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FLTRS

THE ULTIMATE SYNTH FILTER TOOLBOX

$79
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FLTRS — plugin interface
Effects

FLTRS

Creative Effects Filter Instrument

$79
  • Instant download
  • No dongle — just sign in
  • 30-day money-back guarantee

VST3 · AU · AAX · macOS · Windows

Also in The FX Bundle

Inside FLTRS

  • Legendary analog contours, spectral processors, and physics-driven engines for reshaping real material.

    37 Circuits

  • From clean shaping to transformer weight, resonance bloom, unstable motion, and destructive edge.

    8 Families

  • Playable starting points built to get you to a result fast and open deeper exploration.

    300 Presets

  • Built to chain across synths, vocals, drums, buses, and layered sound-design chains.

    VST3 / AU / AAX Formats

FLTRS

$79

Creative Effects Filter Instrument

37 legendary analog circuits and experimental physics engines that turn any source into a living synthesis surface.

Watch

FLTRS in action

Jump between families, launch an A/B demo, and hear what each FLTRS circuit actually does in a real musical setting.

01 / 37

Acid Ladder Filter

TB-303 diode ladder

Squelchy acid with snappy envelope sweeps and rubbery self-oscillation

Full envelope shaper built in — attack, decay, accent for classic acid dynamics

ControlsCutoff, Resonance, Drive + Env Mod, Env Attack, Env Decay, Env Accent

0:00 / 0:00

Browse all 37 circuits, or narrow to a family.

Technology

Built from our Anima Circuits™ research.

We rebuilt the physics. Then we went further.

Most filter plugins fake it. They analyze how a vintage circuit sounds at a moderate setting and build a generic digital model — fine in the sweet spot, but the moment you push the resonance or drive the input, the illusion shatters into harsh digital clipping, plastic aliasing, and dead zones. FLTRS is the debut of Anima Circuits: instead of approximating the final sound, we modeled the actual physical properties of every resistor, capacitor, and transistor. The virtual components interact exactly like physical metal, voltage, and heat.

That's what gives each circuit its character. Resonance sings into self-oscillation without harsh digital artifacts. Drive warms and saturates instead of breaking apart. Filter modes morph continuously without a click or dropout — push it to the limit and it screams and sings without a hint of digital harshness.

Technical Specifications

Formats

  • 64-bit VST3 / AU / AAX (Mac/Windows)

Authorization

  • No USB dongle required. Seamless MNTRA account login.

Algorithms

  • 37 total circuits and engines across 8 families.

Performance

  • Envelope Follower & AniMod XYZ Macro System.

Output

  • Full Parametric EQ & Dual-Mode Limiter (Modern mastering / vintage 1176-style).

Efficiency

  • Low-CPU DSP — built to be chained.
Download the manual (PDF)

Try it free

FLTRS-LE

One legendary filter circuit. Fully unlocked.

The one we chose is EUROPA-6 — our take on the Roland Jupiter-6 filter. Not modeled. Reconstructed. Most filter plugins model the sound of a circuit; EUROPA-6 models the circuit itself — OTA gain stages, SVF topology, component tolerances, and the subtle nonlinearities that make a Jupiter-6 feel alive rather than just filtered.

We also pushed it past the hardware: negative resonance, parallel band-split path, stereo detune, and vintage aging drift. The Jupiter-6 filter has a quality where the resonance snarls but never loses control — bold sweeps that stay usable no matter how hard you push them.

  • 1 Algorithm — EUROPA-6, fully unlocked
  • 9 Atelier Presets
  • VST3 / AU / AAX
  • Mac + Windows
FLTRS-LE perform view — the EUROPA-6 circuit

As Featured In

FAQ

Before you buy.

Is FLTRS a synthesizer? Does it generate sound on its own?

FLTRS is an audio effect plugin, not a standalone synthesizer that generates sound via MIDI. It is designed to process your existing audio. By chaining the circuits and physics engines together, it turns your DAW into a much more performable synthesis environment.

Does this require an iLok or physical USB dongle?

No. FLTRS authorizes with your MNTRA account—no dongles or iLok.

Will FLTRS run on Apple Silicon and Windows?

Yes. Apple Silicon and Intel Macs (macOS 10.11+), and Windows 10+—VST3, AU, and AAX.

Is this just another mixing EQ like FabFilter?

EQs correct. FLTRS is a creative filter instrument—identity, motion, and analog-style push when you lean on it.

I want to chain 3 or 4 instances. Will this melt my CPU?

That's how it was meant to be used—lean enough to sit between reverbs, delays, and buses in a real session.

The MNTRA FX Ecosystem

Already own BOREALIS or BRUITAGE?

FLTRS shares the same AniMod XYZ reactive engine. Chain all three together and your entire signal chain — filter, distortion, reverb — breathes, moves, and reacts to your performance simultaneously.

You're hereFilter

FLTRS

Contour, drive, spectral warp, and filter motion become the shape-maker at the front of the chain.

Destroy

BRUITAGE

Add grit, collapse, and textural violence after FLTRS without losing the shared performance vocabulary.

Bloom

BOREALIS

Push the transformed signal into animated space and smear the motion into something cinematic.

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