Acustica Audio provides a legitimate way to test the plugin on your Mac without any cost for one month. Create an Account : Register for a free user account on the Acustica Audio website Download Aquarius : Install the Aquarius Desktop application
While Acustica Audio Ruby 2 is a commercial plugin, you can get a free download for Mac through various sources. Here are a few options: Acustica Audio Ruby 2 For Mac Free Download