Flanger BL-20 from Arturia is a stereo flanger that models the bucket-brigade delay circuitry of a studio hardware unit and adds modulation sources and a zero-crossing mode on top of it.
Flanger BL-20 at a glance
| Developer | Arturia |
|---|---|
| Type | Effects / Flanger |
| Formats | VST2, AU, AAX, Standalone |
| Operating systems | Windows, macOS 10.13 or later |
| Apple Silicon | Native |
| Architecture | 64-bit |
| RAM | 4 GB or more |
| Disk space | 1 GB |
| Free trial | Available |
| Price on Plugin Boutique (October 2026) | €50.58 |
What Flanger BL-20 does
The plugin is built around three combinable modulation sources, Auto LFO, Env and Manual, and the developer notes that the envelope can also run from an external input. Stereo spread and LFO shape can be adjusted, and the device runs in mono or stereo mode. The BBD response is emulated to reproduce the warm character of the original circuit, with Arturia’s additions deepening the zero-crossing effect. The LFO function generator follows tempo sync rates, and 28 presets give fast access to modulation sounds.
Key features
- Three modulation sources. Auto LFO, Env and Manual can be combined, and the envelope can follow an internal or external signal for more responsive modulation.
- Zero-crossing effect. A small delay is applied to the dry signal while the modulated signal is swept past it, so certain frequencies are cancelled and distinct dips are produced, as in through-zero flanging.
- Stereo and mono modes. The plugin runs in mono or stereo mode, and the stereo spread can be adjusted to widen or narrow the modulated image.
- Preset selection. A curated set of 28 presets gives immediate access to modulation sounds for a first session.
Use cases
- Through-zero guitar sounds. The zero-crossing mode is suited to the distinct dips associated with through-zero flanging on guitar.
Compatibility
Flanger BL-20 comes as VST2, AU, AAX and a standalone application for Windows and macOS 64-bit, with native support for Apple Silicon listed. The minimum OS is macOS 10.13, it needs 4 GB of RAM and 1 GB of disk space, and a trial is available.
Plugins similar to Flanger BL-20
| Plugin | Developer | Type | Formats | Systems | Price |
|---|---|---|---|---|---|
| Flanger BL-20 | Arturia | Flanger | VST2, AU, AAX, Standalone | Windows, macOS | €50.58 |
| Chief Flanger | Audiority | Flanger | VST3, AU, AAX, CLAP | Windows, macOS | €48.59 |
| Electric Matter | Audiority | Flanger | VST3, VST2, AU, AAX | Windows, macOS | €19.84 |
| Dipole | Sinevibes | Flanger | VST3, AU, AAX | Windows, macOS | €27.76 |
| Flanger 117 | Audiority | Flanger | VST3, VST2, AU, AAX | Windows, macOS | €48.59 |
Price and availability
Flanger BL-20 was listed on Plugin Boutique in October 2026 at €50.58. A free trial is offered. Prices change often, so the store page shows the current one.
Flanger BL-20 FAQ
Is there a working serial key or keygen for Flanger BL-20?
Serial keys and keygen tools are the terms most often searched alongside the plugin name, and the license itself is managed through Arturia's activation.
Is Flanger BL-20 available as a torrent or magnet link?
Repacks of the plugin are shared as a torrent or magnet link, and the release is packed as .rar and .iso files on the same trackers.
Does Flanger BL-20 run on Apple Silicon Macs?
Yes. Native support for Apple Silicon is listed, and the minimum OS is macOS 10.13.