True Dynamics
True Dynamics
True Dynamics
True Dynamics
True Dynamics
True Dynamics

True Dynamics

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True Dynamics - Vintage Variable Mu Compression in the box

3 rare vintage tube compressors - available in plugin format for the first time!

NAMM TEC Awards Nominee

True Dynamics (nominated for a NAMM TEC Award) emulates the Presto 41AITA LA1B, and now (in version 1.1+) the Collins 26W - three of the most sought after and hard-to-find vintage tube compressors in all of pro audio. These are the rare secret weapons of some of the world's top mixing and recording engineers, and now they can be in your DAW for a tiny fraction of the cost of owning the real units (assuming you can even find those!)

The emulation technology behind True Dynamics incorporates the same industry leading analog-modeled DSP behind Kazrog's renowned True Iron plugin. 

Free Demo Download Available

To download the free demo, select "Free Demo" from the "Version" menu above, then click Add to Cart and proceed to check out (it won't ask for payment information, don't worry!)

Demo limitations: 

  • Random silent output
  • Preset save disabled

Kazrog plugin demos are time-unlimited, but have the above limitations. Purchasing the plugin removes these restrictions. 


  • Highly accurate emulations of the Presto 41AITA LA1B, and Collins 26W compressors, inside a single plugin.
  • Toggle between compressor models with a single click.
  • Unified Gain Reduction, Recovery Time, Mix percent, and Out Level controls.
  • VU meter.
  • Standard Kazrog preset manager with A/B compare.
  • Compensated internal bypass.
  • Advanced panels with power user options such as oversampling control, sidechain LPF/HPF, and Zero Latency mode for realtime tracking.


System Requirements

Mac Windows VST VST3 AU AAX
  • Mac OS X 10.9.5 or higher required
  • VST3, VST2, AU, AAX (64 bit) compatible host required
  • Pro Tools 11 or higher required for AAX version
  • Intel i5 "Ivy Bridge" CPU or better strongly recommended

Apple Silicon status: All current Kazrog plugins are Universal 2 and fully support Apple Silicon / M1 for VST2, VST3, and AU formats, while maintaining full backward compatibility with Intel Macs. 

AAX format is working very well in Pro Tools under Rosetta 2. Full Universal 2 support for AAX format will be offered as soon as Avid allows us to support it.

  • Windows 7 or higher required
  • VST3, VST2, or AAX (64 bit) compatible host required
  • Pro Tools 11 or higher required for AAX version
  • Intel i5 "Ivy Bridge" CPU or better strongly recommended

Customer Reviews

Based on 3 reviews
Gabriel Tompkins
Very useful dynamics tool

Hopefully Kazrog will consider more compressors in the future.

Alex Gamma
Nice color & glue

The three models in True Dynamics are not transparent compressors, they color the sound and put it "in a room". That's the glue, and I love it. The first model has an open sound, the second one is darker and brings out the transients more. The third one is most aggressive. My only complaint is that the A B function doesn't work properly, it sometimes doesn't store the compressor model, only the knob settings. Please, Kazrog, go fix this!

Thanks so much! Yes, the preset A/B functionality in True Dynamics 1.1.0 has known issues at this time. Thankfully it's an easy fix, and is slated for the next free update to the plugin. In any case, sorry about that! :)

R Jason
True Dynamics: Classic dynamic control

The hardware versions of these processors are lusted after by those engineers who want "That sound."
What is so special about these software re-incarnations , is that they are all usable, wonderful in their own way. This means you can get the EXACT flavor you seek rather quickly. A zip through some basic presets will enable one of the units. If it works, great. Close, but not quite the thing, simply instantiate another. The website goes into some detail as to these units, their history, and uses. I've used these on everything, including bass, electric and acoustic guitars, drums...try it...vocals, etc. On piano, it gives you the punch, without the artifacts you'd get from say, an 1176.

I love this software, and highly recommend it to anyone wanted more variety than an LA2A. The vibe they add is classic, big, warm...and not cloudy. As always, Kazrog rocks the price point in the most wonderful way!