How long trial versions last?

Our trial versions do not have time limits.

Are there some limitations in the trial versions?

Our trial versions are identical to the full versions, except that a 5 seconds white noise is played back every 40 seconds, and presets can't be saved.

Can I install your products on multiple devices?

You can install our products on as many devices as you like, but you have to authorize each of them following the procedure described here.

How can I authorize a product that I've purchased?

Authorize your device in 4 steps:

1. Open your plugin and click the key icon in the top right corner.

2. In the authorization window, copy your device’s code.

3. Log in to your APFX account and paste the code mentioned in step 2.

4. Download the license and load it in your plugin.

You can find more detail on the dedicated page.

Can I get a refund?

No, it's not possibile to get a refund. You can learn more on our refund policy page.

Is there any warranty on APFX products?

APFX products are provided "as is" and any express or implied warranties, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose are disclaimed. In no event shall APFX Srls be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused andon any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of this software, even if advised of the possibility of such damage.

Do I have to accept an EULA in order to use an APFX product?

Yes. You can read/print/save the full EULA in our products installer.

Is there something I shouldn't do with an APFX product?

Yes, as stated in our EULA you are not permitted to:

- Edit, alter, modify, adapt, translate or otherwise change the whole or any part of the products nor permit the whole or any part of the products to be combined with or become incorporated in any other product, nor decompile, disassemble or reverse engineer the products or attempt to do any such things.

- Reproduce, copy, distribute, resell or otherwise use the products for any commercial purpose. This includes, but is not limited to, the distribution on magazine covers or software review websites. No license is granted to redistribute the software as part of another software program, including video games, DAWs, etc.

- Allow any third party to use the products on behalf of or for the benefit of any third party.

- Use the products in any way which breaches any applicable local, national or international law.

- Use the products for any purpose that APFX Srls considers is a breach of its EULA agreement

I'm experiencing issues while purchasing one of your products, what do I need to do?

Don't worry! You can contact us through the form at the bottom of this page, or send an email to .

Can I share my APFX products with my friends and/or other users?

No, you can't. APFX products license is personal and not sharable. You can install them on as many devices as you want, as long as you are the owner of these devices.

Can I buy APFX products from other websites?

No, we do not have any partnership with third-party resellers. If you come across a website selling our products, please report it to


What are the required specs to run APFX products?

0S Compatibility: MacOs 10.14 or newer, Windows 10 or newer.

System Requirements: X86-64 or Apple Silicon CPU with SSE / NEON support, at least 4GB RAM and 10Gb of free disk space.

I hear an intermittent noise, what can I do?

This is a limitation of the trial version: a ‘hiss’ sound will play every 40 seconds. If you have already purchased the plugin, you can learn how to authorize it here.

Why my plugin does not run?

Check the minimum requirements in the product page and make sure your device meets them.

No sound in the Standalone version

  • Be sure to give the required permissions during the installation procedure

  • The audio input may be muted: if you see a yellow banner on top of the plugin saying "Audio input is muted to avoid feedback loop" press "Settings" on the right of the banner, then uncheck the "Feedback loop" box

  • Make sure your audio interface is set up correctly. Learn more on how to set up your audio interface: Video Tutorial

After a reboot the plugin goes back to trial mode, what I need to do?

This is a known problem of PRIMO 1.0 on some specific Windows PC. PRIMO 1.1 solves that issue. All you have to do is to upgrade (for free) to PRIMO 1.1 (download from here), go to Documents/PRIMO and delete all the license files (.apkey), and finally repeat the authentication procedure one last time.

What are the supported sample rates?

APFX products can be run at 44.1 kHz, 48 kHz and 96 kHz sample rate. 192 kHz support will be added in the future.

I hear some latency while I play, what can I do?

Try reducing the buffer size. This option is available in the settings of the standalone version of our products, or in your DAW.

Learn more on how to set up your audio interface: Video Tutorial

On macOS the installation procedure ends with an error, why?

During the installation of a new audio plugin, sometimes macOS starts scanning all your plugins, and if you have another plugin with an expired trial, the procedure will fail and also the installation will end with an error. To avoid that, remove plugins with expired trial versions.

Why do I hear also my DI signal along with the processed one from the plugin/standalone app?

You have probably enabled the "direct monitoring" feature on your audio interface, you have to disable it in order to hear only the sound coming from the DAW/standalone app.

Why can't I see my presets and IRs?

Presets and IRs are stored in your documents folder, check that your DAW has the correct access rights to read/write from that folder.

The Tuner hardly recognizes the higher strings, what can I do?

If this happens, probably your input level is too low. Check the input meter, it should be green while playing open chords. If it's blue then your level is too low and you should increase it with the "input gain" control or directly on your audio interface.

Plugin added to the Blocklist in Cubase | Apple Silicon

Make sure you are using the Apple Silicon Native version of Cubase. When you open Cubase in the loading window you'll be able to read what version you are running in the bottom left corner: if you read "Rosetta" please visit this page and follow the procedure.

I get the "Missing VCRUNTIME140_1.dll" error, what do I need to do?

It's a common problem, you just have to install the missing DLL. You can install the latest version from here: Download DLL

How can I use my OSC/MIDI device with your plugins?

You can learn how to connect and use your external controller here.

No MIDI in Standalone

First of all open the settings windows and check that your MIDI controller is enabled. Learn more here.

Try to disable and enable it again, or restart the Standalone app.

I'm experiencing issues while using one of your products, can I get some help?

Don't worry! You can contact us through the form at the bottom of this page.

How can I update to the latest version?

To install a new update, follow these steps:

  1. Download the installer from the Downloads page.
  2. Run the downloaded file.
  3. Follow the guided procedure to complete the installation.

Did you not find what you were looking for? We have a playlist on our YouTube Channel with tutorials and how-tos about APFX products. Check it out or drop us a message using the form below!


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