AudioFu Chart · November 2026
Best Filter Modules Under $800 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 86 models across 28 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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You get a 12 dB multimode filter that uses the circuit of the EDP Wasp, a late-seventies analog synth. It has a band pass output, and a mix knob that blends low and high pass into a notch. It suits you if you build a modular rig and want a filter based on that classic circuit.
Pros
- Built as a 12 dB multimode filter with a band pass output
- Uses the filter circuit of the EDP Wasp analog synthesizer
- Combined low, notch and high pass output with a mix knob
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Doepfer A-106-5 12dB SEM Type Voltage Controlled Filter
A-106-5 SEM Filter · Doepfer
9 for sale on Reverb2 finishes at Thomann
You get a 12 dB multi-mode filter built on the circuit of the SEM module. It is 8HP wide and draws +30 mA on +12V and -20 mA on -12V. It suits you if you want a multi-mode filter in a small module with a modest power draw.
Pros
- Built on the circuit of the SEM module, a known filter design
- 12 dB multi-mode filter gives several filter types in one module
- Compact 8HP width fits small modular rigs
Cons
- Only 8HP wide, so it may not suit very large rigs with many modules
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Xaoc Devices Belgrad Dual Peak State Variable Filter
Belgrad · XAOC Devices
18 for sale on Reverb1 finish at Thomann
You get an analog dual-core filter with 10 filter types and a frequency range from about 4 Hz up to 28 kHz. It also offers non-linear feedback and cross-modulation, so it suits you if you want to shape sound in a modular rack. At 14 HP wide, plan your case space before you buy.
Pros
- Analog voltage-controlled dual-core filter module with 10 different filter types
- Frequency range of approximately 4 Hz to 28 kHz
- Input level is adjustable via controller, plus non-linear feedback and cross-modulation
Cons
- Draws +45 mA and -42 mA, so your rack's power supply must be able to handle it
72AudioFu
IndexStableno change since Aug 17Aug 17$363 now$363€325 at Thomann · in stockCheck price ↗ -
You get a filter module with a circuit similar to the Black Polivoks, built with Russian NOS operational amplifiers. You can switch it between lowpass and bandpass, and a CV input with an attenuator lets you control the cutoff frequency. It suits you if you already run a modular rig and want a filter that can self-oscillate.
Pros
- Filter circuit is similar to the Black Polivoks filter design
- Uses Russian NOS operational amplifiers
- Switches between lowpass and bandpass filter modes
Cons
- Needs +12 V and -12 V power to run
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This is a Eurorack filter module with a high-pass filter and a low-pass filter in one 21 TE panel. You get frequency and resonance controls on each filter, plus CV inputs to move the cutoff and resonance with other modules. It suits you if you want a flexible filter stage in a modular setup, since the high-pass output feeds straight into the low-pass input.
Pros
- Two separate filters in one module: a high-pass and a low-pass
- Discrete 4-pole design on both the high-pass and low-pass filters
- Separate filter frequency and resonance controls for each filter
Cons
- Resonance does not self-oscillate, so it cannot act as a sine source
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
If you want a filter that packs a lot into one small module, this one is worth a look. You get eight filter types, a stereo layout, and a built-in VCA, so you can work on two signals at once. It suits Eurorack players who like to switch filter types on the fly with Meta-CV scanning.
Pros
- Stereo filter with two channels, so you can shape two signals at once
- Eight filter types from the Grand Terminal, including low pass, band pass, and high pass
- Cutoff and resonance each have their own CV input for modulation
Cons
- Draws 120mA on +12V and 15mA on -12V, so your Eurorack power supply needs spare capacity
63AudioFu
Index↓ 2.2%since Aug 17 · lowest so far$200 · Aug 17$196 now$196€175 at Thomann · in stockCheck price ↗ -
You get an analogue multimode filter with lowpass, bandpass and highpass outputs all live at once. It has knobs for cutoff, resonance and input level, a germanium overdrive on the input, and CV inputs for cutoff and resonance. At 10 HP and 35 mm deep, it suits you if you build a Eurorack system and want a flexible filter that takes up little space.
Pros
- Analogue multimode filter gives lowpass, bandpass and highpass outputs at the same time
- Germanium overdrive on the input adds grit when you push the signal
- CV inputs for cutoff and resonance, each with its own attenuator
Cons
- Draws 27 mA on +12 V and 29 mA on -12 V, so your power supply needs room
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
You get six tunable filter and resonator channels in one module. Each band can lock to one of 11 tone scales or follow pitch control, so you can shape sound around melody and scales. It suits you if you already run a modular system and want a flexible, playable filter bank.
Pros
- Six tunable bandpass filter and resonator channels in one module
- Each channel's frequency can quantise to one of 11 tone scales
- Level fader with CV input and lock button on every channel
Cons
- Needs a power supply, as it draws +12V and -12V from the rails
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 86 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
Doepfer A-121dDoepfer · 4 finishes60↓ 2.7%$162€145$162€145Check ↗
- 13
Doepfer A-120 VCF1 24dB Low Pass FilterA-120 · Doepfer · 2 finishes59Stable$129€115$129€115Check ↗
- 14
Verbos Electronics Noise & FilterVerbos Electronics57Stable$139€124$139€124Check ↗
- 15
Behringer 121 Dual VCF Eurorack Synthesizer Module121 Dual VCF · Behringer56Stable$47€42$47€42Check ↗
- 16
Joranalogue Audio Design Filter 8Joranalogue Audio Design56Stable$330€295$330€295Check ↗
- 17
Doepfer A-101-1 Vactrol VCFA-101-1 · Doepfer55↓ 4.1%$155€139$155€139Check ↗
- 18
Behringer 1006 FiltAmp 4-Pole VCF / VCA Eurorack ModuleFiltamp Module 1006 · Behringer53Stable$44€39$44€39Check ↗
- 19
Behringer 914 Fixed Filter Bank Eurorack Synthesizer Module914 Fixed Filter Bank · Behringer53Stable$58€52$58€52Check ↗
- 20
Befaco Pony VCF Eurorack Synthesizer ModulePony VCF · Befaco52Stable$207€185$207€185Check ↗
- 21
Doepfer A-124-2Doepfer · 2 finishes51Stable$106€95$106€95Check ↗
- 22
Doepfer A-105-2Doepfer · 2 finishes51Stable$133€119$133€119Check ↗
- 23
Behringer 904A Voltage Controlled Low Pass Filter Eurorack…904A VC Low Pass Filter · Behringer49Stable$31€28$31€28Check ↗
- 24
Behringer WASP Deluxe Desktop SynthesizerWasp VCF · Behringer49Stable$55€49$55€49Check ↗
- 25
BASTL Instruments Cinnamon Voltage Controlled State Variable FilterCinnamon · Bastl Instruments49Stable$196€175$196€175Check ↗
- 26
Doepfer A-121 VCF2 Multimode FilterA-121-2 · Doepfer · 2 finishes48Stable$140€125$140€125Check ↗
- 27
Doepfer A-108 VCF8A-108 · Doepfer48Stable$172€154$172€154Check ↗
- 28
Doepfer A-103 18dB Low Pass FilterDoepfer45Stable$99€89$99€89Check ↗
- 29
Doepfer A-102Doepfer45Stable$99€89$99€89Check ↗
- 30
Doepfer A-121-3Doepfer45Stable$110€98$110€98Check ↗
- 31
Doepfer A-101-2 Vactrol Lowpass GateDoepfer45Stable$111€99$111€99Check ↗
- 32
Doepfer A-123-2Doepfer45Stable$129€115$129€115Check ↗
- 33
Doepfer A-106-1 Xtreme Filter (MS20)Doepfer45Stable$133€119$133€119Check ↗
- 34
Doepfer A-104Doepfer45Stable$155€139$155€139Check ↗
- 35
Doepfer A-106-6 XP FilterDoepfer45Stable$167€149$167€149Check ↗
- 36
Doepfer A-105-4 Quad Poly VCFDoepfer45Stable$245€219$245€219Check ↗
- 37
AJH Synth Gemini 2412 Dual SVF silverAJH Synth · 2 finishes45Stable$513€459$513€459Check ↗
- 38
Tiptop Audio OctopassTiptop Audio44↓ 9.6%$424€379$424€379Check ↗
- 39
Schlappi Engineering 100 GritSchlappi Engineering · 2 finishes43Stable$312€279$312€279Check ↗
- 40
Doepfer A-101-6 Opto VCF Opto FET Filter / PhaserA-101-6 · Doepfer42Stable$115€103$115€103Check ↗
- 41
Behringer SurgesBehringer41Stable$40€36$40€36Check ↗
- 42
Behringer Multi Filter/Resonator 1047Behringer41Stable$53€47$53€47Check ↗
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Behringer SwordsBehringer41Stable$111€99$111€99Check ↗
- 44
Erica Synths Black LPGErica Synths40Stable$207€185$207€185Check ↗
- 45
Erica Synths Black 3109 VCF/VCAErica Synths40Stable$207€185$207€185Check ↗
- 46
Erica Synths Drum Stereo DJ VCFErica Synths40Stable$234€209$234€209Check ↗
- 47
Stylophone CPM DF-8Stylophone40↓ 8.1%$265€237$265€237Check ↗
- 48
Erica Synths Graphic Resonant FBErica Synths40Stable$413€369$413€369Check ↗
- 49
ADDAC 607 CrossoverADDAC39Stable$129€115$129€115Check ↗
- 50
Tiptop Audio Forbidden Planet Analog FilterTiptop Audio39Stable$154€138$154€138Check ↗
Filter Modules by the numbers
Measured across all 98 models we track, not a sample.
Median $200 — half of all filter modules here cost less.
How to choose the best filter modules
Resonance
How far you can push that self-oscillation without it turning into a digital mess. A good filter should sing, not screech, even at extreme settings.
Filter Slope (dB/Octave)
12dB/octave gives you a mellow, rounded sound; 24dB/octave is more aggressive and cuts better through a mix. Know what you need for your application.
Drive/Saturation
A little extra dirt can make a huge difference, adding harmonics and sustain. Cheap drive circuits can sound fizzy; good ones add warmth and body.
Keyboard Tracking
If you plan to use it with a keyboard, accurate tracking is essential. Sloppy tracking makes it unusable for melodic lines.
Build Quality/Layout
Let's be real, you're spending money. A flimsy module or a cramped layout will just frustrate you. Consider ease of patching and long-term durability.
Buying guide
Alright, so you're diving into the modular world and need a filter? Smart move - a good filter is the heart of so much character. But $800 can vanish fast in Eurorack, so let's find you some serious filtering mojo without breaking the bank. We're focusing on modules that give you the most sonic bang for your buck, whether you're sculpting pads, gritty basses, or just dialing in some funky resonance sweep.
At this price point, expect some compromises. Some modules might have a slightly more limited feature set, or use less exotic components. The biggest trade-off is usually in the quality of the drive circuit - cheap saturation can be harsh, while the good stuff adds genuine character.
Prioritize a filter with a responsive, musical resonance, and don't be afraid to experiment - a little outboard distortion can fix a lot of sins.
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 98 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 Moog-style ladder filter and a State Variable filter?
Moog filters are known for their fat midrange honk and aggressive resonance - great for basses and leads. State Variable filters are cleaner, more versatile, and offer a wider range of tonal possibilities. It's a vibe thing - try both and see what speaks to you.
Can I use these filters for mixing?
Absolutely! A filter can be a powerful tool for shaping sounds in a mix, especially for adding movement or removing unwanted frequencies. Just be mindful of headroom - saturation can quickly become overwhelming.
What does 'self-oscillation' mean?
When you crank the resonance high enough, some filters will start generating their own audio signal, independent of the input. This can be used to create wild effects or even a synth voice entirely.
Are there any good DIY filter module options?
Definitely! Kits can be a great way to save money, but be prepared for some soldering. Quality varies wildly, so research the design and read reviews carefully.
My filter sounds muddy - what can I do?
Try rolling off some low frequencies with a high-pass filter before the main filter. Also, check your resonance - too much can quickly turn a beautiful tone into a muddy mess. EQ after the filter can help too.
