MasterCheck and ISL 2st

Are you ready for this seismic shift in how your content gets heard? Loudness Normalization truly is the new normal. Find out how ready your content is for these platforms with MasterCheck, and then finish it with ISL 2st True Peak Limiter to ensure it reaches the listener as you intend it.


  • Music Industry Loudness & Dynamics tools
  • Produce for iTines, Spotify etc.
  • Check dynamics for playout
  • Compare to reference productions
  • Match loudness across FX chains


  • Pristine quality True Peak limiting
  • Prepare for online loudness normalisation
  • Unparalleled automatic transparency
  • Prevent distortion from down-stream codecs


MasterCheck immediately reveals how the consumer will hear your productions on todays music platforms. Mix and master to target and the quality of your audio will be assured all the way to the consumer with no nasty surprises after release.

Compare and contrast your productions with reference works and learn from the best. MasterCheck gives you the tools to evaluate your work and seize the competitive advantage by producing directly for the playout environment, allowing you to effectively utilize maximum dynamic range without compromising on loudness or risking distortion introduced by mp3 or AAC compression.

MasterCheck instantly de-mystifies loudness normalized playout systems, showing you the effect of compression on your audio so you can immediately determine how much is enough and by using loudness matching, exactly what is happening to the transients etc. as the compression increases.  Now you can quickly find the point beyond which playout systems kick into effect, putting you back in control of how your productions will sound.

ISL 2st

World class limiting is an essential requirement for any audio production, and the latest standards also demand true-peak compliance. ISL 2st delivers both, giving you superb sound with complete confidence about meeting new standards for online delivery.

ISL 2st is a stereo-only version of ISL2, designed and streamlined for music & production. ISL 2st is an intelligent look-ahead brick-wall limiter that provides highly transparent True Peak limiting for all stereo & mono content.  It is designed to allow you to get on with creative audio production while it takes care of true-peak compliance for you.  It delivers content fully compatible with loudness normalization standards used by iTunes Radio, Spotify and many others. The risk of distortion from down-stream codec conversion (mp3, AAC etc.) is eliminated with ISL 2st on the master bus. 

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.

The pristine quality true-peak limiting in ISL 2st includes Apple ‘Mastered for iTunes’ true-peak detection, the stanradt ITU algorithm suitable for the control of audio for Music & Post Production applications.  

This combo package of the industry leading tools, MasterCheck & ISL 2st, offer you a turnkey method to ensure you’re ready for the new world of loudness normalization in online content delivery.

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MasterCheck and ISL 2st

  • Brand: NUGEN Audio
  • Product Code: MasterCheck and ISL 2st
  • Availability: Pre-Order
  • R3,530.82