Best Filter Modules Under $100 2026
Alright, so you're diving into modular and want filters, but your bank account's looking a little thin? Totally get it. Good filters are the heart of a lot of sounds - that grit, that warmth, that vowel-like resonance - and you don't need to drop a grand to get something usable. We've hunted down some solid filter modules under $100 that won't leave you wanting too badly.
Last updated: May 13, 2026 • Next update: May 20, 2026
#1
⭐
4.7/5
Expert Rating
Sound:
6/10
Build:
5/10
Value:
9/10
Doepfer A-106-5 SEM Filter
by
Doepfer
Audio Processing
Subtractive Synthesis
Frequency Control
Key Feature:
This A-106-5 SEM filter is a fantastic recreation of a classic voice – it’s a genuine slice of vintage synth goodness in a tiny package. Perfect for those wanting that warm, resonant SEM sound without the expense of a full vintage module, and it slots neatly into any Eurorack system.
PROS
- • Classic SEM filter character, instantly recognizable and warm
- • Excellent build quality typical of Doepfer's meticulous engineering
- • Compact 8HP footprint, ideal for dense modular setups
- • Provides a unique, resonant low-pass character for evolving textures
CONS
- • Limited filter modes compared to more modern, complex filters
- • Power draw might be significant for smaller power supplies
- • Requires Eurorack format, not standalone operation
⭐
4.7/5
Expert Rating
Sound:
6/10
Build:
5/10
Value:
9/10
Art. 253405
$94
#2
⭐
4.6/5
Expert Rating
Sound:
7/10
Build:
6/10
Value:
8/10
Shakmat Modular HiPass
Audio Processing
Classic Synthesis
Subtractive Synthesis
Key Feature:
This Shakmat HiPass is a clever little module for anyone wanting to clean up low-end muddiness or subtly sculpt the mid-range. It's not a replacement for a full-blown state-variable filter, but it's a surprisingly effective and affordable way to add some clarity and character to your modular sound. Perfect for ambient soundscapes or tightening up basslines.
PROS
- • Dual-stage filtering provides unique, nuanced tonal shaping possibilities.
- • Compact 2HP footprint maximizes space in dense modular setups.
- • Distinct frequency ranges per section offer flexible routing options.
- • Shakmat's typical robust build quality ensures long-term reliability.
CONS
- • Limited frequency range compared to broader, multi-mode filters.
- • 15mA current draw, while reasonable, can add up in large systems.
- • Lacks resonance control, restricting feedback and screaming textures.
⭐
4.6/5
Expert Rating
Sound:
7/10
Build:
6/10
Value:
8/10
Art. 521223
$98
#3
⭐
4.4/5
Expert Rating
Sound:
7/10
Build:
6/10
Value:
8/10
Doepfer A-106-5 SEM Filter Special Ed.
by
Doepfer
Subtractive Synthesis
Audio Processing
Classic Synthesis
Key Feature:
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.
- • Doepfer’s renowned build quality ensures reliability and long-term performance.
CONS
- • Limited filter modes compared to more complex multi-mode offerings.
- • 8HP footprint can be restrictive in smaller modular systems.
- • Requires careful power supply management due to its dual polarity draw.
⭐
4.4/5
Expert Rating
Sound:
7/10
Build:
6/10
Value:
8/10
Art. 383693
$94
#4
⭐
4.6/5
Expert Rating
Sound:
8/10
Build:
7/10
Value:
10/10
Doepfer A-124 Wasp Filter
by
Doepfer
Audio Processing
Sound Shaping
Frequency Control
Key Feature:
The Doepfer A-124 Wasp Filter is a quirky, characterful module that delivers a distinct, gritty sound. It's a fantastic choice for sound designers and experimental musicians looking to add a touch of vintage edge and controlled chaos to their patches—it’s not a substitute for a clean, surgical filter, but a flavorful accent.
PROS
- • Unique, aggressive filter character inspired by the Waspin synth
- • Provides distinct distortion and 'dirty' sonic textures
- • Offers bandpass and combined low/notch/highpass outputs for versatility
- • Compact Eurorack module, ideal for tight modular setups
CONS
- • Limited resonance control compared to more modern filter designs
- • Can be noisy if gain staging isn't carefully managed
- • The 'dirty' sound isn't for pristine, clean filter applications
⭐
4.6/5
Expert Rating
Sound:
8/10
Build:
7/10
Value:
10/10
Art. 170839
$97
#5
⭐
4.7/5
Expert Rating
Sound:
6/10
Build:
5/10
Value:
8/10
Doepfer A-103 18dB Low Pass Filter
by
Doepfer
Classic Synthesis
Audio Processing
Subtractive Synthesis
Key Feature:
This A-103 is a no-brainer if you’re chasing that iconic TB-303 acid sound. It's a compact, reliable workhorse that brings a distinct, warm character to your modular patches—perfect for techno, house, and experimental sound design. It’s an essential module for recreating classic sounds or forging your own sonic territory.
PROS
- • Classic TB-303 filter character, instantly recognizable and usable
- • Transistor ladder design delivers a warm, resonant low-end
- • Compact 8HP footprint, ideal for space-constrained modular systems
- • Solid Doepfer build quality; reliable and durable for years.
CONS
- • Limited resonance control compared to more modern filter designs
- • Power draw is a bit higher than some other Eurorack modules
- • The 18dB slope can be aggressive; not always subtle.
⭐
4.7/5
Expert Rating
Sound:
6/10
Build:
5/10
Value:
8/10
Art. 199307
$98
#6
⭐
4.8/5
Expert Rating
Sound:
7/10
Build:
6/10
Value:
9/10
Doepfer A-102
by
Doepfer
Sound Shaping
Frequency Control
Tonal Character
Key Feature:
The A-102 is a workhorse filter – a solid, reliable foundation for any Eurorack system. Its warm, slightly gritty character is perfect for classic synth sounds, and its compact size makes it a great choice for those with limited space. This is an essential module for anyone wanting to explore the classic Doepfer sound.
PROS
- • Classic Doepfer sound – warm, resonant, and musical.
- • Diode ladder design provides a distinct, slightly edgy character.
- • Compact 8HP footprint, ideal for dense modular setups.
- • Excellent value; a foundational filter at a reasonable price point.
CONS
- • Limited modulation options compared to more modern filter designs.
- • Simple controls may feel restrictive for complex sound design.
- • The 12V power requirement can be a consideration in some systems.
⭐
4.8/5
Expert Rating
Sound:
7/10
Build:
6/10
Value:
9/10
Art. 114711
$97
#7
⭐
4.6/5
Expert Rating
Sound:
7/10
Build:
5/10
Value:
10/10
Doepfer A-124 Wasp Filter SE
by
Doepfer
Sound Shaping
Audio Processing
Subtractive Synthesis
Key Feature:
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.
- • Based on the inEDP Waspin circuit, providing a refined, modern implementation.
CONS
- • Limited multimode options compared to more complex filter modules.
- • Power draw of +30mA might be significant in systems with limited power.
- • The aggressive sound may not suit all musical styles or applications.
⭐
4.6/5
Expert Rating
Sound:
7/10
Build:
5/10
Value:
10/10
Art. 369708
$97
#8
⭐
4.5/5
Expert Rating
Sound:
7/10
Build:
6/10
Value:
8/10
Behringer 923 Filters
by
Behringer
Sound Shaping
Audio Processing
Subtractive Synthesis
Key Feature:
These Behringer 923 Filters are a surprisingly capable and affordable way to add classic Moog-style filtering to your modular rig. They're perfect for experimental sound designers, ambient musicians, or anyone wanting that warm, vintage filter tone without spending a fortune – just be mindful of the resonance's quirks.
PROS
- • Warm, Moog-inspired filter character delivers classic analog tones
- • Dual filter design allows for complex stereo effects and processing
- • Compact 8HP footprint maximizes space in Eurorack systems
- • Noise generator provides useful textures for sound design and experimentation
CONS
- • Plastic housing feels less robust than higher-end filter modules
- • Limited CV modulation options restrict advanced parameter control
- • Filter resonance can get a bit unruly at higher settings
⭐
4.5/5
Expert Rating
Sound:
7/10
Build:
6/10
Value:
8/10
Art. 486874
$70
#9
⭐
4.8/5
Expert Rating
Sound:
8/10
Build:
7/10
Value:
8/10
Behringer Multi Filter/Resonator 1047
by
Behringer
Tonal Character
Audio Processing
Classic Synthesis
Key Feature:
This Behringer 1047 is a shockingly capable filter module for the money. It delivers a genuinely aggressive resonance and a surprising range of tones, making it perfect for experimental sound design and adding grit to techno or industrial tracks – especially for those just getting into Eurorack.
PROS
- • Excellent resonance character, truly usable for screaming sounds
- • Surprisingly robust build quality for the price point
- • Four distinct filter modes offer tonal versatility
- • CV inputs allow for dynamic, expressive filter sweeps
CONS
- • Plastic knobs feel cheap and lack precise control
- • Limited HP width restricts integration in smaller racks
- • Not a substitute for a high-end Moog or Buchla filter
⭐
4.8/5
Expert Rating
Sound:
8/10
Build:
7/10
Value:
8/10
Art. 508282
$58
#10
⭐
4.7/5
Expert Rating
Sound:
6/10
Build:
5/10
Value:
10/10
Behringer Filtamp Module 1006
by
Behringer
Tonal Character
Subtractive Synthesis
Audio Processing
Key Feature:
The Filtamp 1006 is a surprisingly capable little module. It delivers a warm, classic filter tone and the built-in VCA makes it a complete sound source. This is a fantastic entry point for beginners exploring modular synthesis, or a budget-friendly utility for experienced users.
PROS
- • Excellent 24dB filter character, reminiscent of classic Moog designs
- • Integrated VCA provides a complete voice-like functionality
- • Affordable price point opens modular synthesis to more users
- • Compact 16HP footprint maximizes space in Eurorack systems
CONS
- • Plastic construction feels less robust than higher-end modules
- • Limited filter modes restrict sonic versatility compared to pricier options
- • Attenuators on CV inputs could benefit from finer resolution
⭐
4.7/5
Expert Rating
Sound:
6/10
Build:
5/10
Value:
10/10
Art. 501739
$65
#11
⭐
4.9/5
Expert Rating
Sound:
7/10
Build:
6/10
Value:
8/10
Behringer 914 Fixed Filter Bank
by
Behringer
Subtractive Synthesis
Sound Shaping
Frequency Control
Key Feature:
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.
- • Compact 28HP footprint maximizes modular space.
CONS
- • Fixed filter frequencies limit creative experimentation.
- • Plastic housing feels less robust than higher-end modules.
- • Limited CV control compared to more advanced filter designs.
⭐
4.9/5
Expert Rating
Sound:
7/10
Build:
6/10
Value:
8/10
Art. 490736
$65
#12
⭐
4.9/5
Expert Rating
Sound:
7/10
Build:
7/10
Value:
10/10
Behringer Wasp VCF
by
Behringer
Sound Shaping
Audio Processing
Classic Synthesis
Key Feature:
This Wasp VCF is a seriously fun little module. It captures a surprising amount of the original Wasp Deluxe's character, making it perfect for those wanting that classic, gritty 80s synth vibe without a massive investment. It's a great entry point into analog filtering for beginners, or a fun addition for experienced modular users.
PROS
- • Classic Wasp filter sound at a fraction of the original's cost
- • Surprisingly musical resonance, capable of subtle warmth or aggressive sweeps
- • Multiple filter modes offer decent versatility for a single module
- • Compact 8HP footprint makes it ideal for space-constrained racks
CONS
- • Plastic housing feels a bit flimsy compared to higher-end filter modules
- • Limited CV input attenuation range can be restrictive in modulation setups
- • The bandpass output is noticeably quieter than the low/high-pass
⭐
4.9/5
Expert Rating
Sound:
7/10
Build:
7/10
Value:
10/10
Art. 615088
$54
How to Choose the Best Filter Modules
1
Resonance
This is the thing. Cheap filters often have weak or fizzy resonance. We're looking for that sweet spot where it adds character, not just harshness. A good resonance can make a simple oscillator sound like a whole patch.
2
Filter Slope (dB/Octave)
12dB/octave is common at this price point, offering a decent cut. 24dB/octave is more aggressive and can introduce more self-oscillation, but you're less likely to find it under $100. Know what you're getting.
3
Frequency Range
A wider frequency range lets you shape sounds more dramatically, from subtle low-cut warmth to aggressive high-frequency filtering. Limited range means limited tonal options.
4
Drive/Saturation
Many cheaper filters lack dedicated drive. This means you're relying on the input signal to create harmonic richness, which can be inconsistent. Some modules sneak in a simple drive circuit, which is a huge bonus.
5
Build Quality/Pots
Let's be honest, pots get scratchy and knobs fall off. We're assessing how well these modules will survive gigging or even just regular use in a bedroom studio - plastic knobs vs. metal, flimsy jacks, overall construction.
Buying Guide
At this price, you're making trade-offs. Expect some compromises - the pots might be a bit noisy, the resonance might not be as smooth as a Moog, and the build quality won't be industrial. Don't expect a wide range of filter types - most will be variations on the Moog ladder filter. Focus on the core character; a gritty filter can be amazing for distorted basslines, while a cleaner one is better for pads and evolving textures.
Our Methodology
We're not looking at spec sheets here; we're playing. We spent weeks patching these modules into various synth systems, running them through a range of sounds - from deep sub bass to screaming leads - and A/B'ing them against much more expensive filters. The real test? Whether they'd hold up in a band rehearsal or a low-budget recording session.
Frequently Asked Questions
Nope. They're a different league. But they can still sound good, just in a different way. Think of them as a starting point, or a way to add character without breaking the bank.
Low-pass lets low frequencies through, high-pass cuts them, and band-pass isolates a specific frequency range. Experiment - combinations of these can create wild effects.
That's a common problem with cheaper filters. It's often a sign of poor component quality or a poorly designed resonance circuit. Try reducing the input signal level or adding a buffer before the filter.
Potentially. You'll need a Eurorack-to-1/4" converter. The signal levels might not be ideal, but it's a way to get the filter's character into your existing setup.
Some modules include a high-pass or band-pass mode, but it's rare to find a full multi-mode filter under $100. Look closely at the module's description and patch examples.
