An incarnation of an iconic stompbox that you're sure to appreciate

A legendary flanger brought back to life

By bringing the classic effects pedal back to life, D16 has created an essential effects plugin that will appeal not only to guitarists but also to musicians and producers across virtually every genre: whether you like rock guitar riffs or melodic synth lines, you'll discover that the extreme attention to sonic detail combined with the flexibility offered by modern technology makes Antresol the perfect example of what a flanger should be in the modern era. The original, conceived in the mid-1970s, quickly became a benchmark for flanger-style effects by offering an exceptionally rich character defined by luxuriously harmonious interactive resonances, and it has been heard on countless classic recordings since then. That's why D16 couldn't resist the opportunity to bring the soul of this classic back to life in a completely modern incarnation with Antresol,

Loaded with features far beyond the original

Antresol users can also enjoy absolute freedom of control over every aspect of the BBD-based delay line (including nuances such as clock system linearity calibration and the number of analog memory cells that form the backbone of BBDs). It has never been easier to create a flanger sound that is exclusively yours while retaining all the richness and warmth offered by the original classic circuit design!

In addition to the standard parameter knobs found on the front of the original unit, there is also a wide range of deeper parameters available for modification, such as the potentiometers on the circuit board that would normally be inaccessible without opening the effects pedal. Some even go far beyond what you might find in common flanger-style effects: a fully controllable LFO (with adjustable phase and tempo sync with a host application); the ability to unlink the stereo channels and control the most important parameters independently for the left and right (or mid/side, depending on the selected mode), and more. Try the demo today and see where your imagination takes you!

True BBD emulation with complete control

An exceptionally accurate emulation of a pulse-controlled solid-state analog delay line (a Bucket Brigade device) is responsible for the flawless sonic characteristics found in Antresol. Effects based on high-quality BBD emulations stand out with a remarkable, even seductive, warmth, and D16 has no doubt that the tremendous success of D16's first foray into BBD delay line emulation, the Syntorus chorus plugin, can be directly attributed to this approach.

The key element around which Antresol is designed, an analog BBD integrated circuit, proved to present some unique challenges for this type of digital emulation. In particular, the feedback parameter showed some weaknesses in the form of incorrect shapes of emerging peaks and dips in the frequency response, which forced us back to the drawing board. After extensive research and development, D16's Eureka moment came in the form of a highly refined BBD emulation that uses an almost analog signal representation at all times, ensuring behavior much closer to the original physical circuit. While it is a bit chaotic, it includes all the benefits and subtleties that the analog domain can offer, unlike a deterministic,

Spectrum comparison

Comparison of frequency responses between the Electric Mistress effects pedal and Antresol for a wide range of feedback values. All tests were performed using white noise as a signal source and calibrated spectral analysis software.

The following figure shows how faithful the emulation is by comparing the upper range of the spectrum, where all emulations generally fail. See how both responses match even at the highest frequencies. The analysis was performed for frequencies from 6 kHz to just above 18 kHz.

Features

• True emulation of the analog BBD delay line
• Optional independent parameter control for each stereo channel
• Selectable L/R or M/S stereo processing modes
• Mistress mode allows the entire unit to operate just like the classic flanger
• LFO can be synced with your host application
• 3 different LFO-to-BBD clock curves
• Ultra-low aliasing output
• A very musical and pleasant sound.
• Tag-based browser
• Two alternative GUI sizes
• Full MIDI learn functionality
• 64-bit internal processing

System requirements

Windows

• Windows 7 - 10  (32 or 64-bit)
• CPU: 2.0 GHz single-core SSE (2.3 GHz multi-core SSE recommended)
• RAM: 8 GB (16 GB recommended)
• Plugin formats: VST2, VST3, AAX

Mac

• macOS 10.9 - macOS 12 Monterey  (64-bit only)
• CPU: Intel 2.0 GHz / Apple M1 (Intel 2.3 GHz / Apple M1 recommended)
• RAM: 8 GB (16 GB recommended)
• Plugin formats: VST2, VST3, AU, AAX

Please note:  this  is not a standalone program: a host application (DAW) is required to use it.