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Mastering by NUGEN Audio

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Sound on sound 120
"It has already become a default plug-in on the master bus of everything I now mix in the DAW - it really is a tool I couldn't work without! Very highly recommended."
. Sound On Sound is the world's biggest and best audio recording & production magazine, established since 1985.
Huskyhoskulds 120 pluginboutique
"For me, the biggest draw for MasterCheck and NUGEN Audio's Visualizer Suite are their high degree of customizability for both the GUI and the specs. I have two instances of Visualizer and one of Master Check on all my sessions, which gives me several different metering, analyzer, and RTA options along with different meter ballistics and different scales."
. Groundlift Studios.
Musictech 120
"It's always been crucially important to meter your audio properly during the mastering process, but as technology changes the rules of the game shift... MasterCheck Pro is incredibly important for mastering engineers or anyone producing music for broadcast."
. The world's most practical music recording and production magazine.

Mastering for Today's Digital Music Services

Mix and Master for the listener - directly to Apple, Spotify, DAB Radio and TV specifications, MasterCheck will immediately reveal how your audio is going to sound to the listener, allowing you to produce with confidence and certainty.

MasterCheck is the complete solution for optimising your mixes for today’s music delivery services. Streaming apps, download stores, websites and podcasts all use data compression, loudness matching or both. These processes can affect your mixes in various undesirable ways: your loud punchy mix could end up quiet and flat, or suffer clipping or distortion. The good news is you don’t just have to mix for CD and hope for the best. MasterCheck reveals problems ahead of time, and enables you to deliver masters perfectly tuned for specific playout systems.

Cross Platform Mastering

How do people listen to the music you mix? You work hard to deliver masters that sound great at home, in the car or on earbuds, but that’s only half the story. How does your mix sound on Spotify, Apple Music or Google Play? What about YouTube, digital radio, or Beatport? MasterCheck will show you; giving you a unique advantage and enabling you to take back control of the listening experience. You’ll instantly hear how your tracks are affected by loudness matching algorithms on different devices and services, and you’ll know how your masters respond to different codecs and bandwidths.

One Plug-in, Complete Toolset

MasterCheck gives you the tools to make sure your mix reaches the listener sounding as you intended. Industry standard meters show the Loudness and PLR (dynamic range) of your mix and how they compare to your target platform. Loudness auditioning reveals any level changes and compression that will be applied. External reference auditioning and metering lets you A/B your master FX chain with other music or your uncompressed mix. True Peak Metering ensures you’re within the delivery spec and guarantees you’ll stay clip-free at later encoding stages. Real-time codec auditioning previews your mix through different encoding schemes and quality settings.


Playout services have a ‘letter box’ through which they deliver your audio. If you’re lucky it slides through; if not, the service will force it to fit .A heavily maximized master might win the loudness war on CD, but could simply be turned down on your music service or player. This leaves valuable headroom you could have used for transient detail and punch. With MasterCheck’s Loudness and PLR features you can find the sweet spot between perceived loudness and dynamics, perfectly tuning your master to the format.


The major online music services and stores encode your music in various formats, often using different bit-rates depending on your device or account type. Encoding “hot” mixes can often introduce true peak overs that will clip on playback. MasterCheck will detect these errors, allowing you to stay within a safe limit. You’ll also be able to hear any obvious frequency masking or other artifacts, and try to mitigate these effects at the mixing and mastering stages.


  • Preview for digital music services
  • Balance Loudness & Dynamics
  • Audition encoding in real time
  • Master for Spotify, Apple etc
  • Match referencing mixes
  • Ensure clip-free encoding
  • PLR/PSR Metering


  • Music Mastering
  • Mastering for digital music services
  • Mastering for podcasts and digital radio
  • Codec distortion detection
  • Loudness and dynamics comparison with reference material
  • Apple AAC iTunes+ codec support

Music Mixing

  • Dynamic Range Measurement
  • Loudness matching across album tracks
  • FX chain auditioning with matched loudness
  • Preparation for Mastering

Service Presets:

  • Spotify
  • Apple Music
  • YouTube
  • Pandora
  • BBC iPlayer
  • Tidal
  • TV Europe
  • TV USA
  • TV Japan
  • AES
  • DAB+ Radio

Industry Standard Metering:

  • Program Loudness
  • Short Term Loudness
  • PLR (Peak to Loudness Ratio) dynamic range
  • ITU compliant inter-sample peak

Realtime Preview:

  • Loudness Adjustments (Level Trim and Peak Limiting)
  • Audio Codecs

Reference & Comparison:

  • Simultaneous metering of reference track with mix
  • Reference monitoring (A/B)
  • Loudness matching
  • A/B Pre/Post Mix Master FX with matched loudness

System Requirements

Minimum System Specification:

  • Mac OSX 10.7.x, 512 MB RAM
  • Windows XP or above, 512 MB RAM

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, 3 and 4 including:

  • ATSC A/85 (CALM ACT)
  • EBU R128
  • EBU R128 S1
  • ARIB TR-B32
  • OP-59
  • AGCOM 219/9/CSP
  • Portaria 354
  • DPP

Supported Audio Codecs:

  • HE-AACv1 (AAC+)
  • HE-AACv2 (DAB+)
  • Ogg Vorbis
  • AAC-LC

Available Formats:

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

Any references to any brands on this site/page, including reference to brands and instruments, are provided for description purposes only. For example references to instrument brands are provided to describe the sound of the instrument and/or the instrument used in the sample. Plugin Boutique do not have (nor do they claim) any association with or endorsement by these brands. Any goodwill attached to those brands rest with the brand owner. Plugin Boutique or its Suppliers do not accept any liability in relation to the content of the product or the accuracy of the description. "RHODES" is a registered trademark of Joseph A Brandstetter.

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