HoRNet SAMP - Dolby Atmos master processor

HoRNet SAMP 1.2.2 is available, this update is free for owners of the plugin and includes:

  • Fixed regression for parameter being reset when adding new instances

  • Fixed crackling n compressor in some DAWs

  • Fixed invalid signature crash on Apple Silicon macs

  • Fixed potential bug that made the plugin silent

  • Fixed potential crash when opening interface

  • Performance improvements in compressor module

Spatial Audio Master Processor plugin

HoRNet SAMP is a processor designed by the Italian engineer Antonio Porcelli to work with Dolby Atmos (more info at Dolby official site) mixes and resolves one of “problems” that engineers find when approaching this new format: there is no master bus. This big difference with conventional stereo mixes makes it impossible do to any of the classic adjustment you do on a stereo mix.

Imagine you have 128 different tracks and you want to lift the “highs”, you should go one by one and adjust the EQ, SAMP resolves this issue by providing four classic master bus processors that are linked together, so a change on an instance of SAMP is reflected on every other instance, simultaneously.

Packaged into a single plugin you can find: an equalizer (using the same technology found in our TotalEQ) a compressor (using the same technology of our SyncPressor) a clipper and a limiter (using the same technology of our Magnus MK2). These processors take the audio from each track and apply the same settings to every track, simulating the effect of a master bus processor.

The order of the effect can be rearranged dragging their position on the right part of the plugin interface and their meters and side chain are fed with the sum of the input of every instance of the plugin, mimicking the behavior of a master bus processor.

The overall sound of your Dolby Atmos mixes is under control

In the right part of the interface you can find the list of instances of the plugin available (up to 160 different instances of the plugin are supported) each of the instances has a peak meter built in showing you the level of that track and you can decide if you want to have them all participate to the “virtual” master bus or just some of them by clicking on each one.

Of course SAMP reads the name of track on which it is used (except for the VST version) and hovering with the mouse on any of the 160 level indicators on the left will show you the track name of the indicator.

SAMP is a mono only plugin but it can work on any DAW, even if it doesn’t support Dolby Atmos directly.

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.


  • Equalizer based on TotalEQ with up to 6 different bands
  • Compressor based on SyncPressor
  • Clipper and Limiter based on Magnus MK2
  • Input and output gain slider
  • Attack and release times can be synced to DAW tempo
  • Module order freely selectable
  • Interporcess communication between plugins
  • Up to 160 different plugin instances supported
  • Track name read directly from DAW (except for VST)
  • Input meter display for each instance
  • Compressor and limiter side chain selectable
  • Bypass button for each module and global bypass button
  • Online help
  • Intelligent oversampling up to 4x
  • Resizable vector GUI
  • Hardware accelerated GUI
  • Apple M1 support
  • macOS (10.11 and later) and Windows (7 and later, OpenGL 2.1 required) support.
  • 64-bit only plugins for macOS and Windows.
  • Audio Units, VST, VST3 and AAX format.

Copy protection

The HoRNet SAMP 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!

I’ve been using the HoRNet SAMP plugin for a few months now and I have to say it has quickly become essential to my Atmos mixing, especially when I’m working from stems.  The problem when recreating a mix in Atmos from stems is that first you have to make the stems sound like the mastered stereo mix.  This usually requires a bit of compression, maybe some EQ, definitely some Clipping and Limiting to get the dynamics the same.  I have to recreate not only the cumulative effects of the mix’s master buss on the stems, but also what mastering did to the sound afterwards.  Then I can begin to break out the parts in Atmos and begin panning and sending to Objects.  With HoRNet SAMP on every 7.1.2 master channel and every object channel, the mix master and mastering matching that I’ve done track everywhere instantly along with any changes that I make as the mix progresses.  No more Copy / Paste setting to multiple plugins on multiple channels!
This is now my first essential plugin for Atmos mixing.
John Hanes - Mixstar Studios

The Weeknd, Taylor Swift, Keith Urban, Eddie Vedder, Imagine Dragons, Elton John

These plug-ins are some of the most bang for your buck that you will find. The SAMP plug-in has been an amazing addition to my Atmos template. It makes taming the overall sound and dynamics of the mix extremely easy. The rest of the Hornet tools are highly useful and continually helpful in many situations.
Justin Merrill

Laura Karpman, Jennifer Lopez, Paloma Faith, Earth, Wind & Fire, will.i.am

Leave a Review

Your email address will not be published. Required fields are marked *