AudioFuAudioFu Chart · October 2026
Best Noise Modules Under $300 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 8 models across 5 brands, prices checked every night.
Last updated: October 15, 2026
Top 8
Full detail for the 8 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
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.
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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 ↗ -
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
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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 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 ↗ -
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
Noise Modules by the numbers
Measured across all 10 models we track, not a sample.
Median $95 — half of all noise modules here cost less.
How to choose the best noise modules
Noise Type Variety
A good noise module isn't just white noise. We're looking for options like pink, brown, filtered, or even granular noise, to give you more sonic palette. More options = more creative possibilities.
Modulation Input
The ability to modulate the noise's characteristics - pitch, filter cutoff, amplitude - is vital. Static noise gets old fast. Modulation breathes life and unpredictability into it.
Output Level & Range
You need headroom! A weak noise signal gets buried in the mix. A wide dynamic range lets you go from subtle textures to chaotic bursts without clipping.
Filter Options
Integrated filters are a huge bonus. Being able to shape the noise directly within the module saves space and often sounds better than routing to an external filter.
Build Quality & Stability
Cheap modules can be noisy in the wrong way - popping, crackling, or drifting out of tune. Solid construction and reliable operation are non-negotiable, even on a budget.
Buying guide
Alright, so you're diving into the modular world and need some grit. Noise modules are surprisingly crucial - they're the foundation for textures, percussion, and just plain weirdness. But dropping serious cash on a noise source? Nah, not necessary. We're rounding up the best noise modules you can snag for under $300, because a killer sound shouldn't bankrupt you.
At this price point, expect some compromises. You might not get a ton of features or the most pristine build quality, but you can get a functional and inspiring noise source. Watch out for modules with flimsy pots - those are the first things to fail.
Don't chase features you won't use; focus on a module that offers the specific type of noise and modulation you need for your sound.
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 10 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 brown noise?
White noise is harsh and hissy, like static. Pink noise has more low-end, a smoother, more natural feel. Brown noise (also called red) is even darker, with a pronounced low-end thump - great for sub-bass textures.
Can I use a noise module for percussion?
Absolutely! With some clever gating, filtering, and envelope shaping, you can create convincing drum sounds. It takes some experimentation, but the results can be amazing.
Are there any 'must-have' features I should look for?
Modulation inputs are key. Also, a decent output level to avoid having to crank everything up and introduce noise. An integrated filter is a major plus, too.
I'm new to modular. Is a noise module a good starting point?
It's a great starting point! Noise is a fundamental building block for a huge range of sounds, and it's relatively easy to experiment with.
What's the deal with noise and power consumption?
Budget modules can sometimes draw more current than they advertise. Make sure your power supply has enough headroom to handle the module without causing instability in your system.
