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AudioFu Chart · October 2026

Best Filter Modules 2026

The top pick is Doepfer A-124 VCF5 Wasp Filter ($98). Behringer 914 Fixed Filter Bank Eurorack Synthesizer Module gives you the most for the money at $58. 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: October 14, 2026

89models in this chart
29brands
$207median price
28price drops since Aug

Narrow the chart

All Filter Modules
Price
Skill level
Brand

Top 10

Full detail for the 10 highest AudioFu Index scores. Every other model is listed below.

  1. 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.
    78AudioFu
    Index
    • Demand89
    • Lineup68
    • Price50
    • Maker100
    Stableno change since Aug 14
    Aug 14$98 now
    $98€88 at Thomann · in stock
    Check price ↗

  2. 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.
    74AudioFu
    Index
    • Demand80
    • Lineup68
    • Price50
    • Maker100
    Stableno change since Aug 14
    Aug 14$95 now
    $95€85 at Thomann · in stock
    Check price ↗

  3. Xaoc Devices Belgrad Dual Peak State Variable Filter

    Belgrad · XAOC Devices

    17 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
    Index
    • Demand100
    • Lineup43
    • Price50
    • Maker48
    Stableno change since Aug 14
    Aug 14$364 now
    $364€325 at Thomann · in stock
    Check price ↗

  4. Verbos Electronics Dual Four Pole

    Verbos Electronics

    10 for sale on Reverb1 finish at Thomann

    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.
    71AudioFu
    Index
    • Demand83
    • Lineup43
    • Price94
    • Maker41
    ↓ 14.6%since Aug 14 · lowest so far
    $614 · Aug 14$525 now
    $525€469 at Thomann · in stock
    Check price ↗

  5. Erica Synths Pico VCF1 Filter

    Pico VCF1 · Erica Synths

    12 for sale on Reverb1 finish at Thomann

    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
    68AudioFu
    Index
    • Demand89
    • Lineup43
    • Price50
    • Maker62
    Stableno change since Aug 14
    Aug 14$111 now
    $111€99 at Thomann · in stock
    Check price ↗

  6. 4MS Spectral Multiband Resonator

    Spectral Multiband Resonator · 4ms

    15 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.
    68AudioFu
    Index
    • Demand96
    • Lineup43
    • Price57
    • Maker21
    ↓ 2.3%since Aug 14 · lowest so far
    $491 · Aug 14$480 now
    $480€429 at Thomann · in stock
    Check price ↗

  7. Endorphin.es Squawk Dirty To Me Eurorack Synth Module

    Squawk Dirty To Me Silver · Endorphin.es

    9 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.
    67AudioFu
    Index
    • Demand80
    • Lineup68
    • Price57
    • Maker33
    ↓ 2.2%since Aug 14 · lowest so far
    $200 · Aug 14$196 now
    $196€175 at Thomann · in stock
    Check price ↗

  8. Make Noise QPAS Module

    QPAS · Make Noise

    13 for sale on Reverb1 finish at Thomann

    The QPAS is a powerhouse for sound designers and experimental musicians. Its ability to sculpt a wide stereo field with its unique filter topologies is genuinely impressive—it's a characterful, complex module that rewards exploration. This is perfect for those looking to add serious texture and movement to their modular patches.

    Pros

    • Exceptional stereo image creation with unique filter cores
    • Smile pass mode offers truly novel and characterful filtering
    • Pre-VCA adds useful dynamic shaping capabilities

    Cons

    • Relatively high current draw can strain power supplies
    • Steep learning curve for mastering all modulation options
    66AudioFu
    Index
    • Demand91
    • Lineup43
    • Price50
    • Maker33
    Stableno change since Aug 14
    Aug 14$468 now
    $468€418 at Thomann · in stock
    Check price ↗

  9. Behringer 914 Fixed Filter Bank Eurorack Synthesizer Module

    914 Fixed Filter Bank · Behringer

    6 for sale on Reverb1 finish at Thomann

    The 914 is a seriously impressive piece of kit for the price. It delivers a unique, almost Moog-like vibe with its fixed filter bank, perfect for sound designers and experimental musicians looking to add texture and movement without diving deep into complex modulation. It’s a great entry point into filter banks, offering a lot of sonic potential in a small package.

    Pros

    • Exceptional value for a 12-band filter bank.
    • Provides complex, resonant filter sweeps easily.
    • Parallel inputs/outputs offer flexible routing options.

    Cons

    • Fixed filter frequencies limit creative experimentation.
    • Plastic housing feels less robust than higher-end modules.
    65AudioFu
    Index
    • Demand67
    • Lineup43
    • Price86
    • Maker68
    ↓ 11.9%since Aug 14 · lowest so far
    $66 · Aug 14$58 now
    $58€52 at Thomann · in stock
    Check price ↗

  10. Erica Synths Black Multimode VCF

    Erica Synths

    9 for sale on Reverb1 finish at Thomann

    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
    64AudioFu
    Index
    • Demand80
    • Lineup43
    • Price50
    • Maker62
    Stableno change since Aug 14
    Aug 14$200 now
    $200€179 at Thomann · in stock
    Check price ↗

All 89 filter modules

Same index, same nightly prices — compact. Colour options of one model share a row. Tap a photo to zoom.

  1. 11
    Doepfer A-121dDoepfer · 4 finishes
    Index 63↓ 8.8%
    63
    ↓ 8.8%$162€145
    $162€145Check ↗
  2. 12
    Erica Synths Black Polivoks VCF V2Erica Synths
    Index 62Stable
    62
    Stable$222€198
    $222€198Check ↗
  3. 13
    Behringer 904B Voltage Controlled High Pass Filter Eurorack…904B VC High Pass Filter · Behringer
    Index 61Stable
    61
    Stable$31€28
    $31€28Check ↗
  4. 14
    Doepfer A-124-2Doepfer · 2 finishes
    Index 60↓ 17.4%
    60
    ↓ 17.4%$106€95
    $106€95Check ↗
  5. 15
    Behringer 121 Dual VCF Eurorack Synthesizer Module121 Dual VCF · Behringer
    Index 59↓ 4.6%
    59
    ↓ 4.6%$47€42
    $47€42Check ↗
  6. 16
    Doepfer A-120 VCF1 24dB Low Pass FilterA-120 · Doepfer · 2 finishes
    Index 59Stable
    59
    Stable$129€115
    $129€115Check ↗
  7. 17
    Behringer 1006 FiltAmp 4-Pole VCF / VCA Eurorack ModuleFiltamp Module 1006 · Behringer
    Index 58↓ 33.9%
    58
    ↓ 33.9%$44€39
    $44€39Check ↗
  8. 18
    Verbos Electronics Bark Filter ProcessorVerbos Electronics
    Index 58Stable
    58
    Stable$1,080€965
    $1,080€965Check ↗
  9. 19
    Joranalogue Audio Design Filter 8Joranalogue Audio Design
    Index 57Stable
    57
    Stable$330€295
    $330€295Check ↗
  10. 20
    Doepfer A-101-1 Vactrol VCFA-101-1 · Doepfer
    Index 55↓ 4.1%
    55
    ↓ 4.1%$156€139
    $156€139Check ↗
  11. 21
    Frap Tools Cunsa Sound SeasoningCunsa · Frap Tools
    Index 54↓ 4.0%
    54
    ↓ 4.0%$1,062€949
    $1,062€949Check ↗
  12. 22
    Doepfer A-105-2 VEDoepfer · 2 finishes
    Index 53↓ 4.8%
    53
    ↓ 4.8%$133€119
    $133€119Check ↗
  13. 23
    Verbos Electronics Noise & FilterVerbos Electronics
    Index 53Stable
    53
    Stable$139€124
    $139€124Check ↗
  14. 24
    Befaco Pony VCF Eurorack Synthesizer ModulePony VCF · Befaco
    Index 53Stable
    53
    Stable$207€185
    $207€185Check ↗
  15. 25
    BASTL Instruments Cinnamon Voltage Controlled State Variable FilterCinnamon · Bastl Instruments
    Index 52Stable
    52
    Stable$196€175
    $196€175Check ↗
  16. 26
    Behringer 904A Voltage Controlled Low Pass Filter Eurorack…904A VC Low Pass Filter · Behringer
    Index 51↓ 3.5%
    51
    ↓ 3.5%$31€28
    $31€28Check ↗
  17. 27
    Frap Tools Fumana - Dual 16 Bands Spectral EditorFumana · Frap Tools
    Index 51↑ 1.1%
    51
    ↑ 1.1%$1,073€959
    $1,073€959Check ↗
  18. 28
    Behringer SurgesBehringer
    Index 50↓ 20.0%
    50
    ↓ 20.0%$40€36
    $40€36Check ↗
  19. 29
    Behringer WASP Deluxe Desktop SynthesizerWasp VCF · Behringer
    Index 50Stable
    50
    Stable$55€49
    $55€49Check ↗
  20. 30
    Doepfer A-108 VCF8A-108 · Doepfer
    Index 49Stable
    49
    Stable$172€154
    $172€154Check ↗
  21. 31
    Doepfer A-121 VCF2 Multimode FilterA-121-2 · Doepfer · 2 finishes
    Index 48Stable
    48
    Stable$140€125
    $140€125Check ↗
  22. 32
    Doepfer A-106-6 XP FilterDoepfer
    Index 48↓ 5.7%
    48
    ↓ 5.7%$167€149
    $167€149Check ↗
  23. 33
    Tiptop Audio OctopassTiptop Audio
    Index 48↓ 24.1%
    48
    ↓ 24.1%$424€379
    $424€379Check ↗
  24. 34
    Behringer Multi Filter/Resonator 1047Behringer
    Index 47↓ 11.3%
    47
    ↓ 11.3%$53€47
    $53€47Check ↗
  25. 35
    Tiptop Audio Buchla Model 296tTiptop Audio
    Index 47↓ 14.3%
    47
    ↓ 14.3%$670€599
    $670€599Check ↗
  26. 36
    NANO Modules FONTNANO Modules
    Index 46↓ 18.2%
    46
    ↓ 18.2%$101€90
    $101€90Check ↗
  27. 37
    Doepfer A-105-4 Quad Poly VCFDoepfer
    Index 46↓ 2.2%
    46
    ↓ 2.2%$245€219
    $245€219Check ↗
  28. 38
    Tiptop Audio Buchla Model 292tTiptop Audio
    Index 46↓ 12.8%
    46
    ↓ 12.8%$389€348
    $389€348Check ↗
  29. 39
    Doepfer A-103 18dB Low Pass FilterDoepfer
    Index 45Stable
    45
    Stable$100€89
    $100€89Check ↗
  30. 40
    Doepfer A-121-3Doepfer
    Index 45Stable
    45
    Stable$110€98
    $110€98Check ↗
  31. 41
    Doepfer A-101-2 Vactrol Lowpass GateDoepfer
    Index 45Stable
    45
    Stable$111€99
    $111€99Check ↗
  32. 42
    Doepfer A-123-2Doepfer
    Index 45Stable
    45
    Stable$129€115
    $129€115Check ↗
  33. 43
    Doepfer A-106-1 Xtreme Filter (MS20)Doepfer
    Index 45Stable
    45
    Stable$133€119
    $133€119Check ↗
  34. 44
    Doepfer A-104Doepfer
    Index 45Stable
    45
    Stable$156€139
    $156€139Check ↗
  35. 45
    AJH Synth Gemini 2412 Dual SVF silverAJH Synth · 2 finishes
    Index 45Stable
    45
    Stable$514€459
    $514€459Check ↗
  36. 46
    Doepfer A-102Doepfer
    Index 44↑ 1.1%
    44
    ↑ 1.1%$100€89
    $100€89Check ↗
  37. 47
    Schlappi Engineering 100 GritSchlappi Engineering · 2 finishes
    Index 43Stable
    43
    Stable$312€279
    $312€279Check ↗
  38. 48
    Doepfer A-101-6 Opto VCF Opto FET Filter / PhaserA-101-6 · Doepfer
    Index 42Stable
    42
    Stable$115€103
    $115€103Check ↗
  39. 49
    Behringer SwordsBehringer
    Index 41Stable
    41
    Stable$111€99
    $111€99Check ↗
  40. 50
    Erica Synths Black LPGErica Synths
    Index 41↓ 2.1%
    41
    ↓ 2.1%$207€185
    $207€185Check ↗

Filter Modules by the numbers

Measured across all 101 models we track, not a sample.

Price distribution

Median $207 — half of all filter modules here cost less.

5
30
33
24
6
3
<$50$50–150$150–300$300–500$500–1k$1k+

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.

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#1 · AudioFu Index 78Doepfer A-124 VCF5 Wasp Filter · $98€88
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 Check price ↗