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Synchron Player

Free with each Synchron Library
Synchron Player
Synchron Player Synchron Player
Synchron Player by Vienna Symphonic Library (VSL) is a Virtual Instrument Audio Plugin for macOS and Windows. It functions as a VST Plugin, an Audio Units Plugin, a VST 3 Plugin and an AAX Plugin.
Windows 7/8/10 (latest update, 64-bit), Intel Core 2 Duo or AMD Athlon 64 X2
SSD (M2, Sata 6 or USB3/3.1 UASP Support) for sample content
8 GB RAM (16 GB or more recommended)
AU/VST/AAX Native compatible host (AAX version requires Pro Tools 10.3.5 or higher)
macOS 10.10 (latest update) or higher, Intel Core 2 Duo
SSD (M2, Sata 6 or USB3/3.1 UASP Support) for sample content
8 GB RAM (16 GB or more recommended)
AU/VST/AAX Native compatible host (AAX version requires Pro Tools 10.3.5 or higher)
Copy Protection
eLicenser (USB)
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The Vienna Synchron Player is a dedicated sample player with an audio engine built from the ground up. Combining multiple microphone signals with a wealth of note variations and velocity layers for each articulation may quickly lead to a quite heavy voice count and CPU load. The Vienna Synchron Player comes with the most powerful sample playback engine, featuring unprecedented streaming performance while providing a new level of ease-of-use.

Innovative algorithms result in utmost realism and expressiveness: You may play short notes, long notes with various attacks, legatos, scalable vibrato intensities and note repetitions intuitively just by moving one or two preconfigured controllers, with a minimal need to switch articulations manually. The Vienna Synchron Player also includes a full fledged internal mixer with 5-band EQ, individual delay settings for runtime compensation, algorithmic reverb, phase switching, panorama controls as well as a host of effects such as saturation, delay, compressor, auto gain and many more.

The Vienna Synchron Player is included as free software with all Synchron Series products, the Vienna Smart Orchestra and Vienna Smart Spheres.

8-dimensional Synchron Player
The one and only sample player on the market with eight or even unlimited dimensions. Dimensions allow you to add any freely controllable musical parameter to any Synchron Series preset, resulting in incomparable versatility.

Streaming Performance
The look-up-function is up to 32 times faster than with conventional sample players. This improved look-up function is the backbone of the Synchron Player's unrivaled multi-microphone performance. All samples are linked to their corresponding microphone positions which improves access-times dramatically and allows for minimal latency. Up to 31 microphone channels (Synchron FX Strings I) provide infinite options to create a unique sound.

Out of the Box
Tailor-made mixer presets - ready to play. Easy access to authentic room impressions of Synchron Stage Vienna – from close to distant microphone positions.

Inspiring Elements
The new Synchron Player offers an intuitive work-flow for epic masterpieces and delicate soundscapes. Simple navigation: Instrument presets with consistent structure throughout all instruments will boost your creativity.



  • Ultimate overview of all available articulations with the Synchron Player Dimension Tree provides unlimited control of all musical parameters of your instruments.
  • Pre-configured instrument presets for intuitive playing in real-time with quick authentic results.
  • A virtually unlimited number of simultaneously controllable dimensions multiplies the concept of the legendary Vienna Instruments' matrix structure.
  • Design your own preset structure in a heartbeat. Copy and paste slots from existing structures.
  • Categorize articulations in musical "dimensions" to adjust the interface to your personal work-flow.
  • Create unheard-of articulations and soundscapes by stacking and crossfading between instruments and articulations.
  • Intuitive and consistent color-coding makes orientation and navigation a breeze.
  • Layer Articulations for simultaneous or crossfade performances in one preset.
  • Keyboard display offers 128 keys with labelled key switches and additional information.
  • Free-floating Key Info Window showing all assigned ranges and micro-articulations.

Sound & Mixing:

  • A wide array of microphone positions from close microphones to the Decca Tree to multiple spatial outrigger microphones allows for meticulous fine-tuning of your mix.
  • Multiple mixer presets offer a great choice from CPU-friendly layout mixes to highly specialized Surround-to-Stereo downmixes and immersive surround mixes.
  • Highly musical playback engine that provides you with the correct note transitions for each articulation (built-in legato and repetition logic).
  • Each mic channel is equipped with dedicated EQ, Runtime Delay, Reverb Send and PowerPan/Balance controls in the integrated mixer.
  • User-friendly routing options to create busses and stems.

Technical Features Player:

  • Intelligent instrument scripts with Performance Detection:
  • Interval Detection – Provides natural intervals and note transitions for legato playing styles in real-time.
  • Polyphonic legato when playing chords using Legato Patches.
  • Repetition Detection – Lets you play natural repeated notes at any speed.
  • Speed Detection – The tempo of your performance automatically triggers the appropriately articulated samples and switches seamlessly between articulations.
  • A minimal need to switch articulations manually.
  • The established Velocity XFade lets you crossfade between all available velocity layers of each articulation.

Technical Features Mixer:

  • Intuitive routing options with setup templates for Vienna Ensemble (included) and Vienna Ensemble Pro (available separately), with dedicated microphone busses for all instrument sections.
  • Innovative algorithms provide utmost realism and expressiveness.
  • Built-in algorithmic reverb for immediate sweetening effect.
  • Surround capability (5.1 up to immersive surround sound formats).
  • Intuitive Retina-ready scalable GUI with inline documentation.
  • Plug-in (VST, AU, AAX Native) under Windows and OS X.
  • Full 64-bit audio processing.
  • Enabling/Disabling of slots – Load huge presets with hundreds of articulations in no time, and without taxing your RAM. Specific articulations get loaded only when you "enable" their slot with a simple double-click. Disable slots to clear samples from RAM, while keeping all patch settings intact.
  • "Enable on MIDI Activity" feature loads only the articulations you need for your arrangement, on the fly.
  • SSD ready – Load 10 times more samples into your RAM, 10 times faster, by reducing the sample preload buffer size when using Solid State Drives.
  • Real-time CPU-Meter provides instant reliable feedback from your computers processing unit. Warning will pop up if you reach the performance limit.
  • Super-fast loading times, even after cold starting. Load progress bar. You can even play the loaded samples while the rest is still loading.
  • Lossless real-time de-compression for using less RAM and hard disk resources.

Latest User Reviews

Average user rating of 0.00 from 0 reviews

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Comments & Discussion for Vienna Symphonic Library (VSL) Synchron Player

Discussion: Active
28 June 2020 at 7:17pm

yes, you have to purchase a usb dongle to make this free player working, and you need a soundbank that must be purchased ! .....better forgot these company, don't belive that i am able to have fun with those crappy products .

28 June 2020 at 11:08pm

It's for pro user so you are right.

29 June 2020 at 2:03am

the problem is that this useless player is listed under freeware, but you are not able to bring some noise out of it, without spending some money. so how can you give this fake 5 stars under this aspect ?


19 December 2021 at 8:04am

VSL loat me as a user — a PRO user — when I discovered that it is impossible to assign different MIDI channels to different instruments in a single instance of the player. If you want to write for, say a viola on MIDI channel 1, violin on channel 2, and cello on channel 3, you have to load three separate instances of the player into your DAW, on three separate tracks. That's idiotic. If you have to do that, you don't need different MIDI channels in the first place.

What's worse, first VSL support acted like they had no idea what I was talking abouit...as though no would ever want to do that. Then, when they finally admitted they understood, they said, "Oh...you need to buy Vienna instruments Pro for that..." But that was a lie; it still doesn't let you assign different MIDI channels to different instruments in a single instance of the player. Then they said, "Ah...what you really need is Vienna Ensemble Pro..." But no; that's not a solution either; it still requires you to clutter up your DAW with multiple tracks...and it's a CPU hog into the bargain.

I like all the articulations, and I think their sampling is superb, as are all the features of their software...but their MIDI implementation is so primitive it's maddening. It's really a shame that such great sounding instruments are shackled to such a horrifyingly limiting MIDI implementation. I would have bought every instrument in the library if it weren't for that. Alas, now I never load even the ones I own into my DAW. I wanted to love VSL, but it turned out to be a waste of money.

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