VSL Synchron Duality Strings (Sordino)

Strings Virtual Instrument

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    Digital Products

    Digital Products are delivered electronically either via your order status page, or via email.

    No physical product will be shipped to you!

    In most cases, the product you purchase from us is a serial number/license code/activation code to register the product with the manufacturer and download directly from them. This ensures you receive the latest version of products, and the best support when necessary.

    After purchase, your license code and relevant links will appear on your order status page, or they will be sent to you by email.

    For detailed instructions on the registration/download process, you can visit our dedicated page by clicking here: Install Instructions.

Education Proof

Products with education pricing are for students & teachers only. To prove your education status we require that you upload proof in the form of an image/PDF.

Types of proof


Student ID Card, Letter of enrollment, or similar


Teacher ID Card, Lecturer ID Card, Payslip, Letter from the school/college

Education proof is submitted to the manufacturer and is accepted at their discretion.

The Basics

iLok is a copy protection method used by many of our brands.

It has 3 types of activations, iLok USB, iLok Machine, and iLok Cloud.

Different brands/products will offer different iLok methods. iLok USB is always an option, but the availability of iLok Cloud and iLok Machine methods is at the discretion of the software developer.

iLok Account

For all iLok protected products, you will need an iLok account. You can create one for free here: ilok.com/#!registration

iLok License Manager

To manage your iLok licenses, there is a dedicated app called iLok License Manager. This app is used to register, activate, and move your licenses between locations.

You can download the latest installers from the iLok website: ilok.com/#!home

iLok USB Key

iLok USB

This activation is stored on an iLok 2 or 3 USB key.

It is the best option for portability, if you frequently move between multiple machines, and offline use.

iLok Machine ID

Machine ID

This activation is stored locally on your computer.

While this is a convenient way to work offline, and does not require the additional cost of an iLok USB, there is the risk of a license being lost in the case of a drive failure.

This option also requires extra care when you upgrade to a new computer, the license(s) must be deactivated on your old machine first to ensure you do not lose them.

iLok Cloud

iLok Cloud

This activation is based online, and requires a "cloud session" using the iLok License Manager.

It requires an active internet connection for the entire time you use the plugin(s).

When "Muted" Means More Expression

Add another layer of expression and sonority to your small and large string sections with these muted string ensembles, recorded exactly the same way as the first installment in the Duality Strings series.

While the large ensembles played their instruments in Stage A, the small ensembles simultaneously played in the dryer Stage B of Synchron Stage Vienna, performing perfectly in sync, with a beautiful velvety timbre that’s still bursting with variety.

Sordinos massively expand the sound palette of string instruments, especially string ensembles.

Considering that the volume of the instruments is only slightly reduced, playing with mutes is not synonymous with "playing quietly".

Rather, sordinos evoke a change in the frequency and sound spectrum that multiplies the possibilities of instrumentation, as the great orchestrators and composers have impressively demonstrated since the end of the 19th century.

Section Sizes

Stage A

  • 14 1st Violins
  • 12 2nd Violins
  • 10 Violas
  • 10 Cellos
  • 6 Basses

Stage B

  • 8 1st Violins
  • 6 2nd Violins
  • 5 Violas
  • 5 Cellos
  • 3 Basses

Changing the instruments' sound also has a decisive influence on the attitude of the players.

Musicians instinctively react to each other’s sound and the overall sonority of the ensemble.

Passages played "con sordino" (with mute) will, therefore, always be clearly different from "senza sordino" (without mute) passages, even when a sordino effect is artificially applied to the recordings.

The musical feeling and expression of first-class musicians make all the difference beyond the mere placement of a piece of plastic or wood on the bridge of an instrument.

Consequently, this sordino collection is not just a reduced version of the non-sordino recordings.

Continuing in the vein of Vienna's Duality principle, each sordino articulation was recorded immediately after its non-sordino counterpart.

The objective was for users to activate or deactivate sordinos without creating a difference in expression, resulting in a continuous, coherent performance.

This means all the articulations of Duality Strings (regular) are also available with Duality Strings (sordino), except for snap pizzicato.

If you have both the regular and sordino collections of Synchron Duality Strings installed, the "Merged" Preset combines "senza sordino" and "con sordino" articulations, making it easy to switch and keep an overview of all available articulations.

As in the first Duality Strings installment, the large and the small ensemble were sampled at once, playing in separate rooms, with the conductor on the podium in Stage A also directing the ensemble in Stage B via video monitors.

While the mic setup in Stage A delivers a broad string ensemble sound, the smaller ensemble in Stage B was recorded closer with two different sets of microphones, offering bright and dark-sounding variants.

This enables you to customize your own string sound organically and effortlessly within the Synchron Player.

Of course, you can also rely on the expertly crafted mixer presets, ranging from close and classic to wide, distant, lush and more.

Microphone Setup - Standard & Full Library

The Standard Library and Full Library of Synchron Duality Strings (sordino) both include the same articulations.

The difference lies in the number of provided microphone positions:

Stage A

Standard Library

  1. Solo Mic (mono)
  2. Mid Mic (L/R)
  3. Main/Room Mic - Decca Tree Stereo (L/R)
  4. Main/Room Mic - Decca Tree Mono (Center)

Full Library

  1. Solo Mic (mono)
  2. Mid Mic (L/R)
  3. Ribbon Mic (L/R)
  4. Main/Room Mic - Decca Tree Stereo (L/R)
  5. Main/Room Mic - Decca Tree Mono (Center)
  6. Main Surround - Stereo (L/R)
  7. High Stereo (3D) - Stereo (L/R)/li>
  8. High Surround (3D) - Stereo (L/R)

Stage B

Standard Library

  1. Dark Mics (L/R)

Full Library

  1. Dark Mics (L/R)
  2. Bright Mics (L/R)

System Requirements

  • MacOS 10.14 Mojave and above
  • Windows 10 and above (64-bit only)
  • Intel, AMD, or Apple Silicon CPU
  • 8GB RAM or more (16GB or more recommended)
  • Free iLok account and iLok License Manager
  • iLok Cloud and iLok USB licensing methods are supported

Plugin Formats

AAX Native, AU, VST2, VST3, and Standalone

Crossgrade Proof

This crossgrade is for owners of a competing DAW. To prove your DAW ownership, we require that you upload proof in the form of an image/PDF.

Types of proof

A copy of your purchase receipt for the original license or the most recent update/upgrade

A screenshot of your product registration

A photo of your package (either CD/DVD or printed manual), with the unique serial number included in the photo.