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Four Independent Delay Lines

Four delay units in one box for expanding sound-shaping capabilities beyond imagination.

High-Quality Delay Line Algorithm

To have delay times precisely adjusted in a very wide range, which makes the unit being multi-purposeful. Delay, Chorus, Flanger? You name it!

Multipurpose Modulators

Different types of modulation can be applied to several delay lines' parameters via two multipurpose modulators.

Flexible Signal Routing

All four delay lines can be arranged in 9 different ways changing the signal flow between them.

Make Final Touches

Using convenient built-in delay line Mixer and exquisitely sounding limiter. 

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    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 a seamless transition between algorithms and greatly speed workflows.

    Outstanding 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-compromise 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

    Frequency responses comparison of Electric Mistress stompbox and Antresol for whole variety feedback values. All tests were performed using white noise as source signal and calibrated spectral analyzing software.

    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 Key Features

    • 4 independent delay lines, each with:
      • Multi-mode filter
      • Overdrive unit
      • Separately configured pre and delay times with optional Tempo sync. o Delay times down to 0.1ms
      • Tap function for unsynchronized delay line
      • Selectable channel mode (L+R or M+S)
      • Stereo spread
    • High-quality delay line algorithm
      • No aliasing or artifacts
      • 4 selectable grades of processing quality
    • Two multipurpose Modulators:
      • Selectable Modulator 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
      • Independent quality settings for real-time and offline modes

    Operating System

    Mac, PC



    Bit Depth

    Windows: 32-bit & 64-bit, Mac: 32-bit & 64-bit


    VST, AU, AAX

    Mac Hardware Requirements

    Intel based 1.8 GHz (2.1 GHz recommended),  4 GB RAM (8 GB Recommended)

    PC Hardware Requirements

    1.8 GHz SSE (Multicore 2.1 GHz recommended),  4 GB RAM (8 GB Recommended)

    Mac OS Requirements

    OS X 10.7 to OS X 10.15

    PC OS Requirements

    Win 7, Win 8, Win 10

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