AudioFuAudioFu Chart · October 2026
Best Noise Modules 2026
The top pick is Doepfer A-118 Noise and Random Voltage Generator ($77). Behringer 903A Random Signal Generator Eurorack Synthesizer Module gives you the most for the money at $21. Verbos Electronics Random Sampling leads the high end. Ranked by the AudioFu Index from 12 models across 8 brands, prices checked every night.
Last updated: October 15, 2026
Narrow the chart
All Noise ModulesTop 10
Full detail for the 10 highest AudioFu Index scores. Every other model is listed below.
-
Doepfer A-118 Noise and Random Voltage Generator
A-118 Noise/Random · Doepfer
12 for sale on Reverb2 finishes at Thomann
The A-118 is a workhorse noise module, pure and simple. It’s fantastic for creating evolving textures, subtle rhythmic modulation, and adding a bit of unpredictable character to your patches. Perfect for experimental sound designers and those wanting a reliable, budget-friendly noise source in their Eurorack.
Pros
- Classic Doepfer build quality: robust, reliable, and feels very solid.
- Versatile noise generation: white, coloured, and genuinely useful random voltage.
- Low-frequency random voltage ideal for subtle modulation and rhythmic patterns.
Cons
- Limited control compared to more advanced noise modules.
- Power draw could be a factor in systems with limited power supplies.
-
The Random Sampling is a rabbit hole of evolving textures and rhythms – a brilliant noise source for experimental sound design and generative music. It’s perfect for adventurous modular users who want to escape predictable patterns and create truly unique sonic landscapes. Be prepared to spend some time learning its nuances, but the rewards are well worth it.
Pros
- Generates truly unpredictable and evolving textures.
- Shift register provides complex, cascading rhythmic patterns.
- Multiple noise outputs offer diverse sonic palettes for experimentation.
Cons
- Can be overwhelming for beginners due to its complexity.
- Limited modulation destinations compared to some rivals.
67AudioFu
Index↓ 1.4%since Aug 14 · lowest so far$783 · Aug 14$771 now$771€689 at Thomann · in stockCheck price ↗ -
Behringer 903A Random Signal Generator Eurorack Synthesizer Module
903A Random Signal Generator · Behringer
3 for sale on Reverb1 finish at Thomann
This little Behringer 903A is a seriously useful addition to any Eurorack setup, especially if you're on a tight budget. It’s a workhorse for generating basic noise textures, great for beginners exploring sound design or experienced modular users needing a reliable, compact noise source. It’s not going to blow your mind with exotic sounds, but it’s a solid foundation for experimentation.
Pros
- Excellent value for a functional analogue noise source
- Pink noise implementation is surprisingly smooth and musical
- Compact 4HP footprint saves precious rack space
Cons
- Construction feels a little plasticky, typical of the price point
- Limited output level control; can be quite loud
65AudioFu
Index↓ 44.1%since Aug 14 · lowest so far$38 · Aug 14$21 now$21€19 at Thomann · in stockCheck price ↗ -
The A-118-2 is a surprisingly capable noise generator for the price. It’s a great starting point for anyone dipping their toes into modular synthesis or needing a compact, reliable source of random elements – perfect for generative patches, percussive textures, or subtle modulation. The random voltage output is particularly useful for adding unpredictable movement.
Pros
- Excellent noise quality, surprisingly clean and usable.
- Versatile random voltage output with useful level control.
- Track/Hold and Sample/Hold modes offer creative modulation.
Cons
- Limited noise color shaping compared to more expensive modules.
- The level control can be a bit fiddly with fast changes.
61AudioFu
Index↓ 5.9%since Aug 14 · lowest so far$95 · Aug 14$90 now$90€80 at Thomann · in stockCheck price ↗ -
Befaco Noise Plethora Eurorack Synthesizer Module
Noise Plethora · Befaco
4 for sale on Reverb1 finish at Thomann
The Noise Plethora is a seriously creative noise source. It's fantastic for sound designers and experimental musicians wanting a wide palette of textures, especially if you like that slightly gritty, filtered character from the OTA filters. This is a really useful module if you’re looking to add a lot of texture without taking up tons of rack space.
Pros
- Versatile noise algorithms offer surprising textural complexity.
- OTA filters provide a warm, characterful shaping of the noise.
- Individual channel control fosters intricate sound design possibilities.
Cons
- The digital nature can lack the organic feel of purely analog noise.
- Algorithm selection lacks a direct visual display of the current setting.
58AudioFu
IndexStableno change since Aug 14Aug 14$385 now$385€344 at Thomann · in stockCheck price ↗ -
The A-117-2 is a workhorse noise module – simple, reliable, and sounds great. It’s a fantastic starting point for anyone exploring noise generation in Eurorack, or a useful utility for experienced users needing a compact, flexible noise source. Its clean digital character is surprisingly versatile.
Pros
- Excellent noise quality, surprisingly rich and textured for a digital module.
- Wide frequency range (50-40kHz) allows for subtle to harsh noise.
- Compact 4HP footprint makes it ideal for dense modular setups.
Cons
- Limited output options; bipolar/unipolar can restrict certain patching scenarios.
- Relatively basic functionality compared to more complex noise generators.
51AudioFu
Index↓ 3.7%since Aug 14 · lowest so far$92 · Aug 14$88 now$88€79 at Thomann · in stockCheck price ↗ -
This little Behringer module is a seriously clever way to inject chaos into your Eurorack system. It’s perfect for experimental sound designers, ambient artists, or anyone looking to add unpredictable textures without a huge investment. The noise and random voltage generation are surprisingly versatile for the size and price.
Pros
- Excellent noise source for textural soundscapes
- Random voltage generators add unpredictable movement
- Tiny footprint (14HP) maximizes modular space
Cons
- Plastic construction feels less robust than higher-end modules
- Limited control beyond basic level and attenuation
-
The Noise Random Tools is a fantastic little utility for adding subtle or chaotic movement to your patches. It's a great starting point for anyone exploring random voltage generation, or a useful addition for seasoned modular users needing a compact noise source and simple shaping tools. It's a budget-friendly way to add a lot of character.
Pros
- Excellent pink noise provides smooth, organic textures.
- Sample & Hold circuit adds dynamic variation and rhythmic possibilities.
- Slew limiter shapes random signals for controlled evolution.
Cons
- Limited noise type options compared to more expansive modules.
- Slew limiter’s range can feel restrictive for extreme shaping.
45AudioFu
IndexStableno change since Aug 14Aug 14$128 now$128€114 at Thomann · in stockCheck price ↗ -
The Flurry is a wonderfully dense and versatile noise module. It's ideal for experimental sound designers and those who want a compact, powerful source of rhythmic and textural chaos, blending analog grit with digital precision. It's a brilliant little workhorse for adding movement and unpredictable elements to any modular patch.
Pros
- Exceptional noise palette offers diverse textures, from granular to harsh.
- The slew limiter's envelope follower mode is surprisingly musical and useful.
- Internal square wave generator provides a solid foundation for rhythmic complexity.
Cons
- Power draw of 116mA can be significant in densely populated racks.
- The learning curve can be steep for those unfamiliar with complex modulation.
45AudioFu
IndexStableno change since Aug 14Aug 14$301 now$301€269 at Thomann · in stockCheck price ↗ -
The VCNO is a seriously characterful noise module; it's not a general-purpose solution, but if you're into granular textures and experimental sound design, especially glitchy percussion and evolving drones, it's a fantastic addition to your rack. It's perfect for sound designers and noise-focused modular enthusiasts seeking a unique sonic palette.
Pros
- Unique 'Sizzle' output adds complex harmonic textures.
- DC-coupled gate output enables intricate rhythmic possibilities.
- Compact 6U width maximizes modular space efficiency.
Cons
- Limited noise type variety compared to dedicated noise generators.
- Power draw, while not excessive, can strain smaller power supplies.
42AudioFu
IndexStableno change since Aug 14Aug 14$193 now$193€172 at Thomann · in stockCheck price ↗
All 12 noise modules
Same index, same nightly prices — compact. Colour options of one model share a row. Tap a photo to zoom.
Noise Modules by the numbers
Measured across all 14 models we track, not a sample.
Median $128 — half of all noise modules here cost less.
How to choose the best noise modules
Noise Types
Some modules offer a single, basic white noise. Others give you pink, red, filtered, textured, or even granular options. A wider palette lets you create more complex sounds - pink noise is gentler, red noise is warmer and bass-heavy, and filtered noise can be surprisingly musical.
Modulation Inputs
Look for modules with multiple modulation inputs (FM, amplitude, filter). This is where the real fun begins - using LFOs, envelopes, or sequencers to shape the noise into something dynamic and evolving. Static noise is boring; modulated noise is a playground.
Output Level & Range
A weak signal requires more gain elsewhere, which can introduce noise of its own. A good module will have a healthy output level without clipping easily, and a wide dynamic range to handle both subtle textures and aggressive bursts.
Filtering Options
Built-in filtering is a huge bonus. A resonant low-pass filter on your noise source can instantly transform it into a convincing bass drum or a swirling pad. Some modules offer multiple filter types for even more versatility.
Coloration/Character
Some noise modules strive for clinical purity, while others add their own sonic fingerprint. This might be a subtle saturation, a slight distortion, or a unique filtering characteristic - it's what separates a generic noise source from something truly inspiring.
Buying guide
Alright, let's talk noise. Seriously. In modular synthesis, a good noise module isn't just random hiss - it's the foundation for textures, percussion, and all sorts of sonic weirdness. It's the grit that separates a sterile patch from something that actually feels alive. Whether you're crafting cinematic soundscapes or just want a better snare drum, a quality noise module is essential.
Don't fall for the trap of thinking more features automatically equals better sound. A simple, well-designed noise module can be just as powerful as a complex one. Cheaper modules often cut corners on component quality, resulting in a thinner, harsher noise signal.
Spend a little more for a module that has a good signal-to-noise ratio and a satisfying sonic character - it'll pay off in the long run.
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 14 noise 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 white, pink, and red noise?
White noise is evenly distributed across all frequencies - think static. Pink noise reduces the high-frequency content, making it sound warmer. Red noise goes even further, emphasizing the low frequencies for a very bass-heavy sound.
Can I use a noise module for percussion?
Absolutely! With the right filtering and modulation, a noise module can be the heart of a surprisingly realistic drum kit. Layering different noise sources can also create unique percussive textures.
What does 'modulated noise' mean?
It means you're using an LFO, envelope, or other signal to change the characteristics of the noise - its pitch, volume, or timbre - over time. This adds movement and interest.
Is a dedicated noise module necessary if I already have a sample-based synth?
It depends. Sample-based synths can emulate noise, but a dedicated module offers a more organic and unpredictable quality. Plus, the modulation possibilities are often more flexible with modular noise sources.
My noise module sounds really harsh - what's wrong?
It's likely the noise type or the filtering. Try using pink or red noise instead of white, or add a low-pass filter to tame the high frequencies. Also, check your gain staging - too much gain can amplify unwanted noise.
