Logo acustica 2017

ACQUA - Scarlet4


SCARLET4 is a VST/AAX/AU plug-in suite specifically tailored for mastering engineers. It brings you the sound of two celebrated, specialized mastering devices designed in the '70s by two legendary pioneers, considered the most ingenious minds in the field of music recording technology. These two specialists joined forces to create the first parametric equalizers to ever appear on the audio market. Given how rare these models are, there is no sum of money large enough to persuade their lucky owners to part with their beloved unit.

The transparency of their sonic trademark and the quality of their electronic and mechanic components wholly justify the reputation these tools earned over the years: military-grade rotary switches, precision resistors, proprietary discrete op-amps, without any capacitor on the signal path.



Scarlet4  represents the natural evolution of our acclaimed Scarlet plug-in. To further meet the needs of demanding mastering engineers, we included two different EQ models: SCARLET4 EQ and SCARLET4 CLASSIC EQ, thus ensuring greater flexibility and the highest level of sonic excellence. Learn more in the User's Manual here.



  • Create a user account (if you do not have one yet) on our website
  • Download and Install Aquarius, our products manager, for either Mac or PC
  • Log in to Aquarius using your user email and password
  • Type the product name in the 'search' field inside Aquarius to find the '(trial)' version of the product, then click on the thumbnail or on the 'Install' button. This will take you to the product page (the trial version of a product is also visible in the 'related products' section on the right)
  • Select the right plugin format according to the DAW you are using and click 'Install'
  • Aquarius will download, install, and authorize the trial product automatically
  • Run your DAW. You're set!


  • The old trial authorisation method - which required the 'LASTTRIALS' code - is now obsolete and each trial version of a product can be easily downloaded/installed directly from Aquarius, for a more streamlined process
  • Should you see an authorisation error, the reason could be that the product has been already authorised too many times and the limit has been reached

For details about installation/authorization please refer to this page


Core14 AI introduces our breakthrough AI Deep learning (IRIS™) technology. Learn about all the new implementations here.

*Early-access / Crazy-access / Discount pricings are introductory, time-limited discount periods during which the plugin may be subject to further refinements and minor updates, for better performance and extended compatibility. All updates and bug fixes will be available inside Aquarius under the 'Updates' section.
All other trademarks and trade name mentioned in this page are used for identification purposes only and are properties of their respective owners.


ACQUA - Scarlet4

  • LIST PRICE: €169.00
Cookies help us deliver our services. By using our services, you agree to our use of cookies. Learn more