AudioFu Chart · November 2026
Best Noise Modules Under $500 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. Ranked by the AudioFu Index from 11 models across 7 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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Doepfer A-118 Noise and Random Voltage Generator
A-118 Noise/Random · Doepfer
11 for sale on Reverb2 finishes at Thomann
This is a noise and random voltage module. It gives you white noise and coloured noise, which you can use as audio, and random voltage, which is mostly used to control other parts of your setup. It suits you if you want a small 8HP module with knobs to set how fast and how strong the random voltage changes, and LEDs that show what it is doing.
Pros
- Generates white noise, coloured noise, and random voltage from one module
- Noise works as an audio signal or as a control voltage
- Knobs set the rate of change and amplitude of the random voltage
Cons
- Random voltage is mainly used as a control voltage, given its low frequency content
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Behringer 903A Random Signal Generator Eurorack Synthesizer Module
903A Random Signal Generator · Behringer
4 for sale on Reverb1 finish at Thomann
This is a small analogue noise module with two outputs, one for white noise and one for pink noise. At 4 HP wide, it takes up little space in a Eurorack case. It suits you if you want a simple, budget-friendly noise source for your modular setup.
Pros
- Analogue noise generator, so the noise is made by analogue circuitry
- Two separate outputs, one for white noise and one for pink noise
- Compact 4 HP width fits easily into a small Eurorack case
Cons
- Generates only white and pink noise, with no other noise types listed
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You get a noise and random voltage module that takes up just 4 HP. It gives you white noise, coloured noise that you can mix in, and a random voltage output with its own level control. You can switch it between Track & Hold and Sample & Hold, so it suits anyone building Eurorack patches who wants random sources to play with.
Pros
- Outputs white noise, giving you a hiss source to start patches
- Coloured noise output can be mixed with white noise in your chosen proportions
- Continuous random voltage output comes with its own level control
Cons
- Needs +12 V and -12 V power, drawing 20 mA on each rail
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Befaco Noise Plethora Eurorack Synthesizer Module
Noise Plethora · Befaco
3 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.
54AudioFu
IndexStableno change since Aug 17Aug 17$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.
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You get two noise sources that switch between white and pink, plus two random voltage generators, all in one 14 HP Eurorack module. This suits you if you build a modular rig and want sources for random voltages or noise signals. Check that your case can supply +12 V at 45 mA and -12 V at 15 mA before you buy.
Pros
- Two independent noise generators, each with a selector for white or pink noise
- Each noise generator has its own level control with a maximum of plus or minus 5 V
- Two random voltage generators, each with its own attenuator and on/off switch
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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 17Aug 17$301 now$301€269 at Thomann · in stockCheck price ↗ -
If you build a Eurorack modular system, you will like this module because it packs several useful tools into one panel. You get pink and white noise, a clock and random pulse source, a sample and track and hold block, and a slew block. It suits anyone who wants random and sample-and-hold ideas in their patch without using up a lot of rack space.
Pros
- Analogue pink and white noise sources give you two noise colours to work with
- Clock and random pulse source has an adjustable rate for changing patterns
- Sample/Track and Hold block lets you capture and freeze voltages
Cons
- Only 22 HP wide, so it takes up a good share of a small rack
44AudioFu
IndexStableno change since Aug 17Aug 17$127 now$127€114 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 17Aug 17$192 now$192€172 at Thomann · in stockCheck price ↗ -
The ADDAC 106 T-Noiseworks is a clever little module for percussion and texture generation. It’s a great starting point for exploring noise-based sound design and would be a real asset for experimental electronic musicians or those wanting to add some grit to their rhythmic sequences.
Pros
- Excellent noise variety, offering a surprisingly wide sonic palette
- T-network filter provides unique, characterful shaping capabilities
- Compact 8HP footprint maximizes space in tight modular setups
Cons
- 40mA draw can be significant for power-constrained systems
- Single outputs per voice limit complex layering possibilities
42AudioFu
IndexStableno change since Aug 17Aug 17$222 now$222€199 at Thomann · in stockCheck price ↗
All 11 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 13 models we track, not a sample.
Median $111 — half of all noise modules here cost less.
How to choose the best noise modules
Noise Types
Beyond just 'white noise,' look for modules offering pink, red, filtered, or textured noise. A wider palette gives you more sonic options for everything from subtle ambience to chaotic percussion.
Modulation Options
Can you modulate the noise's pitch, density, or timbre? Modulation input jacks are key for integrating noise into evolving patches and creating movement. Static noise is fine, but dynamic noise is essential.
Output Shaping
Does the module offer filters, envelopes, or other shaping tools to sculpt the noise? Raw noise is often too harsh; shaping tools allow you to tame it and make it sit better in a mix.
Versatility
Can it do more than just generate noise? Some modules incorporate useful utility functions like sample-and-hold or random voltage generation, boosting their overall value.
Build Quality & Noise Floor
Let's be honest, budget modules can sometimes feel a little flimsy. Also, a noisy module generating noise is ironic and annoying - listen for unwanted hiss or hum.
Buying guide
Alright, so you're diving into the modular world and need some noise - good noise, the kind that adds grit, texture, and unpredictable character. Noise modules are often overlooked, but they're essential for adding that 'something else' that separates a sterile patch from a living, breathing soundscape. Let's break down the best noise modules you can snag for under $500 - because sonic chaos shouldn't break the bank.
At this price point, you're going to find compromises. Often, it's in the quality of components - expect slightly less robust knobs or a slightly higher noise floor than you'd find in higher-end modules. Don't chase the 'most features' - prioritize modules that excel at a few core functions and offer a unique sonic character.
A well-designed, simple noise module will often be more useful than a feature-bloated mess.
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 13 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 harsh and hissy, like static. Pink noise has more low-end and sounds smoother, like a rushing river. Red noise is even warmer and bassier, great for sub-bass textures.
Can I use a noise module for percussion sounds?
Absolutely! Triggering a noise module with an envelope generator and filtering it can create surprisingly realistic drum sounds - think snares, hi-hats, and even glitchy percussion.
What's a 'noise floor' and why should I care?
The noise floor is the inherent background hiss of the module. A lower noise floor means less unwanted hiss creeping into your signal. It's especially important if you're layering noise with other sounds.
Are there any good free noise module plugins I should check out?
Definitely. There are tons of excellent free VSTs and Eurorack utility modules that emulate noise generators. They're a great way to experiment before dropping cash on hardware.
I'm new to modular - where should I start?
Start with a simple module that generates a few different noise types. Focus on learning how to shape and modulate the noise with other modules in your system. Don't be afraid to experiment - that's the whole point!
