VSL Synchron Duality Strings (Regular)

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).

Two Ensembles, Two Rooms, One Limitless Experience

A Common Question - What do you do if you want your string ensemble to sound closer, more direct, maybe crispier?

You raise the close-mic faders, which features the section leaders more prominently in your mix, but that pulls unwanted focus toward fewer instruments.

You actually want the entire ensemble to be closer, without losing its breadth and depth.

So you try layering differently recorded sample libraries, but their performances don't match, and it's nearly impossible to create a cohesive result.

Wouldn't it be great to have wet and dry, large and smaller recorded ensembles available in the same player, with recordings of two separate string sections performing in perfect sync?

A Unique Solution - Enter Synchron Duality Strings

Once again, Vienna Symphonic Library is breaking new ground with a unique library that offers unprecedented possibilities.

Synchron Duality Strings comprises two string ensembles that were sampled at once, playing in separate rooms at Synchron Stage Vienna.

While the larger ensemble played in the famous main hall, Stage A, the smaller ensemble was recorded in the relatively dry Stage B.

Both ensembles performed together, with the conductor on the podium in Stage A also directing the ensemble in Stage B via video monitors.

With the musicians' ability to hear each other from different rooms, all musical aspects of every performance are perfectly in sync, such as volume, timbre, vibrato, note length, and phrasing, for every articulation.

Thanks to Synchron Stage Vienna's unique size, flexibility, and technical capabilities, Synchron Duality Strings is the realization of what other library companies can only dream of.


  • Two acoustically isolated string ensembles performing simultaneously at Synchron Stage Vienna
  • Large ensemble recorded on the iconic Stage A (14 1st Violins, 12 2nd Violins, 10 Violas, 10 Cellos, 6 Basses)
  • Smaller ensemble recorded in the smaller, dryer Stage B (8 1st Violins, 6 2nd Violins, 5 Violas, 5 Cellos, 3 Basses)
  • Use them in combination or separately
  • Available with combined mic options and mixer presets
  • Seamlessly blend the large broad ensemble with the closer-miked small ensemble
  • Comprehensive collection of articulations

Create Your Own Blend

While the mic setup in Stage A delivers the broad, sought-after string ensemble sound featured in countless movies and TV series, the smaller ensemble in Stage B was recorded with two different sets of microphones, offering bright and dark sounding variants.

This unique approach gave Synchron Stage Vienna's chief engineer, Bernd Mazagg, the ability to create mixer presets with unprecedented flexibility and creative options.

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

Beyond the wholly different ambiences of the two spaces, the ensembles themselves provide useful contrast.

Where the larger ensemble has a fuller, more symphonic sound, the smaller ensemble provides a transparent and clear tonality that adds a certain polish when blended with the larger group.

Both ensembles feature Vienna's best musicians from the renowned Synchron Stage Orchestra, performing at the highest levels of musicality.

Extensive Articulations, Easily Accessible

Articulations include a wide variety of short notes, long notes, various legato variations (normal, agile, slurred, portamento), espressivo, with various attacks and note releases, plus pizzicato, col legno, tremolo variants, fast repetitions, trills, harmonics, glissandos, legato and détaché runs, and much more.

In addition to the Synchron Player's usual articulation switching capabilities, there's now a new category of preconfigured patches that allows you to switch articulations using key velocity, e.g., between spiccato and staccato, between different attacks of détachés and long notes, between up and down movements of glissandos and runs, etc.

This extensive collection delivers the best of both worlds - a large ambient string ensemble, and a dry chamber-sized ensemble, with 100% matching performances.

Regardless of how you use them, in combination or separately, Synchron Duality Strings delivers a magnificent sound with unprecedented flexibility and countless expressive possibilities, from intimate intensity to passionate power, and everything in between.

  • Download File Size: 102 GB
  • Installed File Size: 242 GB

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)
  • 242GB free storage space
  • 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.