Sample Libraries
» Sigmund really blew my mind as it goes far beyond a standard delay plug-in «
» D16 Group is one of the most innovative tools to date. «
» When I think of D16, two things come to mind. The first is great, professional grade sounding plugins. The second, is not only intuitive, but fun interfaces. «
» All plugs of D16 are powerfull and if you like big sound as i, use Lush-101! «
» I love the rich bold quality of your plugins. «



Four independent delay lines

Sigmund is far from just another delay: it consists of four discrete delay units, each with its own, independent set of parameters offering an incredible degree of sound-shaping freedom. There's an ancient saying, often attributed to Aristotle: The whole is greater than the sum of its parts. With Sigmund, this is especially true: each of the delay lines has complementary modules built in, independent from the feedback loop:
  • Multi-mode Filter (can work either in or outside of the feedback loop)
  • Overdrive module
  • Amplitude modulator (for tremolo effects)
But that's not all: Sigmund has two general-purpose Modulators which can be used to auto-modulate some of the delay lines' internal parameters. There are three different modes a Modulator can operate in:
  • LFO - Used subtly on time parameter can delicately bring a sound to life, to add gently flowing, modulated warmth reminiscent of the analog delays of yesteryear. At extreme settings, the LFO is capable of twisting the input signal utterly beyond recognition and into what you might expect transmissions from an alien civilization to sound like!
  • Envelope - In combination with built-in Transient Detector gives you a very powerful tool; when applied on amplitude allows to freely shape sound’s dynamics to control how it blends in the whole mix..
  • Peak follower - It’s a must-have for a Modulator; nothing else will do such expressive wah-wah effect, when filter cutoff is influenced by. Surely in the hands of skilled sound designer it will have many other applications beyond that.
This all adds up to an immensely powerful architecture, the potential of which can be explored nearly endlessly and often with hardly predictable outcomes.

Flexible routing

Sigmund's four delay lines can be interconnected with each other in practically every manner possible. The plugin offers a choice of nine different routing topologies which give access to completely new dimensions of sound creation. For example, say you have your delays currently running in parallel but would like to have a cascade of serially connected delays instead: you can reconfigure them instantly by choosing your desired algorithm with just a click of the mouse. For even greater convenience when working with Sigmund, the output signals of each of the four delay lines are combined in a special, purpose-built internal mixer to ensure seamless transition between algorithms and greatly speed workflows.

Oustanding quality

The signal processing solutions we chose to implement in Sigmund have allowed us to achieve an unprecedented level of audio quality! A signal being routed sequentially through each processing block suffers no loss in fidelity from one to the next and no undesirable artifacts are introduced as is so often the case with some of the more widely used but inferior solutions. With Sigmund, each delay line is absolutely alias free: the only sonic colorations you'll ever hear are the ones you've intentionally created.
The signal path design process that went into Sigmund has been zero-comprimise from beginning to end: in fact, the sound quality is so high, the processing so pure that it's possible to work with even the smallest delay times, even down to one-tenth of one millisecond with zero artifacts emerging. Thus, it's possible without any tricks or half-measures to use a single delay line not only as a traditional delay effect, but also as a chorus or flanger and in some of the highest audio quality theoretically possible!

Intuitive design

Sigmund's user interface has been designed from the ground up to be as intuitive as possible. Everything is presented as if on a silver (or brushed aluminum) platter, cleanly and clearly laid out and with instant access to each section and it's parameters. A convenient preset browser allows for quick auditioning of the extensive, included factory preset library. This, in combination with a novel system of 'padlocks' for locking individual sets of parameters when changing presets, allows you to zero in on the desired effect with extreme efficiency. In skilled hands, these features become powerful weapons.

Sound examples


Recording Magazine, February 2014
» Dieses Plug-in richtet sich vornehmlich an Sound-Schrauber, die nach neuen Wegen suchen, um Aufnahmen interessant und lebendig klingen zu lassen. Was nicht heißt, dass Sigmund sich nicht auch schnell einsetzen ließe: 200 Presets stehen hierfür bereit. «
Future Music, February 2014
» impressively versatile plug-in with a comprehensive list of applications, from straight stereo, M/S or mono delays, to tight flanging, phasing and chorus, to distortion and filtering. And with its clear layout and smart preset browser, learning your way around it takes minutes. In a market awash with quality delay plug-ins, Sigmund is up there with the best of them. «
MusicTech Magazine, December 2013
» Sigmund can be a highly creative and fluid plug-in to use [...] A sonically interesting delay machine with many different potential applications for mixing and sound design. «
Beat, January 2014
» Das Plug-in punktet miteinem erstklassigen, lebendigen Klang, einer äußerst flexiblen Architektur und einem hohen Bedienkomfort. So zeigt es sich nicht nur für einfache Echos, sondern auch für vielschichtige rythmische-Delays sowie markante Filter-, Zerr- und Modulationseffekte und komplexe Kombinationen gewappnet. Klasse! «
Computer Music, December 2013
» None of this would count for a great deal if Sigmund didn't sound good, but we can say without hesitation that Sigmund is one of the most stunning plugins we've heard in a long time. Warm and smooth, it reeks of attention to detail, exemplified by the total lack of audible artifacts even at ultra-short delay times. There's a strangely organic precision to the sound: no matter how crazy things get, it never falls off the edge of the cliff [...] It's one of the most luscious delays around. «
SoundBytes Magazine, November 2013
» The real star of the show is the collection of presets that are packaged with Sigmund. There are a generous number of them, to say the least. [...] This is one hella flexible effect, no doubt about it. «
Buenasideas, September 2013
» Auch wenn dieses Plugin jetzt keine wirkliche Revolution darstellt, so bringt SIGMUND doch deutlich mehr an Features mit, als die übliche Schwemme an Brot- und Butter-Delays.

Dabei klingen nicht nur die einzelnen Komponenten wie Filter, Overdrive und Verzögerungseinheiten für sich allein gut, sondern auch im komplexen Zusammenspiel. Merkmale wie die Modulation der Verzögerungszeit oder die M/S-Bearbeitung findet man eh nicht überall, und die Rücksetzung der LFO-Phase mittels MIDI-Noten habe zumindest ich bisher bei keinem anderen Delay vorgefunden. «
Pluginhunter, September 2013
» Wer ein Standard-Delay sucht ist hier an der falschen Stelle. Sigmund bietet nämlich eine ganze Menge mehr. Von einfachen Verzögerungseffekten bis hin zu komplexen Verfremdungen des Sounds, mit diesem Plugin bleiben keine Wünsche offen. [...] Für alle die auf neue frische Sounds stehen und diese auch selbst gerne gestalten wollen ist Sigmund genau das richtige. (full article you can find here) «, September 2013
» Sigmund is a very high quality plugin that delivers extensive modulation capability along with a true, realistic sound. (full article you can find here) «


Multitude of purposes

Sigmund can be effortlessly applied in nearly any configuration in the studio. It can be used as an insert effect for an instrument or bus channel, or as a versatile send effect with the help of a parameter lock that allows for auditioning presets without having to readjust the wet/dry mix with each new selection. The plugin can be used universally not only as a delay, but also as a:
  • Tremolo
  • Filter
  • Limiter
  • Distortion
Each of these possibilities above is a result of the direct usage of the various modules that we have at our disposal in the processing path. But also indirectly, depending on parameter values, there are other possibilities, including:
  • Chorus – from small delay time values
  • Flanger – from small delays with feedback added
  • Spatializer – by applying delays on delay lines with different signal domains (M/S or L/R) and phase shifts between the channels
  • Mastering / Bus dynamic processor - Setting modulators working as transient triggerable envelopes affecting signal’s amplitude it’s possible to control the dynamics very precisely.
Despite all of the facts presented in this brief description, you get much, much more, because these are only examples of Sigmund's most basic operation. With the benefit of an incredibly flexible signal routing system, these simple strategies can be freely shuffled and combined for practically unlimited sound shaping depth. Things can go from basic to very advanced indeed before you know it, and more easily than you perhaps considered possible. And, all this in the highest available audio quality! This is only the start of wonderful sonic journey you’re about to embark on...


» Sigmund sets an example of what other companies should be doing when writing a "new" effects plugin. It's creative and unlike anything else, and that uniqueness sets itself aside from other delay effects and really allows the composer to go the distance with experimenting in sonic production. If all new music software products were this well done, I'd never actually sleep. «

Benn Jordan aka The Flashbulb

» The D16-Audio products give me the look and feel of analog gear in simple but effective plug-ins. I especially like to use the D16 - Sigmund delay software in my productions to get a warm "analog-like" saturated sound and for special Delay FX. «

Franz Plasa /
» D16's Sigmund is an excellent, high quality, easy to use plugin. The retro 1980's DX style interface is clean, simple, and conveys a feeling that spandex mini-skirts and DeLorean Motor Cars will soon make a comeback. The AU installed smoothly and opened in both Digital Performer and REAPER. Sigmund sounded detailed, solid, and highly professional. Great job, D16! «

Dr. Sigmund Rothschild

Video clips

Sigmund 1.1 Video
more comming soon...

Full Features

  • 4 independent delay lines, each with:
    • Multimode filter
    • Overdrive unit
    • Separately configured pre and delay times with optional Tempo sync.
    • Delay times down to 0.1ms
    • Tap function for unsynchornized delay line
    • Selectable channel mode (L+R or M+S)
    • Stereo spread
  • High quality delay line alghorithm
    • No aliasing or artifacts
    • 4 selectable grades of processing quality
  • Two multipurpose Modulators:
    • Selectable Modualtor type (1 of 3 available):
      • LFO
        • Tempo synchronization as an option
        • 6 Invertible waveforms
        • Stereo Phase shift
      • ADHSR Envelope
      • Peak Follower
    • MIDI retriggering for LFO and Envelope type modulators
    • Transient detector for retriggering LFO and Envelope type modulators
  • Flexible Routing (9 possible topologies)
  • Convenient mixer
  • Master Limiter
  • Presets
    • Over 300 factory presets
    • Advanced, file-based preset browser
  • Miscellaneous
    • Advanced MIDI learn
    • Parameter mapping for VST / AU / AAX automation with default map included
    • Indepentend quality settings for real-time and offline modes

System requirements


OS: Windows 7, Windows 8, Windows 8.1
CPU: 1.8 Ghz with SSE (Multicore system 2.1 Ghz recommended)
RAM: 2 GB (4 GB recommended)
Software: VST / AAX compatible host application (32bit or 64bit)


OS: 10.7.x or 10.8.x or 10.9.x
CPU: Intel based 1.8 Ghz (2.1 Ghz recommended)
RAM: 2 GB (4 GB recommended)
Software: AU / VST / AAX compatible host application (32bit or 64bit)

It's not a standalone program so you need a host application to use it.
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