Product Status

Product status

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Is VST-RTAS Adapter a current, supported product?

VST-RTAS Adapter is no longer officially supported or developed - as such it is no longer available for purchase.

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General Information

Which versions of OS X is VST-RTAS Adapter compatible with?

10.3.9 to 10.6.8 should all run fine. Use later versions of OSX at your own risk.

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Will it work with Mac OS 9 VST plug-ins?

No. Your VST plug-ins must be Mac OSX-compatible.

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Will it work with PC VST plug-ins?


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Does it require a particular variety of Mac OSX VST plug-in?

There are two sub-formats of VST plug-in on Mac OSX: "Carbon-CFM" (which is closer to the original OS 8 / 9 VST format), and "Mach-O" (which fits in better with Mac OS X standards and Apple's future plans for the OS). The VST to RTAS Adapter supports both and works equally well with either.

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Does it support automation?

Yes. VST plug-ins' parameters are mapped to equivalent RTAS parameters.

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Are there any currently known compatibility issues?

VST 2.4

VST2.4 (or above) plugins are NOT supported. They work in many cases but they are not officially supported.

Mac OSX 10.5.x:

  • Adapter preferences are not saved correctly - however, the adapter still functions and wrapped plugins can still be used.
  • The buttons for loading and saving VST presets underneath the plugin interface are blanked out. The buttons do work, but they aren't visible.

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I have a plugin which comes with an RTAS version but it isn't working properly. Can I buy the VST-RTAS Adapter in order to use it successfully as an RTAS plugin?

You are welcome to do so, and the adapter will often run better than the manufacturer's own RTAS version.

However, we do not provide any support any plugin in such circumstances, and there will be no possibility of a refund if it doesn't work as you wish.

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Which versions of Pro Tools does VST-RTAS v2.1 support?

Pro Tools 7.x, 8.x including LE, M-Powered and TDM/HD versions Pro Tools 9 and 10 including Native and HD versions

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I own VST-RTAS v1 - how can I upgrade to v2?

v1 users can upgrade to v2 for $49.00 - please contact our support team for details.

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Does VST-RTAS v2.1 support Universal Binaries?

Yes. However, if you have a MacIntel computer (MacBook, Mac Pro, Macbook Pro, Intel iMac and Mini), you will need Universal Binary versions of any VSTs you wish to wrap, as well as a Universal Binary version of Pro Tools.

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Will FXpansion ever make an RTAS to VST wrapper (for using RTAS plug-ins in Cubase, etc.)

No. Such a wrapper is impossible for both technical and legal reasons.

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Does VST to RTAS Adapter v2.1 work with VST Instruments?


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What's the CPU and audio performance like?

The adapter itself has no impact on your audio signal and uses a negligible amount of CPU.

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Does it add any latency?

Not of itself - it's the same as regular RTAS plug-ins in that regard.

Certain VST plug-ins, especially those running on DSP cards, do add latency. Pro Tools TDM/HD automatically compensates for this latency ("Automatic PDC"), as does Pro Tools Native (versions 9 and 10).

Pro Tools LE and M-Powered do not automatically compensate for latency. However, you can easily view the total latency in the Pro Tools mixer and compensate for it manually.

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Does the adapter support multiple input channels?

No - the adapter supports the first stereo pair only, ignoring any others.

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Licensing / Copy Protection

What copy protection method is used?

VST-RTAS Adapter uses a simple serial number-based protection system.

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Do you allow license transfers?

Yes, however:

  • If you're the seller, you must contact us in advance of the sale. If you're the prospective second-hand buyer, you must check that the seller is cleared to sell. If in doubt, contact us.
  • There is a flat $50 fee per product for a license transfer, which can be purchased from our online shop.
  • Review copies, NFRs (Not For Resale copies, sometimes used for in-store demos), etc., cannot be transferred under any circumstances.
  • We reserve the right to refuse a license transfer request.

Once a transfer is authorised and the fee has been paid, the new owner is entitled to exactly the same upgrade paths and technical support resources as if they had bought the product new.

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Why is the License Transfer fee so high in relation to the cost of the product?

Our License Transfer fee is a set amount due to the very real costs of providing product support in the form of responsive technical support, bugfixes and new features, to the customers who buy our products. Product support is something we take extremely seriously, and is one of the reasons our products stand out amongst the competition.

We are happy to provide a transfer service for most of our products, but we cannot accept the liability of the costs of supporting a new user. If we were to provide free or very cheap license transfers, the prices of our products would have to be a lot higher, and it does not make sense to inflict this on the vast majority of customers who want to keep using the products and do not intend to resell them.

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