Filter plugins

Dual creative filter with 7 saturation styles. Rhythm-synced sweeps, self-oscillating resonance, built for movement not correction.

• Two filters usable in series or parallel, letting a single instance do the work of stacking two separate filter plugins
• Seven analog saturation styles layered onto the filter path add character most surgical filters don't attempt
• Rhythm Mode locks filter movement to tempo without manual LFO sync setup

• Aimed squarely at creative sound design, not the transparent corrective filtering a mix engineer might reach for on a vocal or bus
• 64-bit only and drops support for ARM-based Windows machines, a real gap for anyone on newer Windows-on-ARM hardware

Four-filter modular filter/synth hybrid. Drag-and-drop modulation matrix, self-oscillating analog styles, built for deep sound design.

• Up to four filters routable in series, parallel, or split configurations, closer to a modular filter bank than a single-filter plugin
• 16-step XLFOs and a full drag-and-drop modulation matrix make complex, evolving filter movement fast to build without menu diving
• CLAP support alongside the usual formats future-proofs it for newer lightweight-host workflows

• Four filters plus a full modulation matrix is a lot of surface area for someone who just wants a quick sweep or corrective cut
• Self-oscillation and drive settings that give it character also mean gain-staging carelessly can get loud and harsh fast

Virtual-Voltage multimode filter with three modulators. Sequencer, LFO, and sidechain-capable envelope follower in one analog-styled filter.

• Three modulators (sequencer, LFO, envelope follower) can each independently target cutoff, resonance, or delay time at once
• Sidechain-capable envelope follower makes ducking and audio-reactive filter effects straightforward without extra routing
• MIDI Learn support makes it fast to map to a hardware controller for live filter performance

• Waves plugins run on frequent, steep sales, so the price on any given day is a poor guide to what it actually costs
• Waves' own product page doesn't spell out the specific filter modes on offer, so it's harder to judge the exact filter shapes before buying

21-filter creative multi-filter with vowel modes. Step sequencer and wobble generator built in, tuned for EDM movement.

• 21 distinct filter types in one plugin, including nine humanoid vowel sounds most filter plugins don't offer at all
• 16-step sequencer and dedicated Wobble Generator with 16 waveforms make rhythmic bass movement fast to dial in without a separate LFO plugin
• Right-click parameter modulation routing keeps complex modulation assignment quick once you know the workflow

• Vowel and comb modes are distinctive but niche, most useful for EDM bass and sound design rather than general mixing
• Bipolar modulation and dense routing options add a learning curve compared to a simple single-knob filter

30-filter, 250-algorithm filter bank. Three-filter serial/parallel routing plus reverb, delay, and amp sim bundled in.

• 30 filter types built from 250+ algorithms, an unusually large palette for a single filter plugin to draw from
• Bundled Space reverb, Tempolay granular delay, and Cabinator amp sim mean it can function as a small effects rack, not just a filter
• 1000+ presets from professional sound designers give a fast starting point across very different filter characters

• Filter names lean creative and proprietary (Swiss Army Knife, Brick Wall) rather than conventional labels, so finding a specific classic filter type by name takes some exploring
• Three-filter routing and eight modulation sources add real depth, but also real setup time versus a simpler single-filter tool

Resonant filter modeled on the Korg MS-20's distinctive lowpass and highpass. 16-step sequencer and envelope follower for tempo-synced movement.

• Modeled specifically on one of the most recognizable and aggressive-sounding hardware filters in synth history, a very particular flavor most digital filters don't replicate
• 16-step sequencer built in means rhythmic filter patterns don't require a separate modulation plugin
• NKS support makes it quick to browse and load from Native Instruments hardware, useful if that's already part of your rig

• Only offers low-pass and high-pass modes plus a band-pass-style combination, a narrower type palette than multi-type filter plugins in this list
• No notch or band-reject mode, so it's not the tool for surgically cutting out a single problem frequency

Dual-filter engine with Clean and Warm voicings per slope. Up to 60 LFOs and 50 envelopes per filter for deep modulation design.

• Every filter type ships in both a Clean digital voicing and a Warm analog-modeled voicing with resonance drive, a direct choice most filter plugins don't offer
• Up to 60 LFOs and 50 envelopes per filter, drawable by hand, is an enormous modulation depth for a plugin in this price range
• A dedicated Safe mode caps resonance at stable levels for anyone who wants the character without the risk of runaway self-oscillation

• Dual-filter routing and per-filter modulation stacks are a lot to configure for someone who just wants one quick sweep
• Audio-rate modulation tops out around 5.24kHz, a ceiling worth knowing if you're chasing true audio-rate FM-style filter effects

Free host-synced filter module with tempo-locked volume and pan modulation. A lightweight, no-cost way to add rhythmic filter movement.

• Completely free, and still gets regular updates (currently on a 3.x line), unusual longevity for a no-cost utility plugin
• Host tempo sync built in makes rhythmic gate and filter-sweep effects fast to dial in without programming a separate LFO
• Runs on Windows, macOS, and Linux, wider platform coverage than most of the paid plugins in this list

• A single, focused filter module rather than a multi-type filter bank — fine for tempo-synced sweeps and tremolo-style gating, not for browsing dozens of filter characters in one plugin
• Free and lightweight by design, so it skips the deep modulation matrices, multiple filter voicings, and preset libraries the paid plugins on this list build around

Free 7-mode snap-in filter for the kilohearts modular ecosystem. Works standalone or stacked inside Phase Plant, Multipass, and Snap Heap.

• Completely free, with seven filter modes covering low-pass through high shelf in one compact module
• Works as a standard plugin on its own, or snaps directly into kilohearts' modular hosts like Phase Plant and Snap Heap for deeper chaining
• High Q settings push it into genuine self-oscillation, real character available at zero cost

• No dedicated modulation section of its own, tempo-synced or LFO-driven movement has to come from kilohearts' separate modulation snap-ins or your DAW
• Full chaining and modulation flexibility really only shows up once you're working inside a kilohearts host like Phase Plant, less compelling as a completely standalone plugin

Free 4-band multiplied/summed resonant filter. Up to 16x oversampling, no iLok, ringmod-adjacent tones at high resonance.

• Completely free with no iLok dongle or internet activation required, a genuinely no-friction way to add a characterful resonant filter
• Four bands that can be summed or multiplied together open up filter combinations well past a standard single-band low-pass or high-pass
• Runs on Windows, macOS, and Linux (plus an iOS/iPadOS App Store version), unusually broad platform coverage for a free plugin

• A single filter engine with one core algorithm rather than a large bank of distinct filter types, less flexible than plugins built around dozens of filter shapes
• Ringmod-like harsh tones at extreme settings are a specific creative flavor, not a transparent filter for corrective mixing work

Polivoks-inspired filter with Filter Drive. Syncable LFO and envelope follower for autowah-style tracking.

• Modeled on the Polivoks synth's famously aggressive, non-standard filter response, a distinct character most filter plugins don't cover
• Expands the original hardware with highpass, notch, and peak responses the Polivoks itself never had
• At $19, it's one of the more affordable ways into a genuinely characterful analog-modeled filter

• A single-character filter built around one specific vintage circuit, not a broad multi-type filter bank
• Envelope follower and LFO cover the modulation basics but don't reach the deep multi-source routing of the pricier plugins here

50-type hybrid filter built for bass processing. Combines classic and hybrid filter modes with built-in modulation.

• 50 filter types in one plugin, purpose-built around bass processing rather than being a general-purpose filter adapted for it
• Hybrid filter modes blend characteristics that a single classic low-pass or band-pass can't reach on its own
• Integrated modulation means movement doesn't require patching in a separate LFO or envelope plugin

• Marketed specifically around bass processing, so it may be an odd fit if what you need is filtering for vocals, drums, or a full mix bus
• With 50 filter types on tap, dialing in one specific classic sound can mean more scrolling than plugins that keep their palette to a focused dozen

35-type filter and EQ hybrid with nine modulators. XY and MSEG modulation for detailed, evolving filter automation.

• 35 filter types spanning digital, analog-modeled, and multi-resonant shapes, one of the broadest single-plugin palettes in this category
• Nine modulators including XY pads, an MSEG, and sidechain-capable envelope followers give unusually fine-grained control over how the filter moves over time
• Positioned as both a filter and an EQ, so it can double as a tone-shaping tool, not just a sweep effect

• Splits its identity between filter and EQ duties, so if you want a dedicated surgical EQ or a pure creative filter, this hybrid role isn't a specialist at either
• At $99, it costs more than most single-purpose filter plugins here, a real ask for a tool that's positioned as two things at once

Modal resonator with 200+ bandpass filters plus a self-oscillating 24dB State-Variable filter. Morphs between acoustic and synth-style filter models.

• 200+ bandpass filters in its modal engine can give a sound a physical, struck-object quality that a conventional subtractive filter can't produce
• 27 filter models spanning acoustic resonators to mathematical and synth-style designs cover a much wider conceptual range than most filter plugins
• Real-time morphing between filter models and 4 modulation slots with cross-modulation make evolving, animated filter movement straightforward

• Modal/resonator-style filtering is a specific, unusual sound, not a substitute for a conventional sweepable low-pass on a bassline
• 27 models plus cross-modulation is a deep instrument to learn relative to a plugin built around one or two familiar filter types