Protection Type
an iLok Dongle is required
Windows Requirements
  • Host application compatible with:
    • AAX DSP plugins
  • Windows (64-bit) Vista or above
  • 512 MB RAM
Mac Requirements
  • Host application compatible with:
    • AAX DSP plugins
  • Mac OSX 10.9 or above (not yet compatible with macOS Big Sur / Monterey)
  • 512 MB RAM
ISLst with the AAX DSP option for HDX ProTools
This is for those ISL ProTools users who have AAX DSP cards in their system. it also includes support for using the ISL in 96k sessions

ISL 2st is a transparent look-ahead limiter designed to allow you to get on with creative audio production while it takes care of True Peak compliance for you.

ISL uses the standardised True Peak algorithms of ITU-R B.S. 1770 and related standards (including Apple ‘afclip’ True Peak detection), and is suitable for the control of audio for post production, music mastering and broadcast applications. True Peak limiting can also be used to ensure that downstream codecs (mp3, AAC etc.) do not introduce distortion into the signal.

• Mix and master for music streaming services
• Produce broadcast compliant audio
• Transparent end of chain limiting
• Apple 'afclip' inter-sample monitoring
• Protection for downstream data compression
• Preserving quality for podcast material
• Inter-sample clip management in hi-res files
• Loudness compliance
• Audio for video production

ISL 2st DSP - Avid HDX hardware compatible edition

Product Features

Powerful processing :
  • TPlim control that automatically adjusts transfer curve parameters
  • Auto-release monitors incoming audio for low frequency content that dynamically adapt preventing distortions
Innovative visualisations:
  • Unique steering and ducking meters preserving directional integrity or atmospheric ambience
  • New processing enhancements that increase transparency
For music production:
  • Made for today's music delivery services (Apple Music, Spotify, Tidal etc.)
  • Mix and Master without downstream distortions
For post and broadcast:
  • Meets latest True Peak compliance standards
  • ITU-R B.S. 1170-4 compliance and a dedicated brick-wall TPlim setting
  • Loudness Toolkit has been included in the audio tool category of Netflix’s Production Technology Alliance.


Mixing in surround with ISL and SEQ-S Video
Mixing in surround with ISL and SEQ-S
00:03:30 by NUGEN Audio Jul 14, 2020
Learn how in this video how to mix in surround with Nugen Audios plug-ins. ISL is a True Peak limiter which supports up to 10 channels of audio. SEQ-S is a spline EQ with a resizable, direct-draw...
An introduction to True Peak limiting Video
An introduction to True Peak limiting
00:04:17 by MusicMarketingTV Aug 14, 2017
Audio dubbing editor and mix engineer Mike Thornton explains True Peak limiting and gives an overview of the ISL interface and operation.


OS : Mac OSX Mac OSXWindows Windows
Formats : AAX DSP
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