Flanger BL-20

Advanced modulation powerhouse

The flanger effect but not as you know it. Based on a beloved studio classic, Flanger BL-20 is unpredictable and inspiring in equal measure, pushing the familiar jet-engine effect into endless modulation territory. Add massive movement and harmonic depth to your mix with the only flanger you’ll ever need.

An elusive
classic

An unsung hero in the world of modulation effects.

A rare gem that’s renowned for its mysterious complexity. Flanger BL-20’s hardware predecessor may not be a household name, but its hypnotic sound and radical feature set speaks for itself.

Toggle and combine multiple modulation sources, manipulate the LFO shape and stereo spread, plunge harmonic sweeps to uncharted depths. Flanger BL-20 is no ordinary analog emulation - it’s an FX toolkit gone supersonic.

3 modulation sources

Choose between Auto (LFO), Env (internal or external) or Manual, or any combination of the 3, for an array of flanger sounds unlike anything you’ve ever heard.

Stereo enhancer

Operate Flanger BL-20 in either mono or stereo mode, and manipulate the stereo spread of the modulated signal for ultra-wide presence in your mix.

Zero-crossing

Due to a tiny delay applied to the dry signal, the modulated signal doubles back over the original starting point, resulting in a classic deep flange with prominent ‘blips’ in the sound.

BBD warmth

Flanger BL-20 uses authentic bucket-brigade device circuitry replication to emulate the original unit’s gloriously warm analog response.

Advanced controls

Change the Auto LFO shape, tweak the stereo spread - we even added an advanced function generator from Pigments. Vintage charm meets cutting-edge.

Presets

A curated selection of 28 presets, giving you instant access to the energetic movement and analog brilliance of Flanger BL-20.

Reaching
absolute zero

The flanger effect is achieved by modulating a delayed version of your signal using an LFO. Flanger BL-20 expands this principle in multiple directions.

By applying an undetectable delay to the dry signal, the modulated signal is able to reach - and eventually pass over - the original starting point of the signal. This totally cancels out certain frequencies - resulting in distinct dips in the sound. This is known as ‘zero-crossing’ or ‘through-zero’ flanging, perfect for that dynamite ‘80s guitar sound.

Finally, the option of multiple modulation sources gives Flanger BL-20 a uniquely animated quality. Use the default LFO, a responsive envelope follower, or a static manual override - there’s nothing quite like it.

Added
sweetener

A crucial element of Flanger BL-20’s sound is the bucket-brigade device circuitry emulation.

We meticulously replicated this circuitry in virtual form to ensure a pristine analog response. Not only does BL-20 offer mind-blowing modulation capabilities - it adds that desirable vintage sparkle that plugins often lack.

This makes it a formidable mix sweetener, whatever your style. Enhance your rhythm guitar parts, animate your backing vocal tracks, enrich a repetitive drum loop; whatever your application, it will simply sound better.

Flunky

Drumwarp

Morning after chords_Wet

Sweet soul

Snare vibrations

Hearing double

Advanced
controls

Flanger BL-20 goes far beyond the familiar flanger principles, retrofitted with cutting-edge functions and parameters to encourage a little healthy exploration. Modulation let loose.

  • Function generator

    For extra flexibility, we added the function generator from Pigments. Use this feature to override the Manual modulation source for a totally customized response.

  • Hi-pass filter

    Apply a Hi-pass filter on the input signal to moderate the unique zero-crossing sound. Expect clearer frequencies, or interesting regen behavior if you’re feeling adventurous.

  • Auto LFO shape

    By default, the LFO is a simple triangle waveform. Now choose from 4 additional shapes; sine, square, sawtooth and reverse sawtooth.

  • Stereo offset

    Manipulate the stereo spread of the dry and wet signals, and toggle a reverse sweep switch in tandem, for a swirling larger-than-life sound.

  • External envelope

    Trigger the envelope follower using an external source. Get your tracks talking to each other and relish the exciting results.

Artistscorner

Included in
FX collection

Effects you'll actually use

This effect is part of FX Collection, a suite of essential audio effect plugins empowering musicians, producers, and artists to get creative with their production. From iconic recording gear modeled with breathtaking accuracy, to cutting-edge contemporary effects, the collection includes the most sought-after studio tools, rare guitar pedals, modern mix enhancers, and beyond. Elevate your production and add color to your mix like never before.

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The features
you need

  • DAW ready

    However you use these plugins; for the amazing tone of their reverb, for the gritty preamps, or for their incredible sound design abilities, you'll be safe in the knowledge that they are fully compatible with your setup. These plugins work with all major DAWs, and on both Windows and MacOS.

  • ASC

    Arturia Software Center lets you download, organize, and update all of your Arturia software titles in one place, as well as manage all of your licenses across multiple devices. Keep it simple.

  • Resizable GUI

    Whether you want the full visual immersion of our classic effects emulations, or to save precious screen real estate, the interfaces for all of your Arturia plugins can be resized to a scale that suits you.

  • Real-time control

    Every parameter in every FX Collection plugin can be mapped to your favorite MIDI controller for instant, hands-on control of your mix. Sweep a filter, crank a preamp, or warp your modulation on the fly.

  • In-App Tutorials

    Every plugin in FX Collection comes with built-in tutorials, guiding you step-by-step through the crucial parameters, adjustments, and mixing hacks to get the most out of your sound. The tutorial panel also explains the controls you’re using in real-time - so you’ll never miss a tweak.

  • Preset browser

    FX Collection’s streamlined preset browser lets you filter, organize, and save your favorite presets for instant recall. Search by instrument type, genre, production technique, and much more - so you can quickly find the tweak you need and save valuable creative time!

TAE® Powered

The exclusive analog modeling technology that makes our emulations indistinguishable from the originals.

By accurately mimicking the characteristics of analog oscillators, filters, and soft clipping, we can provide astonishing component-accurate detail and authentic analog charm in equal measure.

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Gallery

Main Features

Ultra-flexible stereo flanger with enhanced controls

3 combinable modulation sources: Auto (LFO), Env and Manual

Perfectly emulated BBD response for coveted warm sound

Arturia's advanced features enhancing the original unit:

  • Zero crossing effect for deeper and more prominent flanger sounds
  • Stereo Offset and Reverse Sweep controls for stereo spread manipulation
  • 12dB/oct Hi-pass filter on input signal
  • The addition of the Function Generator from Pigments, which can override the Manual modulation mode
  • Choose from 4 additional Auto (LFO) modulation shapes

LFO and Function Generator feature tempo sync rates

External envelope option for extra-responsive modulation

Mono and stereo plugin modes

A selection of 28 curated presets for instant iconic modulation sounds

Platforms specifications

Windows

  • Win 10+ (64bit)
  • 4 GB RAM
  • 4 cores CPU, 3.4 GHz (4.0 GHz Turbo-boost)
  • 1GB free hard disk space
  • OpenGL 2.0 compatible GPU
  • ARM processors not supported on Windows

Required configuration

  • VST, AAX, Audio Unit, NKS (64-bit DAWs only).

Apple

  • Mac OS 10.13+
  • 4 GB RAM
  • 4 cores CPU, 3.4 GHz (4.0 GHz Turbo-boost) or M1 CPU
  • 1GB free hard disk space
  • OpenGL 2.0 compatible GPU

Work with ASC

  • An elegant and simple solution to help you install, activate, and update your Arturia software.

* All manufacturer and product names mentioned on this page are trademarks of their respective owners, which are in no way associated or affiliated with Arturia. The trademarks of other manufacturers are used solely to identify the products of those manufacturers whose features and sound were studied during the development. All names of equipment, inventors, and manufacturers have been included for illustrative and educational purposes only, and do not suggest any affiliation or endorsement by any equipment inventor or manufacturer.

*NKS ready