iZotope has built audio software since 2001, over two decades before generative AI became a marketing category, and RX is its flagship restoration tool: not a subscription web app but professional desktop software used in film, TV, and music post-production to fix audio problems too precise for a one-click automatic tool. It has won an Academy Award and multiple Engineering Emmys for its contribution to the industry.
Spectral repair is RX's signature approach: audio problems get visualized on a spectrogram, letting a sound engineer surgically remove a specific unwanted sound, a cough, a camera click, a dropout, without touching anything else in the recording. That level of manual precision control, alongside dialogue isolation and music rebalancing tools, is built for professionals fixing hard cases, not casual users wanting an automatic fix.
RX is sold as a one-time purchase rather than a subscription, starting around $99 for the Elements tier and rising to over a thousand dollars for the Advanced edition professionals actually use, with a free trial available to test it first. For a professional sound engineer working on film, broadcast, or music post-production who needs surgical repair tools rather than automatic cleanup, RX remains the industry-standard reference most competitors get measured against.
