“Sienna Free is a FREE “light” version of our renowned Sienna Acqua plugin suite, “which is the most extensive and carefully crafted selection of plugins that Acustica has ever created. You can download and authorize it for free using Aquarius Desktop.
This plugin contains:
- Sienna Rooms
- Guru plugins
- HOG Sun218 sub room
- Over 180 headphone emulations from the world’s most popular brands, which we carefully measured and profiled.
Sienna Free does not contain the other additional features that are included in the full commercial version of Sienna. For more details, please consult the Sienna user’s manual.
Note: While this plugin is compatible with the commercial version of Sienna (Volume A), we strongly advise owners of the full version of Sienna NOT to install and download Sienna Free, as it may cause your product to downgrade.
Source : acustica-audio.com
really need to test it