iZotope RX Advanced is one of the most advanced toolsets for editing and repairing audio tracks. With the help of the program we can, among other things, remove noise or selected frequency from the audio, eliminate clicks and crackles, as well as rebuild distorted sound. The application offers a number of tools for marking the audio signal in the spectrogram. This allows users not only to edit audio based on the sounds they hear, but also to use their sense of sight. Available options include tools such as time and frequency selection, a laso tool, a magic wand and a brush that allows you to precisely mark the audio signal on the amplitude spectrum chart. iZotope RX Advanced by default offers such plugins Denoise, Declip, Spectral Repair, Declick & Decrackle, Remove Hum RX 2 Advanced adds an Adaptive Denoise mode, Deconstruct and Azimuth Alignment, Spectrum Analyzer, EQ or Gain. The functionality of the application can be extended by installing additional VST and DirectX plug-ins. In practice, iZotope RX 2 Advanced can be successfully used for such tasks as music recording, audio post-production in the film industry, audio quality improvement during telephone interviews, audio processing from cassettes and vinyl records, etc. The iZotope RX 2 Advanced can be used for a wide range of applications such as recording music, audio post-production in the film industry, audio quality improvement during telephone interviews, audio processing from cassettes and vinyl records, etc. In addition, the program is equipped with the ability to mass edit audio files and a task schedule to streamline the process of editing multiple soundtracks. An unquestionable advantage of iZotope RX is that it supports multiple cores during data processing. The Advanced version offers the following additional features in comparison to its younger brother: features for exporting history to XML file, iZotope 64-bit SRC, advanced noise cancelling functions and support for third-party plug-ins.