Eff ES

Download Eff

Download Eff to test our manually controlled tool for interactively measuring and correcting Loudness in Media files.

Register to download

Eff ES

Download Engine

Download Engine to test our Audio Server, capable of Loudness compliance, Dolby E transcoding, channel mapping and other functions.

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When you register to download our software, you will be sent an email asking if you wish to opt in to our general mailing list. If you opt in, we can send useful information that will support your evaluation, as well as keep you up to date on developments within our products. You do not need to opt in in order to evaluate our software. All emails sent as a result of opting in do contain an unsubscribe link at the bottom.

We require your contact details whilst you are evaluating our software so that we can help with any questions, and to ensure our software is configured correctly for your requirements. Do not download our evaluation software if you do not wish us to contact you regarding the evaluation.

Fill in the form below to request a trial

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Engine and Eff both display a dialogue of available options each time you open the application. Unless you know exactly which options you wish to test, we recommend selecting everything so that you have full access to all features. As you become familiar with the software you can then adjust the selection to those that meet your requirements.


All Emotion Systems products are quick and easy to install.


The following video describes the process for installing Engine on a Windows platform.

Mac OS

The following video describes the process for installing Engine on a Mac OS platform.

Evaluation Terms

Our evaluation software is fully featured, apart from expiring after a time. Evaluation licenses are provided for you to test the functionality, but you are not permitted to do commercial work with an evaluation license.

Mailing List

Please note that we never give away or sell any customer contact information, and our mailing list is only used to provide you with updates on our products and services. Please see our Privacy Policy for more details on how we process your data.

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