IZotope Ozone 9 + Neutron 3 Advanced. Mix and master with confidence at any level. Save 30% when you get Ozone 9 and Neutron 3 Advanced together on Rent-to-Own. IZotope is an audio tech company based in the United States (Cambridge, Massachusetts), iZotope has played a huge role when it comes to sound design, sound /audio recording, broadcasting, overall in last several years iZotope has played a huge part in mixing and mastering software VST plugins which are currently used by a wide range of DAW (Digital Audio Workstations). Ozone 5 Complete Mastering System. IZotope's complete mastering system in a single integrated plug-in includes eight essential mastering tools: Maximizer, Equalizer, Multiband Dynamics, Multiband Stereo Imaging, Post Equalizer, Multiband Harmonic Exciter, Reverb, and Dithering. The process of mastering ranges from correcting mistakes made in the mix to preparing a recording for target listening environments.