Sentinel AV and UK drum-and-bass producer Bladerunner have released Folda, a 4-group morphing distortion plugin.
Folda is available as VST3 for Windows and as VST3/AU for macOS (Universal Binary), with an intro price of $67 for the first seven days after launch (until May 2), regular price $99 thereafter.
The main idea behind Folda is spatial parameter blending. Instead of stacking distortion algorithms or switching between presets, you set up four distinct saturation “scenes” as independent groups and then drag a single point on a 2D GRID to morph between them in real time.
Each corner of the grid is a fully configured distortion engine, and anywhere in between is a smooth, per-sample interpolation of the four. The morphing concept was originated by Bladerunner (releases on Hospital Records and RAM Records), who has been an ongoing collaborator with Sentinel AV on the plugin’s direction.
Each group is built around a wavefolding unit, a clipping unit, a filter section (lowpass, highpass, bandpass, notch, all-pass, formants, comb, phaser, and ring mod, with pre or post placement), and per-group controls for bias, pan, mix, and output gain.
In total, there are 34 distortion algorithms spanning six categories: wavefold, clip, saturate, overdrive, fuzz, and digital. They’re all calibrated for unity gain across the full drive range, so switching algorithms mid-session doesn’t send your levels jumping around.
The modulation engine is unusually deep for a distortion plugin. You get up to 16 modulators, each targeting up to 32 parameters, with sources including tempo-sync LFOs, Perlin, Simplex, and fBm noise, envelope followers, ADSR, and MIDI note modulators.
The GRID position itself is modulatable, which is really the feature that lets you build evolving, playable distortion textures instead of set-and-forget effects.
On the global side, Folda has auto-gain compensation, up to 16x oversampling with FIR Equiripple filters, mid-side processing with sub-bass mono protection (LR2 crossover at 150Hz), and a 3-band parametric EQ with pre/post placement per band.
The interface uses a real-time OpenGL visualizer with vectorscope and oscilloscope modes, and you can switch between portrait, landscape, and square window layouts.
What absolutely amazed me is that Sentinel AV has published a fully working in-browser WASM demo of Folda’s main interface, with real-time audio on guitar, drums, and bass.
You can basically test the plugin inside your browser, and it works like a charm. It even lets you upload your own audio, process it with Folda, and then download the result.
There’s also a free YouTube tutorial series led by Bladerunner, currently in production.
Folda is Sentinel AV’s first paid release, following the free Symmetry, Waveform, and Sidewave plugins. It requires Windows 10 or later (64-bit) or macOS 11 Big Sur or later, a VST3 or AU-compatible DAW, and an OpenGL 3.2+ GPU.
Download: Folda ($67 intro, $99 regular)
Last Updated on April 29, 2026 by Tomislav Zlatic.
