HoRNet CompExp

Nice compression and expansion

HoRNet CompExp is a compressor expander based on the design of a compander chip designed for telephone lines and used in many electronic devices to reduce the noise.

The chip works with a fixed threshold (in our case is internally set to -18dBFS) when the “amount” knob is at a value greater than 1 the gain is increased by the specified factor if the signal is below the threshold, and decreased if above. If the chip is set to work as an expander, the contrary happens, the gain is increased if above the threshold and decreased if below.

The system is designed this way to permit dynamic compression on telephone lines and compressor and expander are used together in this configuration, but we found that these models sounds interesting by themselves.

The model of this chip is implemented in the HoRNet HDD1 where is used to keep the noise down in the delay feedback loop.

Internally the gain is compensated so that the output is always kept to around -18dB RMS


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.


  • Compression and expansion
  • Fixed ratio and gain compensation
  • Attack and release times
  • Mac OS X (>=10.7) and Windows support.
  • 64-bit compatibility both on Mac and Windows.
  • Audio Units VST2.4, VST3 and AAX format.
  • Apple Silicon not supported yet

Copy protection

The HoRNet CompExp 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!

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19 thoughts on “HoRNet CompExp

J H says:

10/10 right here. There aren't enough Companders on the market & this one is phenomenal. I would love to see this idea expanded on. I'd purchase a version of this with tweakable Ratio & Gain compensation, as well as a mix knob for parallel compression. This thing is so unique, I think a full fledged Compander based on this would be a great addition to the lineup.

Marius Lau says:

Input trim would be great. Sometimes it acts too hot on default and needs input adjustment to no drive it to hard. Otherwise using it in parallel is usable.

Saverio Vigni says:

Hi, I'm adding the plugin to your account 🙂

paolo54 says:

hi Saverio,

I'm not in twitter and facebook too, would another way to download your free plugins be possible?

I also downloaded some VSTs that I bought and after registering, it would be nice and very simple to be able to use the same credentials to download your free plugins as well.


ciao Saverio,

anchio non sono in twitter e facebook, sarebbe possibile un'altro modo per scaricare i tuoi plugins gratuiti?

Anchio ho scaricato alcuni VST che ho acquistato e dopo essermi registrato, sarebbe bello e molto semplice poter usare le stesse credenziali anche per scaricare i tuoi plugins free.



euy lee says:

This is one of the best plugins! I think.

euy lee says:

I think this is one of the best!

Dave Townsend says:

I have neither Facebook nor Twitter accounts. Please consider a download option that does not require them.

I appreciate that you're after exposure, but believe me, if it's good users will get the word out via online forums. A favorable mention on any of the DAW user forums will reach far more people than a single tweet.

terrence thompson says:


Perry Staltic says:

It's only available for users of the so called "social" networks, I don't use any of those, so I'am out… 🙁

Davide Rizzatti says:

Nice ! Thanks …

Thierry Verger says:

Nice ! thanks …

Spexion says:

Great Plugin 🙂

Jaxon says:


Jacob Bradley says:

Thank You!

Mile Zero Studio says:

Pretty amazing tool to clean up DI´s

antonio says:

fuckin awesome

luca guerra says:

Thanks in advance 4 the freebee!

Luca Guerra says:

Love your plugins, they work fantastic and i totally dig the comprehensable GUI!

Mae Niou says:

CompExp is an all-in-one solution that helps me to handle drums and vocals in no time. It has punch and power to get through any mix .

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