FabFilter Simplon dual multimode filter plugin interface

FabFilter Simplon: Dual Multimode Filter Plugin for Effects Free Download

Rated 4.6/5 on Plugin Boutique (87 ratings)

FabFilter Simplon is a filter effect plugin with two independent multimode filters offering low-pass, high-pass and band-pass responses. It is a simplified version of FabFilter Volcano 2, available in VST3, VST2, AU and AAX formats.

VST3VST2AUAAXWindowsmacOS32-bit only

AVAILABLE ATPlugin Boutique

Download Now

Free trial available from the developer

01Overview

Simplon is built around two filters that can run in serial or parallel. Each filter has selectable slopes of 12, 24 or 48 dB per octave, and three filter characteristics that shape how much overdrive and resonance the filter produces. According to FabFilter, the filters were designed to stay full and smooth even at high resonance, including self-oscillation. Combined with response and slope settings, the plugin offers up to 27 filter types. The interface centers on a large interactive display where both filter curves can be adjusted separately or together.

Best for

Synth filter sweeps
Aggressive bass filtering
Self-oscillating filter tones
Serial filter chains
Modulated filter movement

Developer: FabFilter
Category: Filters
Store: Plugin Boutique

02Key features

What you get

Two independent multimode filters with low-pass, high-pass and band-pass responses
12, 24 and 48 dB per octave filter slopes
Serial or parallel filter routing
Up to 27 filter types from response and slope combinations
Large interactive filter display with draggable curves
50-slot drag-and-drop modulation matrix
Interactive MIDI Learn and Smart Parameter Interpolation
Over 150 presets and per-component presets

03In depth

Sound Character and Filter Types

Simplon's two filters each offer three filter characteristics, ranging from smooth filters with moderate overdrive to raw, self-oscillating behavior. FabFilter says the filters were designed to be full and smooth, with a raw sound that stays clean rather than harsh or digital at full resonance.

The filters can be set to low-pass, high-pass or band-pass responses with 12, 24 or 48 dB per octave slopes. Used in serial or parallel mode, the two filters give a wide range of tonal shaping within a single plugin.

Workflow, Display and Modulation

The large interactive filter display shows both filter curves, and you can drag them to adjust cutoff and resonance. Knobs work in both vertical and circular drag modes, and Smart Parameter Interpolation smooths parameter transitions.

For movement, Simplon includes a 50-slot modulation matrix with drag-and-drop connections, along with modulation source visualization. The plugin also provides interactive MIDI Learn, undo, redo and A/B switching, and a built-in help file with interactive hints.

Who It Is For

Simplon suits producers who want a filter with aggressive, self-oscillating character and a fast visual workflow. Its 27 filter types and three characteristics per filter cover both subtle tone shaping and heavy, distorted filter effects. The plugin is available in 32-bit and 64-bit versions depending on host and format, and a trial is offered.

04Specs