The modern Ozone uses IRC IV, V, and "Magnum." However, the older in Ozone 5 is famous for transparent peak limiting. It doesn't pump as hard as modern limiters, but it preserves transients on acoustic drums and piano better than any current algorithm. For folk, jazz, and classical producers stuck on older Macs, this is essential.
The EQ section in Ozone 5 was a masterclass in precision. Utilizing iZotope’s 64-bit signal processing, it offered pristine audio quality with zero latency. It featured a hybrid interface that allowed for both paragraphic and parametric editing. izotope ozone 5 advanced v5.05b macosx k 39-d