Frequently Asked Questions

Product Support

If you need help installing or using any of our software, installing activation key files, or you just want to find out how to get the best from a product email us and we will get back to you as soon as possible. You may also find your question has already been answered in the Frequently Asked Questions below.
Normally your question will be answered promptly by the developer directly responsible for the product.

Host Applications and Plugin Formats:

1. Which formats are supported?
Our plugins are currently available in the following formats:
  • VST 32 and 64Bit for Windows 7 or later.
  • VST3 64Bit for Windows 7 or later.
  • AAX Native 32 and 64Bit for Windows 7 or later.
  • AudioUnit 32 and 64Bit for macOS v 10.8 - 10.14
  • VST 32 and 64Bit for macOS v 10.8 - 10.14
  • VST3 for 64Bit macOS v 10.8 - 10.14
  • AAX Native 32 and 64Bit for macOS v10.8 - 10.14
Please be sure to check the product download page for specific system requirements and supported formats to ensure compatibility before purchasing an activation code.
2. Which Host applications are compatible?
We test the software with most popular host applications for example:
  • Steinberg Cubase / Wavelab etc.
  • Sonar X3
  • Logic Pro X
  • Pro Tools
  • Reaper
  • Harrison Mixbus
  • energyXT
  • Renoise
The plugins are free to download in demo mode so you can test compatibility with the intended host application(s).
3. Do I need a host application?
The Windows and Mac plugins are not currently available as standalone applications, however plug-ins for linux may include a standalone JACK compatible version where indicated.

Operating System Requirements:

1. Which operating systems are suitable?
Our products are available for Windows, macOS and Linux. Please check the compatibility requirements on the product download pages and be sure to check compatibility using the free demo version before purchasing an activation code.
2. Are there plans to support other operating systems?
Yes. We are always interested in evaluating new platforms and operating systems for our software.


1. What are the evaluation version limitations?
In evaluation or demo mode the effect will bypass and the level will drop momentarily or fade to silence every 60 seconds. To remove this restriction you will need to purchase an activation key.


1. My budget is very limited, can you offer me a personal discount on your products?
As a small company, we understand that resources can be limited, however as set out in our terms and conditions, prices are not negotiable. We do our best to provide our products at the lowest prices we can, and with prices starting at around £30, when compared to the investment in other equipment also necessary for high quality audio production, we feel it is a very small amount to ask for a professional quality product. Software is not free to develop, distribute or maintain.
2. Do you charge subscriptions for your products?
No. You pay a single fee to activate (remove the demo restrictions from) a product. In some cases we may charge an additional amount for subsequent optional feature additions, plug-in formats and upgrades. Compatibility updates are normally free of charge, as of course are bug-fixes.

Online Payments:

1. What payment methods do you accept?
Payments are managed via a third-party secure online store, payments are possible via PayPal and most major credit cards.
2. Payment disputes
We take our responsibilities to customers very seriously and will always try to resolve any problems promptly and professionally.
If you have bought a product in error, or you believe the software to be unsatisfactory, please Contact Us with a brief description of the problem and if possible the operating system / host application. We are normally able to resolve any issues promptly, and we will normally issue a refund if the problem cannot be resolved, however we strongly recommend testing compatibility using the free demos, before purchasing the product.
3. Chargebacks
Chargebacks should be considered an option of last resort. Please Contact Us if you believe the product does not meet expectations or if you have had problems downloading / installing activation key files.
We are responsive to any perceived problem with our products, and will normally issue a refund if we cannot resolve such issues satisfactorily.
Resorting to measures such as a chargeback does not help us resolve the issue promptly or improve the product, and may impact adversely on the customer if it is subsequently proved that such action was taken deliberately to obtain the product under false pretenses.

Product Delivery:

1. How are your products delivered?
You can download the software for free, but for products that require an activation key, you will have to purchase the key, and you will then be provided with a link from which to download the key. This link is normally only valid for a limited number of downloads and / or a limited time. If you have trouble downloading or installing the activation key, please Contact Us and let us know.
2. I purchased / downloaded my activation code, how do I use it?
  • First you need to make sure you have the free demo version of the plug-in installed. These can be found / downloaded for free via the product pages.
  • To remove the demo restrictions you need an activation key. When you purchase an activation key, you are provided with a link from which to download it.
    Note: The link is time and use limited so please ensure you keep personal backups of your downloaded files and activation keys.
  • The activation key is supplied as a .zip file. This .zip file contains your license_key file(s)
    and instructions for installing them so as to activate the plugin and remove the demo restrictions.
Note: Mac OS X Safari users may find that Safari automatically unzips the downloaded activation key file. It may be more convenient to switch off this option via Safari's preferences. However, if your activation key file has already been unzipped automatically, check your Downloads folder for your license_key file(s). and installation (.pdf) instructions.
3. My purchased download link hasn't arrived yet.
We aim to deliver your activation key download link via email as soon as possible after your purchase is complete. If you still have not received your activation key after 24 hours, please contact us or email us directly at and we'll be happy to help resolve any problems.


1. I updated my host application(s) on Mac OS X and the plug-ins have reverted to demo mode
This is most likely caused by 'sandboxing' of some recent host applications for Mac OS X, especially those delivered via the Mac app store.
You should first obtain the latest versions of the OverTone plug-ins from the product download pages. You may then need to re-install your OverTone plug-in activation codes:
If necessary, click the locked padlock icon on the plug-in GUI to navigate to your license_key file for the plug-in or drop the license_key file onto the plug-in GUI.
This may need to be repeated the first time you use the plug-in with a different host application. If you have problems installing activation codes or plug-ins, refer to the documentation included with the latest downloads, or Contact Us stating the operating system version, host application, plug-in and a description of the problem.
2. Is there any copy protection?
No. You can make as many copies of the software as you like for your own use, but you are not permitted to distribute them.
3. Can I distribute the software?
You need to contact us first and obtain a distributors license. Typically, if you wish to include the software as part of a non-commecial product for which you make no charge, we will allow inclusion of the demo versions at no cost, but we would normally require that you provide a link to our site or publish our site URL in promotional literature. If you want to include the software as part of a commercial product then we would normally negotiate a per-unit fee.
4. How many machines can I install the software on?
For personal use, whether commercial or non-commercial, you can install it on any computers that you own, the activation key is not tied to one machine. If you are representing a commercial organisation and would like a site-wide license, please contact us to agree terms.
5. Can I share my activation key?
No. Publication or distribution of any keys will be viewed as an attempt to distribute the software which is expressly forbidden under the terms of the license.


1. How do I install my activation key / code?
When you purchase an activation key, you will be sent a link from which to download the key. Information contained in the download explains how to install the key and activate the plugin. If you experience problems, Contact Us providing details of the plugin, operating system and your purchase / invoice ID.
2. Can you replace lost activation codes or software?
We will re-activate download links to purchased activation codes if possible (or in the event of a failed download), but we do not guarantee to replace lost activation key files or software. Links to activation codes are time and usage limited as a necessary security measure. Please ensure you keep a backup of any purchased keys and treat purchased software with the same care as you would physical hardware.
3. How best to resolve a problem or get help with the software?
We take our responsibilities to customers very seriously and will always try to resolve genuine problems promptly with helpful and professional product support.
We welcome constructive comments which will help us improve the software, and we accept that evaluation can be subjective (which is why we provide a demo for evaluation before you decide to buy).
We are responsive to constructive criticism, and will issue refunds if a product or activation code is deemed not fit for purpose, or where genuine problems cannot be resolved satisfactorily. However, while we respect the right of anyone to express an opinion about the products in an informed and reasoned manner, we reserve the right to take necessary action to defend the company's reputation against defamatory and / or provably false allegations made on public forums or in other media.
4. How do I know your software is genuine?
As of V2.1.x we provide code-signed installers for our Windows compatible software. Installers are signed Verified Publisher: Applied Computer Music Technologies Ltd.
As of V2.0.x we provide gate-keeper signed installers for our Mac compatible software.
Signed installers verify the original publisher of the software, and provide important protection against subsequent unauthorized modification of the software.
We cannot take responsibility for software distributed though other sites, and while we cannot guarantee that our software is completely fault-free, we test it thoroughly, within the limits of our resources. We do not knowingly provide or distribute defective or malicious software.


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