upgrade to

ISL 2 


World class, broadcast quality limiting is an essential requirement for any audio production, and the latest standards also demand true-peak compliance. ISL delivers both, giving you superb sound with complete confidence about meeting the standards.

No need to second guess your sample-peak limiter time and again, or deliberately increase headroom to avoid a downstream problem. Just dial in your true-peak limit and let ISL take care of the rest.


Pristine quality true-peak limiting

ISL 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 ‘Mastered for iTunes’ true-peak detection), and is suitable for the control of audio for Post Production and Broadcast applications. True-peak limiting can also be used to ensure that down-stream Codecs (mp3, AAC etc.) do not introduce distortion into the signal.

Powerful Processing and Visualisations


With unique Steering and Ducking meters, ISL2 guides you to the perfect settings. Whether you are preserving directional integrity, atmospheric ambience or taming a surround centre channel, ISL2 gives you the information and control you need to achieve your objective with ease. New processing enhancements assess the incoming audio for frequency content and automatically take care of those minor adjustments required when LF content drives the limiter, delivering increased transparency whilst maintaining our renowned reputation of intuitive operation.



Post Production & Broadcast audio

Audio Mastering

Loudness compliance

'Mastered for iTunes' intersample clip monitoring

Protection for downstream compression

Preserving quality for streaming/podcast

Inter-sample clip management



Transparent True Peak Limiting

Adjust adjustable look ahead

Two stage, non-linear adaptive algorithm

Adjustable channel linking

Includes iTunes True Peak option


Standard compliant

Compatible with ITU-R BS. 1770

True brick-wall limited output

Mono through 7.1 surround compatible


Clear, intuitive operation

Intelligent adaptive algorithm

Clear metering

Multiple diagnostic listen modes


Reliable metering

Accurate, standard compliant I/O metering

Precise direct numeric maxima

Adjustable ballistics and colour splits



Supported Standards

Our loudness products are compatible with all recommendations and guidance based upon the international standard ITU-R B.S. 1770, revisions 1, 2 and 3 including:



EBU R128

EBU R128 S1




Portaria 354



Available formats

We support AAX, VST, VST3, AU and AudioSuite in both 64-bit and 32-bit versions. RTAS is also available as 32-bit only.


Minimum System Specification

Mac OSX 10.6.x, 512 MB RAM

Windows XP or above, 512 MB RAM

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ISL 1 upgrade to ISL 2

  • Brand: NUGEN Audio
  • Product Code: ISL 1 upgrade to ISL 2
  • Availability: Pre-Order
  • R1,403.82