset
Being able to adjust the output amplitude and offset is vital for ensuring the envelope's signal integrates well with other modules without clipping or being too quiet. A lack of this can lead to constant gain-staging headaches.
Stability/Drift
Cheaper components can lead to voltage drift over time, especially in warmer environments. This manifests as subtle (or not so subtle) changes in the envelope's shape, which is a real pain in the long run.
Buying guide
So, you're diving into modular and need a solid envelope generator - smart move. They're the backbone of so much movement and character in your patches. Finding a good one that doesn't drain your bank account can be tricky, but there are some serious contenders under $300. Let's break down what you should be looking for and which modules deliver the most bang for your buck.
At this price point, you're going to encounter some trade-offs. The absolute fastest attack times or the smoothest curves might be missing, and the build quality might not be as rock-solid as a Eurorack behemoth. Focus on modules with good curve control - that's where you'll get the most expressive results.
Don't chase the absolute cheapest; a slightly more expensive module with better components and more features will likely save you frustration down the road.
How the AudioFu Index works
Five measured signals and nothing else — no stars from strangers, no “tested by experts” we didn’t do. The weights are fixed and public. We don’t play these instruments; we measure the market around them.
This chart covers 42 envelope modules from the Thomann catalogue. Before you buy, read hands-on reviews and, where you can, play it. Full methodology.
AudioFu earns a commission when you buy through our Thomann links. It never changes the order — the index does.
- Demand40%
How many of this exact model are for sale on Reverb right now — what musicians actually buy and resell.
- Lineup20%
How many finishes Thomann stocks — makers expand the models that sell.
- Price15%
Where the price has moved since we started tracking in August.
- Specs15%
How completely the maker documents it.
- Maker10%
How deep the brand’s range is in this category.
Questions
What's the difference between an ADSR and an AHDSR?
ADSR (Attack, Decay, Sustain, Release) is the classic. AHDSR (Attack, Hold, Decay, Sustain, Release) adds a 'Hold' stage, which can be useful for creating more complex, layered sounds or preventing clicks at the beginning of a note. It's not a huge deal, but can offer more flexibility.
Can I use an envelope module to control filter cutoff?
Absolutely! That's a hugely common use. Just make sure the envelope's output signal is within the filter's CV input range. You might need an attenuator to scale it down.
What does 'retriggering' mean?
Retriggering means the envelope will restart whenever it receives a new trigger signal, even if it's still in its decay or release phase. Great for creating stuttering effects or complex rhythmic patterns.
Is a module with fewer knobs necessarily worse?
Not always. Simplicity can be a virtue. A module with fewer controls can be easier to dial in quickly, especially for live performance. It's about finding something that fits your workflow.
I'm new to modular, what's the most important feature to look for?
Versatility. A module that offers a good range of attack/decay times and some basic curve shaping will get you the furthest. Don't get bogged down in fancy features you won't use.





