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Now you can have the very latest in native plug-ins to measure Loudness and True-Peak on mono, stereo or surround (LM6n) tracks in new versions of Pro Tools and other major DAWs. 

We've loaded the native LM2n & LM6n plug-ins with new dedicated settings, new viewing options, improved off-line measuring in Pro Tools - and a host of other new features. Of course they come with our innovative Radar Display, allowing you to capture the essence of your loudness landscape at a glance.


  • Innovative Radar Display

  • Compliant with All Loudness Standards

  • Runs Natively in Pro Tools and other DAWs

  • Off-Line Measuring in Pro Tools

New Low Price

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True-Peak Meter

Loudness measuring is based on subjective perception, so your program material can in fact overload if normalized the traditional way (quasi-peak or sample-peak). Therefore, normalization is also part of many broadcast standards, and to comply, you must use a true-peak meter.

A true-peak meter looks at the actual samples as well as inter sample peaks, which  means that it can unveil peaks that would otherwise cause distortion.

LM2n and LM6n help you get a precise reading that allows you to normalize your audio without compromising the quality.

Powerful Off-Line Measuring

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Pro Tools users will appreciate the off-line function, measuring your audio loudness faster than real time by running LM2n or LM6n as an Audio Suite plug-in.

Simply choose preset, select the audio clip you want to measure and hit 'Analyze'. That's it!

Watch this 30 second video to learn just how simple it is.

Ready for Any DAW

Music Programs

LM2n & LM6n support all modern plug-in standards, giving you the freedom to work with any DAW you prefer. 

  • AAX (Pro Tools 10 & 11, Media Composer 8.1)

  • VST (Nuendo, Cubase, Audition, Premiere, and more)

  • Audio Units (Logic Pro, Final Cut Pro, and more)

Normal and Big Radar Views

Radar Big


You can set the size of LM2n and LM6n to either 'Normal' or 'Big'.

The 'Normal' size is ideal when you're right in front of your monitor.

But you'll find The 'Big' size version perfect when you're running other systems and need to glance over at your radar from a distance.

The image here shows the 'Big' size version of the Radar Loudness Meter 1:1 in full size.


Detailed Loudness Statistics


Ever want to see all of the details you need to view in the same place?  The statistics page gives you a complete overview of your loudness parameters.


  • Program Loudness (I) - The Overall Loudness of Your Entire Program or Track
  • Max Short Term Loudness (S) - The Max Short Term Loudness Measurement Throughout Your Material
  • Loudness Range (LRA) Your Overall Program Material Range from the Softest Point to the Loudest
  • True-Peak Max - The Max True-Peak Measurement Throughout Your Material
  • Sliding Loudness 10 Sec - The Max Loudness Measurement within a 10 Sec Window
  • NEW! PLR - Peak to Loudness Ratio Indicates the 'Squash' Factor of Your Overall Material

Desaturated View

We've developed the desaturated view due to special requests from our users in the film industry.

While you would normally choose the full color version of the radar, film professionals prefer a desaturated view that does not take away focus from the visual side of their production.

Loudness Radar Meter Features

Radar View

Short Term Loudness History, 4 min per revolution, 6dB between circles

Loudness Target

True–peak warning

Loudness Unit


Time since Reset

Program Loudness (I)

(entire program)

Loudness Range (LRA)

(entire program)

Loud part

Short Term Loudness (S)

Soft part

Short Term Loudness (S)

Outer Ring

Momentary Loudness (M)

Custom Surround Channel Order (LM6n)


When changing views, you're never in any danger of altering your actual routing. Routing takes place inside the host application and is not user editable.




New Peak to Loudness Ratio Parameter


The New Peak to Loudness Ratio Parameter gives you a great way to get in touch with the transient limiting and clipping that would otherwise go unnoticed with Loudness Range.

PLR is also relevant when tailoring a track or a program to a certain amount of downstream headroom. For instance, ATSC A/85 and EBU R128 provide 22 dB of headroom, while Sound Check in iTunes offers 16 dB of headroom.

By keeping an eye on the PLR you will be able to preserve the quailty of your audio. If your PLR reading is low, your audio is squashed, but it will not gain loudness as it will be corrected at the point of transmission. In fact, a heavily compressed track will end up sounding softer than more dynamic tracks once the loudness has been corrected.

More Features

  • Complete Loudness Overview - Everything in a Single, Easy-to-Read Radar View
  • Complete Compliance - ITU BS.1770-3, ATSC A/85, EBU R128, TR-B32, OP-59
  • Faster Than Real Time Off-Line Measuring - Audio Suite Off-Line Measuring in Pro Tools
  • 24/7 Logging (LM6n only) - Document Delivery Specs for Major Broadcast Standards
  • Plug-in Formats - VST, AU, AAX and AudioSuite (PC and Mac)
  • Desaturated View - Perfect for Film Productions
  • Flexible Loudness History - Radar Speed from 1 Minute to 24 Hours per Revolution
  • True-Peak Metering - Ensures Audio Quality Downstream (data reduction, codecs, converters, etc.)
  • Universal Descriptors - Displays Any Two Parameter Values below the Radar
  • Detailed Stats Page  - Get A Quick Overview of All the Details
  • Retina Support - Supports high PPI graphical resolution

What's New?

What's new compared to the original LM2 and LM6 Native plug-ins?


  • Dedicated Max Momentary Loudness and Max Short Term Loudness Settings
  • Two Different Radar Sizes - Normal and Big
  • Improved Off-Line Measuring in Pro Tools
  • PPM Surround Channel Order View - Film, SMPTE/ITU or DTS
  • PLR - Peak to Loudness Ratio measurement
  • Desaturated Color for Film Production
  • No Physical iLok USB Key Needed - Use Your iLok or Your Computer
  • Updated Log File Format (LM6n)
  • Enterprise version for larger installs available
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Enterprise Solution

For large broadcast stations and production facilities, we offer LM1n, LM2n and LM6n in a special enterprise version.

The enterprise version allows you to install a large number of plug-ins with no need for iLok keys or even unique licenses stored on your computers. As an enterprise customer you even get your company logo integrated as part of the custom version of your plug-in. 

  • No unique licenses stored on local computers
  • Allows your IT department to centrally install many computers in one go
  • Corporate logo

To learn more about the enterprise solution (not available through the TC Electronic web store), please contact our Broadcast & Production Sales Team:

LM2n or LM6n?

LM2n and LM6n are almost identical. Both plug-ins give you super-accurate loudness measuring, normal and big radar views, faster-than-realtime AudioSuite measuring in Pro Tools and much more.

Only two things set them apart:

  • LM2n Supports Mono and Stereo - LM6n Supports Mono, Stereo and 5.1 Surround
  • LM6n Includes Logging of Loudness Stats. LM2n Does Not

So, if you need to work with 5.1 surround or need to log your loudness stats, LM6n is your best choice. 

Upgrade to LM2n or LM6n

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Ready for Any Application


Whether you are broadcasting for radio and TV, mixing film or producing music in the studio, you'll find that the LM2n & LM6n are ready to support your work like no other loudness meter:

  • Broadcast
  • Commercials and Jingles
  • Mastered for iTunes Criteria
  • Game Production Criteria
  • Delivery for iDevices
  • Delivery for Web
  • Audio CD Mastering

Try Before You Buy

If you want to take LM2n or LM6n out for a spin before buying, you can download a FREE 14-day demo version that allows you to check out all of the features hands-on.


  • 14-Day Trial Period

  • Fully Functional - NO Feature Limitations

  • No Physical iLok Key Needed


Download FREE Trial Version

Avid Media Composer

Media Composer Presets

The LM2n and LM6n loudness meters obviously support Pro Tools, but if you are in broadcast, chances are that you also use Avid's Media Composer. Therefore, we have included an option that allows broadcasters to create one or more custom presets that can be uploaded to a central network drive - it could be a preset tailored for radio, another for podcast, one for iTunes, etc. Now, only these custom presets can be chosen by the station's Media Composer users.

Keeping You Up To Date

We have been listened to by those actively setting broadcast standards - we've even donated our technology to many of the same international bodies that impact your broadcast work.  

Legislation on loudness in television is constantly evolving.  However, regardless of your location and no matter which TC Electronic Loudness units you use, we will always help you remain compliant with the latest revision of the broadcast standard that impacts your work.


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Loudness Website

Keeping track of the multitude of issues around loudness can be a challenge. That's why we've created a one-stop dedicated loudness website where you'll find critical information on the most important issues.

The site is an answer to the highly relevant question:
"What Is Loudness, and Why Is It Important?"

Visit the Loudness Website

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In the Press

There's a reason that world-leading broadcast magazine regularly invite us to share our knowledge: we've been pioneers in the digital audio world since 1985.

We've taken part in research studies and the definition of international broadcast standards right from the start, donating technology which has become a crucial part in new, open international standards.


Read The Articles Here


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