AudioFu Chart · November 2026
Best Filter Modules 2026
The top pick is Doepfer A-124 VCF5 Wasp Filter ($98). Behringer 904B Voltage Controlled High Pass Filter Eurorack… gives you the most for the money at $31. Verbos Electronics Dual Four Pole leads the high end. Ranked by the AudioFu Index from 89 models across 29 brands, prices checked every night.
Last updated: November 4, 2026
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All Filter ModulesTop 10
Full detail for the 10 highest AudioFu Index scores. Every other model is listed below.
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Doepfer A-124 VCF5 Wasp Filter
A-124 Wasp Filter SE · Doepfer
12 for sale on Reverb2 finishes at Thomann
This little Doepfer Wasp Filter SE is a fantastic way to inject some serious attitude into your modular system. It’s got that classic Wasp edge, surprisingly versatile despite its size, and the build quality is solid for a module in this price range. Perfect for experimental sound design or adding grit to percussive elements.
Pros
- Distinct Wasp character delivers aggressive, resonant filtering tones.
- Black front panel with yellow caps offers a unique, eye-catching aesthetic.
- Compact 8HP footprint makes it ideal for space-constrained modular setups.
Cons
- Limited multimode options compared to more complex filter modules.
- Power draw of +30mA might be significant in systems with limited power.
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Doepfer A-106-5 12dB SEM Type Voltage Controlled Filter
A-106-5 SEM Filter Special Ed. · Doepfer
9 for sale on Reverb2 finishes at Thomann
This A-106-5 SEM Filter Special Ed. is a fantastic way to inject that classic, creamy Sequential Circuits sound into your modular setup. It's a relatively compact module, perfect for those wanting a distinct vintage vibe without a huge commitment. Ideal for sound designers and synth enthusiasts craving that SEM warmth.
Pros
- Classic Sequential Circuits SEM filter sound in a compact Eurorack module.
- Cream-colored panel and black knobs offer a visually appealing, vintage aesthetic.
- Provides a rich, resonant, and characterful tone ideal for basslines and pads.
Cons
- Limited filter modes compared to more complex multi-mode offerings.
- 8HP footprint can be restrictive in smaller modular systems.
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Xaoc Devices Belgrad Dual Peak State Variable Filter
Belgrad · XAOC Devices
18 for sale on Reverb1 finish at Thomann
The Belgrad is a powerhouse of a filter module – it’s seriously versatile. It’s ideal for sound designers and experimental musicians who want a wide palette of filter sounds, from subtle movement to chaotic, screaming textures. The non-linear feedback adds a real edge and makes it a real characterful module.
Pros
- Exceptional filter character, blending warmth and aggressive resonance.
- Unique filter modes offer incredible sonic versatility.
- Robust build quality with a reassuringly solid feel.
Cons
- Power consumption is relatively high for a single module.
- Steeper learning curve for mastering all filter modes.
72AudioFu
IndexStableno change since Aug 17Aug 17$363 now$363€325 at Thomann · in stockCheck price ↗ -
The Pico VCF1 is a fantastic little module for anyone wanting that classic, gritty Polivoks filter sound without the bulk. It's a real workhorse for experimental sound design and adding some edge to your modular patching, especially if you're into darker, industrial textures.
Pros
- Authentic Polivoks filter character, surprisingly powerful for its size
- Russian NOS op-amps deliver a unique, vintage-flavored tone
- Self-oscillation is clean and usable for wild sound design
Cons
- Limited filter modes compared to full-sized counterparts
- Power draw is a bit higher than some other Pico modules
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This Dual Four Pole is a beautifully voiced filter module, perfect for sound designers and experimental musicians seeking a refined, analog character. It’s a serious upgrade for those wanting to sculpt complex textures and evolving soundscapes – not so much a screaming, aggressive filter, but a truly musical one.
Pros
- Exceptional discrete filter design delivers a warm, organic tone.
- Normalisation provides a seamless, resonant high-to-low-pass transition.
- Well-built with robust construction and quality components – feels solid.
Cons
- 21 TE width can be restrictive in smaller Eurorack cases.
- Limited resonance range; lacks aggressive self-oscillation for extreme sounds.
69AudioFu
Index↓ 15.1%since Aug 17 · lowest so far$591 · Aug 17$502 now$502€449 at Thomann · in stockCheck price ↗ -
Endorphin.es Squawk Dirty To Me Eurorack Synth Module
Squawk Dirty To Me Silver · Endorphin.es
7 for sale on Reverb2 finishes at Thomann
The Squawk Dirty To Me is a fantastic character module for Eurorack. It’s a surprisingly versatile stereo filter with a real edge – perfect for sound design, experimental music, or adding grit to more conventional patches. This is a great option for anyone wanting a unique sonic signature without needing to commit to a full modular system.
Pros
- Exceptional filter character, uniquely aggressive and musical.
- Integrated VCA streamlines patching and sound shaping.
- Meta-CV scanning provides evolving, dynamic filter textures.
Cons
- Limited filter type control compared to a full Grand Terminal.
- 120mA draw can be significant for power-constrained racks.
63AudioFu
Index↓ 2.2%since Aug 17 · lowest so far$200 · Aug 17$196 now$196€175 at Thomann · in stockCheck price ↗ -
The Erica Synths Black is a fantastic, character-rich multimode filter that's a real workhorse. It's a great entry point into more complex filtering, especially if you’re chasing that vintage Moog vibe, and its small size is a huge bonus for Eurorack users. Perfect for sound design, experimental music, and adding warmth to synths.
Pros
- Gorgeous, warm filter character with genuine germanium overdrive tone
- Excellent resonance sweep provides screaming, musical feedback possibilities
- Compact 10HP footprint makes it ideal for dense modular setups
Cons
- The lowpass mode can be a bit muddy with extreme resonance
- Limited filter modes compared to some pricier, more complex options
63AudioFu
IndexStableno change since Aug 17Aug 17$200 now$200€179 at Thomann · in stockCheck price ↗ -
Behringer 904B Voltage Controlled High Pass Filter Eurorack…
904B VC High Pass Filter · Behringer
8 for sale on Reverb1 finish at Thomann
This filter is great if you need a compact, cheap way to cut low frequencies in your rack. You can automate the cutoff with three CV inputs, and the two frequency ranges give you quick options. It works well as a simple tool, but the lack of gain and resonance controls means you won't get deep sound shaping. Perfect for beginners or those who just need to remove bass.
Pros
- Two distinct frequency ranges let you shape tone quickly.
- Compact 8 HP width fits tight modular cases perfectly.
- Three CV inputs let you automate the cutoff smoothly.
Cons
- Single high-pass mode lacks low-pass flexibility for full control.
- No gain or resonance knobs limit shaping the filter voice.
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4MS Spectral Multiband Resonator
Spectral Multiband Resonator · 4ms
12 for sale on Reverb1 finish at Thomann
The Spectral Multiband Resonator is a seriously unique tool for sound design. It’s not a simple filter; it’s a resonant landscape generator perfect for experimental electronic music, ambient soundscapes, and anyone wanting to push the boundaries of modular synthesis. Be prepared to dig in – it's rewarding, but takes some effort to truly master.
Pros
- Exceptional tonal sculpting with six independently tunable bands.
- The scale quantization offers surprisingly musical and predictable results.
- Envelope follower per channel unlocks unique rhythmic and textural possibilities.
Cons
- The 26U width demands significant space in a modular setup.
- Steep learning curve; mastering all controls requires dedication.
62AudioFu
IndexStableno change since Aug 17Aug 17$480 now$480€429 at Thomann · in stockCheck price ↗ -
This Erica Synths Polivoks VCF V2 is a fantastic little module for recreating that gritty, Russian synth vibe. It’s a no-frills design, but it nails the aggressive character of the original Polivoks filter, perfect for industrial, experimental, or anyone craving a raw, analog edge in their modular patch. A great choice for those seeking a specific, iconic sound without a huge commitment.
Pros
- Authentic Polivoks character with original K140UD12 chips
- BP mode delivers aggressive, resonant sweeps and textures
- Compact 10HP footprint ideal for space-constrained modular systems
Cons
- Limited filter modes compared to more versatile options
- Can be quite aggressive and noisy at higher resonance settings
61AudioFu
IndexStableno change since Aug 17Aug 17$221 now$221€198 at Thomann · in stockCheck price ↗
All 89 filter modules
Same index, same nightly prices — compact. Colour options of one model share a row. Tap a photo to zoom.
- 11
Make Noise QPAS ModuleQPAS · Make Noise61Stable$467€418$467€418Check ↗
- 12
Verbos Electronics Bark Filter ProcessorVerbos Electronics61Stable$1,079€965$1,079€965Check ↗
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Doepfer A-121dDoepfer · 4 finishes60↓ 2.7%$162€145$162€145Check ↗
- 14
Doepfer A-120 VCF1 24dB Low Pass FilterA-120 · Doepfer · 2 finishes59Stable$129€115$129€115Check ↗
- 15
Verbos Electronics Noise & FilterVerbos Electronics57Stable$139€124$139€124Check ↗
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Behringer 121 Dual VCF Eurorack Synthesizer Module121 Dual VCF · Behringer56Stable$47€42$47€42Check ↗
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Joranalogue Audio Design Filter 8Joranalogue Audio Design56Stable$330€295$330€295Check ↗
- 18
Doepfer A-101-1 Vactrol VCFA-101-1 · Doepfer55↓ 4.1%$155€139$155€139Check ↗
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Behringer 1006 FiltAmp 4-Pole VCF / VCA Eurorack ModuleFiltamp Module 1006 · Behringer53Stable$44€39$44€39Check ↗
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Behringer 914 Fixed Filter Bank Eurorack Synthesizer Module914 Fixed Filter Bank · Behringer53Stable$58€52$58€52Check ↗
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Befaco Pony VCF Eurorack Synthesizer ModulePony VCF · Befaco52Stable$207€185$207€185Check ↗
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Doepfer A-124-2Doepfer · 2 finishes51Stable$106€95$106€95Check ↗
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Doepfer A-105-2 VEDoepfer · 2 finishes51Stable$133€119$133€119Check ↗
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Frap Tools Cunsa Sound SeasoningCunsa · Frap Tools51Stable$1,106€989$1,106€989Check ↗
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Behringer 904A Voltage Controlled Low Pass Filter Eurorack…904A VC Low Pass Filter · Behringer49Stable$31€28$31€28Check ↗
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Behringer WASP Deluxe Desktop SynthesizerWasp VCF · Behringer49Stable$55€49$55€49Check ↗
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BASTL Instruments Cinnamon Voltage Controlled State Variable FilterCinnamon · Bastl Instruments49Stable$196€175$196€175Check ↗
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Doepfer A-121 VCF2 Multimode FilterA-121-2 · Doepfer · 2 finishes48Stable$140€125$140€125Check ↗
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Doepfer A-108 VCF8A-108 · Doepfer48Stable$172€154$172€154Check ↗
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Doepfer A-102Doepfer45Stable$99€89$99€89Check ↗
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Doepfer A-103 18dB Low Pass FilterDoepfer45Stable$99€89$99€89Check ↗
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Doepfer A-121-3Doepfer45Stable$110€98$110€98Check ↗
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Doepfer A-101-2 Vactrol Lowpass GateDoepfer45Stable$111€99$111€99Check ↗
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Doepfer A-123-2Doepfer45Stable$129€115$129€115Check ↗
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Doepfer A-106-1 Xtreme Filter (MS20)Doepfer45Stable$133€119$133€119Check ↗
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Doepfer A-104Doepfer45Stable$155€139$155€139Check ↗
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Doepfer A-106-6 XP FilterDoepfer45Stable$167€149$167€149Check ↗
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Doepfer A-105-4 Quad Poly VCFDoepfer45Stable$245€219$245€219Check ↗
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AJH Synth Gemini 2412 Dual SVF silverAJH Synth · 2 finishes45Stable$513€459$513€459Check ↗
- 40
Frap Tools Fumana - Dual 16 Bands Spectral EditorFumana · Frap Tools45Stable$1,072€959$1,072€959Check ↗
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Tiptop Audio OctopassTiptop Audio44↓ 9.6%$424€379$424€379Check ↗
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Schlappi Engineering 100 GritSchlappi Engineering · 2 finishes43Stable$312€279$312€279Check ↗
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Doepfer A-101-6 Opto VCF Opto FET Filter / PhaserA-101-6 · Doepfer42Stable$115€103$115€103Check ↗
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Behringer SurgesBehringer41Stable$40€36$40€36Check ↗
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Behringer Multi Filter/Resonator 1047Behringer41Stable$53€47$53€47Check ↗
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Behringer SwordsBehringer41Stable$111€99$111€99Check ↗
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Erica Synths Black 3109 VCF/VCAErica Synths40Stable$207€185$207€185Check ↗
- 48
Erica Synths Black LPGErica Synths40Stable$207€185$207€185Check ↗
- 49
Erica Synths Drum Stereo DJ VCFErica Synths40Stable$234€209$234€209Check ↗
- 50
Stylophone CPM DF-8Stylophone40↓ 8.1%$265€237$265€237Check ↗
Filter Modules by the numbers
Measured across all 101 models we track, not a sample.
Median $207 — half of all filter modules here cost less.
How to choose the best filter modules
Filter Type
Moog-style ladder filters give you that classic fat midrange honk, great for bass and leads. State Variable filters are cleaner, more versatile for subtle shaping or complex effects. Then you've got multimode filters - lowpass, highpass, bandpass - offering a wider palette of sonic possibilities, but often with compromises in character.
Resonance
This is crucial. Cheap modules often have a weak, lifeless resonance that just fizzles out. A good resonance should scream - offer sustain and a clear harmonic presence. Too much, and it'll self-oscillate uncontrollably; find that sweet spot where it sings.
Slope (dB/Octave)
12dB/octave filters offer a smoother, warmer sound, while 24dB/octave filters are more aggressive and cut through the mix better. 24dB filters can also introduce a bit more aliasing at extreme settings, so be mindful of that. It's another trade-off - warmth versus clarity.
Modulation Capabilities
Can you modulate the cutoff frequency, resonance, or even the filter type? Modulation adds movement and expressiveness. Look for CV inputs and maybe even attenuators to control the modulation depth - essential for subtle or drastic changes.
Circuit Design & Components
Discrete transistor circuits (like those found in Moog filters) generally offer a richer, more complex tone than op-amp based designs. Higher quality components usually mean lower noise and better stability, but that comes at a price - and sometimes the discrete designs can be a bit finicky.
Buying guide
Alright, so you're diving into modular synths and realizing filters are the heart of the beast. They're not just a way to 'tone down' a sound; a good filter module can transform a basic oscillator into something truly expressive. Choosing the right one isn't about specs; it's about finding that sweet spot between character, resonance, and how it'll actually sound in your setup - whether you're crafting pads for a recording or trying to cut through a loud band rehearsal.
Don't chase the 'cheapest' option - filter modules are where you'll really hear the difference. Corners get cut on component quality, circuit design, and resonance response. A good filter is an investment; it's the heart of your sound.
Listen to demos, read reviews from players, and if possible, try before you buy - because a filter's character is incredibly subjective.
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 101 filter 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 a lowpass and a highpass filter?
A lowpass filter cuts frequencies above the cutoff point, letting the lows through - classic for bass. A highpass filter does the opposite, cutting the lows and letting the highs through - useful for cleaning up muddiness or creating unusual textures.
My filter sounds harsh and brittle. What's wrong?
It's likely a 24dB/octave filter pushed too hard, or a filter with a bright, ice-picky top end. Try a 12dB/octave filter, or dial back the resonance and cutoff. Experiment with blending it with other filters in your chain.
Can I use a filter as an effect?
Absolutely! Self-oscillation (resonance pushed to the limit) can create wild, screaming tones. Modulating the cutoff frequency can create sweeping, psychedelic effects. Get creative!
What does 'aliasing' mean in the context of filters?
Aliasing happens when a filter tries to process frequencies beyond its designed range. It manifests as unwanted artifacts and distortion - often a harsh, metallic sound. 24dB filters are more prone to aliasing than 12dB filters.
I'm new to modular. Should I start with a simple filter?
Definitely. A basic 2 or 4-pole lowpass filter with a decent resonance range will teach you the fundamentals. You can always add more complex filters later.
