Natural! Supernatural!

SIR3 is an easy-to-use native audio-plugin for achieving high-quality reverberation. It offers zero-latency processing with low CPU-consumption and excellent HDIR impulse responses made by Pinguin Ingenieurbüro from Hamburg.

SIR3 Screenshot
SIR3 Screenshot


Supported Plugin Formats:

64-bit Intel Win+Mac
Apple Silicon Native
32-bit Win

Examples Pure HDIR

American Hall
Church Cabinet
Club small
Concert Hall Arena
Concert Hall Square
Recording Studio
Swimming Pool
Spring Reverb Retro

Examples Modulation/Dynamic

Strange 80s Chorus
Dry / Wet
Gated Reverb
Dry / Wet Video
Auto-Pan Tail
Dry / Wet Video
Dry / Wet

33 HDIR Models inclusive

33 HDIR Models inclusive

SIR3 now comes with 33 excellent HDIR models made by Pinguin Ingenieurbüro from Hamburg. The models are known for their high dynamic range and their exact natural fidelity.

The plugin was improved in almost every aspect. The very flexible modulation section allows you transform certain parts (head or tail section) in the time domain. It contains a multi-stage delay with random pitch modulation and random amplitude modulation in the feedback path.

Transform the audio signal with a rich set of dynamic processing opportunities like gating and ducking. Now you can do things like gated reverberation, or ducking the wet signal with the dry signal, directly inside the plugin.

In addition, the possibilities of envelope processing were further expanded. Use a Volume, Low-Pass, High-Pass, Width and Pan-Envelope to modify the impulse in a natural or creative way.

Furthermore, the software works with very low CPU consumption and zero-latency processing.



  • Windows 7 or newer
  • 200 MB hard disk space
  • VST-Host application (like Cubase, Studio One, Ableton Live...), ProTools 11 or newer


  • Mac OS 10.9 or newer
  • 200 MB hard disk space
  • Audio-Unit or VST compatible Host software, ProTools 11 or newer
No Dongle required

Differences between SIR1, SIR2 and SIR3

Platforms Windows Mac (VST/AU) Windows (VST) Mac (VST/VST3/AU/AAX) Windows (VST/VST3/AAX)
64-bit support -
Latency 8960 samples 0 samples 0 samples
Sample-rate Conversion low quality (linear interpolation) high quality high quality
Locater - Start Start, Stop
HDIR-Impulses - 4 HDIR Models 33 HDIR Models
Head/Tail/Full Modulation - -
Amplitude Modulation - -
Random Modulation & Delay - -
Gate - -
Compressor - -
HDIR-Direct Option -
"True Stereo" processing -
Pre-delay 0-300 ms 0-2000 ms 0-2000 ms
Stereo In Control 0% - 100% 0% - 150% 0% - 200%
Stereo IR Control 0% - 100% 0% - 150% 0% - 200% via envelope (stereo-width)
Forward/Reverse Switch
Autogain (improved algorithm)
Damping - - Low/Mid/High
Equalizer low quality high quality (FIR) high quality (IIR, automatable)
Envelopes - Volume, Low-Pass Volume, Low-Pass, High-Pass, Pan, Stereo-Width
Waveform View linear logarithmic linear & logarithmic
Early Reflection Display - -
Waveform Zoom -
Impulse Picture -
Price freeware (no active support) - see purchase info


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