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iZotope RX 8: New Audio Repair Features Explained

Gear & SoftwarePublished 2020.10.09Updated 2026.07.18
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In this 2020 overview, we explore the audio repair tools introduced in iZotope RX 8 for music production, podcasts, and other recordings. Highlights include Spectral Recovery for synthesizing missing high-frequency content in bandwidth-limited speech, Guitar De-noise for three types of guitar-related noise, and Wow & Flutter for correcting pitch variations caused by unstable playback speed. These tools can help with tasks ranging from improving online meeting recordings to cleaning up guitar takes. Features vary by edition: Spectral Recovery and Wow & Flutter are available in RX 8 Advanced.

More Innovative Audio Repair Tools

iZotope RX 8 overview

Here, we take a look at the main new features and improvements in RX 8, the major update to iZotope’s audio repair software released in 2020.
The video covers the following features:

  1. 1Spectral Recovery: Improve Bandwidth-Limited Audio
  2. 2Guitar De-noise: Target Guitar-Related Noise
  3. 3Wow & Flutter: Correct Pitch Wobble in Tape Recordings
  4. 4Loudness Control: Quickly Adjust Loudness
  5. 5Improved Music Rebalance

Let’s look at each one in the video below.

iZotope RX 8 New Features: Video

  1. 1RX 7: An Introduction
  2. 2Reducing Breaths and Other Noise
  3. 3Reducing Noise, Reverb, and Clipping
  4. 4iZotope RX 8: New Features Explained
  5. 5iZotope RX 9: New Features Explained

Product Links (Affiliate Links; Original RX 8 Listings)

iZotope RX 8

Frequently Asked Questions

Q1. When is RX 8’s Spectral Recovery useful?

It is useful for low-quality speech recorded through online meeting services such as Zoom or Skype, or material whose high frequencies have been removed by bandwidth limits or lossy compression. In RX 8 Advanced, it estimates and synthesizes missing high-frequency content to improve intelligibility. This is not an exact recovery of the original lost information.

Q2. What types of guitar noise can Guitar De-noise address?

Its Amp, Squeak, and Pick sections address amplifier hum or buzz, string squeaks, and excessive picking or plucking attacks. Each has separate controls, allowing you to reduce unwanted sounds while aiming to preserve the performance’s character. The result depends on the material and settings.

Q3. When would I use Wow & Flutter?

Use it to correct pitch variations caused by unstable recording or playback speed in analog media such as tape or vinyl transfers. Wow refers to slower variations and flutter to faster ones. The module, included in RX 8 Advanced, is useful when restoring recordings that contain this kind of pitch instability.