HoRNet LU Meter

Make sure your loudness is right!

HoRNet LU Meter screenshot

The HoRNet LU Meter is a digital loudness meter with auto gain staging and grouping functions, the handy and logic GUI hides an intelligent tool that will improve your gain staging and mixing.

LU Meter is based on the concept of Loudness Units, a way of measuring audio that takes into consideration the human perception of sound so that the same level at different frequencies produces different reading on the meter.

HoRNet LU Meter implements the momentary reading from the EBU R128 standard and applies the concept of “auto gain” to that measurement type, making sure that the signal never exceeds the chosen LU level auto gain can be calculated using the meter’s momentary reading or the EBU R128 integrated loudness measurement, to be able to normalize the track to a specified average LU level.

LU Meter offers both separate meters for left and right channels (not EBU standard compliant) and a standard mode with both channel summed.

Since this meter measures loudness single peaks may exceed 0 dBFS when auto gain is applied, for this reason we added a safety “peak protection”. If the gain applied brings the peaks above the chosen safety level, it’s adjusted so that those peaks are the chosen value at maximum.

While the default calibration of the meter is set to -23LUFS (Loudness Units Full Scale) as per EBU  R128 recommendation, the plugin allows you to change this reference so that you can aim for higher or lower levels depending on your needs.

Loudness metering can help you better judge the level of your master or your single tracks as it will be perceived by the ear and so mix quickly and better.

Use auto gain to speed up your workflow

HoRNet LU Meter

HoRNet LU Meter comes equipped with our “auto gain” algorithm, this function lets you adjust automatically the gain of the track so that it’s never louder than the chosen level.

Together with the grouping function this feature allow you to quickly gain-stage all your tracks or groups at once. Simply put LU meter on your tracks and assign them to the same group (you can copy the plugin once you have assigned the group to work even faster) then click on the “gain” butto in the group section and the “auto” button in the gain section. Auto gain will be applied to every instance of LU Meter and your tracks will be automatically adjusted.


We decided to not provide a demo for LU Meter because we don’t want to to cripple our product too much and limiting the capability of this plugin for a demo would mean to provide a bad testing experience.

For this reason we offer an instantaneous full refund within 15 days of your purchase if you buy LU Meter and you don’t like it

Video overview



  • LU Momentary meter spec. conformity
  • LU Peak hold
  • RED Blink clipping indicator
  • Reference level settable from -60 to 0 LUFS
  • Input gain from -30dB to +15dB
  • Bar color freely selectable
  • Stereo automatic gain adjustment with 6 different settings
  • Auto gain with momentary or integrated method
  • Peak protection between (no peak can exceed the set limit)
  • Auto Gain and meter setting can be set to whole group at once
  • Eight different assignable groups
  • Stereo display
  • Standard compliance mode with EBU R128 momentary
  • Mac OS X (>=10.7) and Windows support
  • 64bit compatibility both on Mac and Windows
  • Audio Units, VST, VST3 and AAX format

Copy protection

The HoRNet LU Meter has no copy protection, I don’t believe in copy protection, they are always cracked and they are annoying for the users, we all know you are not going to give away the plugin on the internet…

So simply download the plugin and enjoy your recordings!

8 thoughts on “HoRNet LU Meter

Dan Stanley of 24bit says:

Another great Timesaver from you guys at HorNet. Simple, small footprint and still huge impact on my workflow.

And the price????????? Too low to ignore

Merry Xmas

Angel Ayala says:

Simply amazing! Saves lots of time.

eric lee says:

amazing work you guys, time saver, easy to use and great like the rest of hornet plugins.

John says:

What an amazing plugin. I have much more control of my mix with this plugin and it's a real time saver.

Tacerto says:

This thing, as well as the VU meter, got my money when I nulled it's calculations with my own operation. The truth is I did not trust it, and thats why I did what I just mentioned on my last phrase. It really works accurately, and for this price, I actually feel guilty to purchase it. Life's been getting so easy these days it is not even a joke. Thank you so much Hornet. I really mean it.

Vladimir says:

Thanks guys! You have taken care for little money to greatly simplify my work.
Great little helper!)

Grzegorz Fiedorowicz says:

I like it! Auto Gain works great! +3LU option = Waves WLM calibration.

Martín Genero says:

Thanks for creating this plug-in HorNet! Really smart. A tool that is very handy for us all, and helps us save time. I hope I knew it sooner!
Martín, from Argentina.

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