EAReverb is 100% algorithmic. It does not use any IR files. Early reflections are built “on-the-fly” depending on your own settings. The size parameter has an impact on early reflections and late reverb… Switching from magesy download a size to another will immediately put your music or sounds in a place that matches your choice. Then you can tweak early reflections using 5 easy parameters + 15 advanced but still comprehensive settings. Finally, you can set the late reverb so it matches your needs. BNC and Warp settings will add the extra randomness your late reverb deserves.