Tone2 Saurus4

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True analog sound with state-of-the-art features!

Saurus can do an extremely authentic emulation of analog synthesizers. It covers all important aspects of the most famous and expensive analog synths, but without their disadvantages.
Saurus comes with a clear, easy to use interface. It offers a larger sonic range and a more flexible synthesis engine than conventional subtractive synths. Saurus is not limited to emulating analog imperfection. It is also is capable of creating high-end quality subtractive sound. All that without placing heavy demands on your CPU or budget. At the heart of Saurus are it’s top-notch oscillators employing our True Analog Modeling Technology ™, which produces a warm characteristic sound of the hardware units from the past. With  PWM, Sync, Noise, Ringmod, AM & FM an extremely broad range of sounds can be dialed-in. Saurus offers a selection of both standard and exotic oscillator types from hard-to-get analog synths. Unlike conventional synths the PW knob is not limited to squarewaves – it allows you to morph any kind of wavefom. Finally, true analog sound no longer requires any compromises!


True analog sound requires an excellent filter that’s capable of sounding both lush or screaming when overdriven. However, analog filters are far from perfect. They suffer from distortion, noise, phase shift and self-oscillation. Exactly these imperfections add this magic character, which is missing in digital filters. That’s why Saurus comes with a filter section which models the most famous analog filters. With precisely modeled non-linearity and self-oscillation they sound and behave exactly like the analog circuits. To top it all off the filter section also includes FM, feedback and an analog-modeled distortion for that little extra grit.
Arpeggiator & Gate
We created an arpeggiator that doesn’t just offer the basic note step functionality. It takes the concept further by adding features such as custom patterns, chords, swing and per step velocity. Your arpeggio sequence can be as simple or complicated as you wish.

Modulation & Effects

By using drag & drop or the matrix, Saurus allows you to connect dozens of modulation sources to sound parameters. Modulate almost any parameter up into the audio-rate speed. We’ve also included midi-learn, so assigning CC’s is as simple as a right-click.
To compliment its sound, Saurus features various classic effects such as 4x unison, chorus, delay, reverb and tube amp. All effects offer the highest quality possible.


Saurus offers 7 different microtuning-modes that can model analog oscillator-drift. Furthermore, the engine can slightly detune certain voices to make your chords sound fatter, harmonically rich and warm. Unlike with conventional synths, our innovative microtuning is not limited to the usage of a certain tonality. Saurus is able to analyze your melodies in real-time and enhances your chords automatically. It ‘just works’ – you do not need to take care of anything.
What sets Saurus apart from conventional analog emulations?
  • Great value for money (includes 1022 presets)
  • Larger sonic range than competing analog emulations
  • Contains also exotic oscillator-types from hard-to-get analog synths
  • Breathy sounds can be created with FM/AM noise modulation
  • Pulse-width-modulation is possible with all wave-forms (not only square-wave)
  • Filter with self-oscillation, analog saturation, feedback and FM
  • 4x stereo unison
  • Drag & Drop modulation
  • Very low CPU consumption
  • Chords can be enhanced automatically
  • Flexible mod-matrix
  • Created by a DSP expert with 25 years of experience
System requirements
PC: Windows XP / Vista / 7 / 8 / 10 / 11 (32 bit or 64 bit)
Plugin formats: 32-bit VSTi, 64-bit VSTi, VST3, Standalone
Mac: macOS 10.12 or higher / macOS 11 / macOS 12 / macOS 13
32bit Intel or 64bit Intel or M1 or M2
Plugin formats: VSTi, Audio Unit (AUi), VST3, Standalone, Universal Binary
Native support for M1 and M2
User-friendly copy-protection: No dongle, no cloud, no need to be online


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