MasterTool 1.1.1 is available, this update is free for owners of the plugin and includes:

  •  Fixed possible endless loop in update model
  • Fixed crash when re opening old projects in windows
  • Removed shadows to increase GUI compatibility

Download the update logging into your account

Mastering made easy

HoRNet MasterTool is a sound processor designed to apply that final touch to your tracks, you can think of it as a mastering robot.

Thanks to our algorithms and some clever intelligence built in the plugin can adapt to almost every music genre, if you are searching for an easy way to fix your tracks and make them sound good MasterTool it’s here to help you, and if you are a podcaster or work with voiceovers, we have also added some special algorithm tweaks to make you happy.

The plugin takes care of fixing frequency spectrum issues in your mix thanks to our frequency unmasking algorithm, then analyzes the dynamic content and using our coherence meter algorithm as feedback it sets a clipper and two different limiters.
The first clipper and the first limiter cut off the peaks increasing the loudness, the second limiter helps in reaching the final level you specify.

Old Price: 22,99€

Demo limitation

The demo is fully functional except for the fact that every now and then it will silence out, you cannot save parameter values with your session and the plugin will not respond to automation coming from the host.


  • Automatic EQ analisys and correction
  • Three dynamics stages, a clipper and two limiters
  • Smart logic sets the internal parameters analyzing audio characteristics
  • Special voice mode for podcasts
  • Realtime display of correction and gain reduction applied
  • LUFS target level and amount of EQ correction can be set by the user
  • Resizable interface, hardware accelerated
  • Mac OS X (10.11 and later with Metal support) and Windows (7 and later, OpenGL 2 required) support
  • Apple Silicon M1 support
  • 64-bit plugin for Mac and Windows
  • Audio Units VST2.4, VST3 and AAX format

Video Overview

Copy protection

The HoRNet MasterTool has no copy protection, we 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!

17 thoughts on “HoRNet MasterTool

peter castle says:

I trust this brand, i don't even try the demo. I Just buy.

Tim says:

Excellent Plugin, However, A wet/dry mix knob would be well appreciated. Also, the plugin glitches when adjusting the paramenters in real-time. Also, suggest that a video should accompany every new plugin release as I am certain that this will help sales. Also, A LITTLE PRICY FOR HORNET AS THERE ARE SIMILAR PLUGINS THAT CAN ACCOMPLISH THE SAME RESULTS.

Guillaume BOEREMA says:

Its will teach me to always test a demo before buying. I performed 3 tests and the plugin crashed the session. I have no other problem with my machine. I am running windows 10 with an I7 9gen and 32GB of 3200MHz ram and 250 / 1TB SSD. My sound card is a thunderbolt Antelope. Maybe there will be updates that will be corrected. For the moment the plugin has not ruined me but it is unusable.

BeatGeek says:

Just purchased this today and this is the best plugin ever!!! It's better than Izotope and these mastering online services!!! Great job once again!!!

Jens says:

Tried the demo and no matter which DAW I use, the plugin crashes the session. Everything else on my computer works flawlessly. Windows 10, Intel Core i5 8250U, 24GB Ram, 1TB SSD. Hope this will be resolved as I'm very curious about this plugin.

Robert Thornton says:

Not experienced any crashes to date, only issue is the real -time adjustment freeze-up…hoping for a update/fix to resolve…apart from that it's working great!!

laurent roussel says:

I'm a bit disappointed because MasterTool doesn't work at all with Reaper (i own many others hornet plugins which perfectly work and that i like).
On my main PC (i7 win10 64bit 16Go Ram) it freezes Reaper when i want to delete the plugin and when i launch then stop the learn button, i can see that it updates indefinitely but doesn’t do anything, eq, limiter are freezed.
On my second machine (win10 64bit i5 8Go ram) MasterTool isn't recognized at all (vst and vst3).
And no answer to the tickets i open to the support (one of them is opened since 11 months). That's why i'm writing here

Roberto Pedoto says:

Il plugin ha una qualità del suono eccellente testato con alcune tracce house e hip hop/downtempo; sicuramente migliore della qualità degli automated mastering che ci sono a disposizione sul mercato oggi.
Tuttavia ci sono alcuni bug da risolvere come ad esempio il fatto che questo ogni tanto manda in crash la DAW ( nel mio caso Ableton Live 10 ) e che il potenziometro del volume target resta "congelato" dopo avere effettuato il learn e che quindi cambiando volume bisogna effettuare nuovamente il learn.
Inoltre il limiter 1 non entra mai in funzione ed il controllo EQ sembra non dare nessun cambiamento se non sul grafico.
Infine il limiter 2 potrebbe essere un true peak per stare al passo con gli attuali standard
Spero si possa aggiustare tutto questo con i prossimi aggiornamenti…
Merita comunque 5 stelle!

Ralf says:

I like hornet plugins, but unfortunately, MasterTool wasn't the automatic Voiceover-sounds-good-Plugin I was hoping for… The EQ's work did not sound very natural to me, and level wasn't consistent either. Maybe some day there's a MkII!? All the best, and thanks for your good work!

Bruno PERRIN says:

Crash avec studio one 5 !!
Processeur intel core i9 CPU 3.60 GHz.
Ram 64 Go
Window 10.

Vegard Stenslie says:

Wow!! One of the best plugin -purchases…No fuzz, no effort and impressing result.

Sam says:

I like Hornet plugins in general. However, some of them glitch my system (Catalina OS, Macbook Pro 2012, Ableton 11) causing it to freeze like this one, Mastertool. Definitely demo before you buy. Hornet needs to do more cross-platform testing and debugging.

JunoGold says:

I really liked the balancing effect this had on my master bus. That combined with the ease of use make it a no-brainer. But since installing the 1.1 update, any Studio One project I load with this instantiated crashed immediately upon load. (If I remove the VST3 file from the folder it's in, the problem disappears) – Looking forward to being able to use it again at some point.

Alessandro Gomes says:

HoRNet MasterTool 1.1.1 update

With this new UPDATE the tool is working exactly as it should, congratulations for the great work and attention to your users

Pip Eastop says:

This is great BUT…
I'm using it in Luna and it glitches as it's doing its auto EQ thing.
A pity, because it's such a good plugin otherwise…

Simon Giles says:

This is a great plugin and very much worth the money. It’s gets a track up to 10 LUFS comfortably and it sounds clear and plays great in other sound systems. I was skeptical about the continuous eq, but it’s quite subtle and very musical. It gives a lot of clarity and boosts the right places to get the song sounding full. Brilliant engineering.

Phil says:

Very impressed with this plugin. To my ears it gives better results than Ozone – at a fraction of the cost.

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