Pulsar Audio Primavera

Spring Reverb Plugin

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    In most cases, the product you purchase from us is a serial number/license code/activation code to register the product with the manufacturer and download directly from them. This ensures you receive the latest version of products, and the best support when necessary.

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    For detailed instructions on the registration/download process, you can visit our dedicated page by clicking here: Install Instructions.

Education Proof

Products with education pricing are for students & teachers only. To prove your education status we require that you upload proof in the form of an image/PDF.

Types of proof


Student ID Card, Letter of enrollment, or similar


Teacher ID Card, Lecturer ID Card, Payslip, Letter from the school/college

Education proof is submitted to the manufacturer and is accepted at their discretion.

The Basics

iLok is a copy protection method used by many of our brands.

It has 3 types of activations, iLok USB, iLok Machine, and iLok Cloud.

Different brands/products will offer different iLok methods. iLok USB is always an option, but the availability of iLok Cloud and iLok Machine methods is at the discretion of the software developer.

iLok Account

For all iLok protected products, you will need an iLok account. You can create one for free here: ilok.com/#!registration

iLok License Manager

To manage your iLok licenses, there is a dedicated app called iLok License Manager. This app is used to register, activate, and move your licenses between locations.

You can download the latest installers from the iLok website: ilok.com/#!home

iLok USB Key

iLok USB

This activation is stored on an iLok 2 or 3 USB key.

It is the best option for portability, if you frequently move between multiple machines, and offline use.

iLok Machine ID

Machine ID

This activation is stored locally on your computer.

While this is a convenient way to work offline, and does not require the additional cost of an iLok USB, there is the risk of a license being lost in the case of a drive failure.

This option also requires extra care when you upgrade to a new computer, the license(s) must be deactivated on your old machine first to ensure you do not lose them.

iLok Cloud

iLok Cloud

This activation is based online, and requires a "cloud session" using the iLok License Manager.

It requires an active internet connection for the entire time you use the plugin(s).

Timeless Organic & Vintage Reverb

Spring reverbs are highly sought-after vintage audio equipment, but their rarity and high cost can make them inaccessible to many.

Known for their unique, warm, characterful and organic tone, these reverbs have forged a sonic identity that spanned from the '50s to the '70s, and is back in vogue today.

Pulsar Primavera is a 6-in-1 reverberation plugin that includes devices heard on countless hits throughout the ages.

From lo-fi to hi-fi, each tank precisely emulates the original units' electronic and mechanical behavior.

Furthermore, exclusive spring tension and excitation controls offer a wider sound palette than typical convolution models.

The software is a complete reverb chain plugin with integrated saturation, filters, presence, and ducking controls.

Get that signature "twang" tone within seconds and experiment with next-gen features packed in a user-friendly interface.

Realistic Spring Reverb Emulation

Most digital spring reverbs sound flat and are poorly configurable because they sample real units rather than modeling them.

With real-time physical modeling, Pulsar Primavera breaks free from these limits and allows manipulation of physical reverberation parameters, like spring tension or excitation, for unique and creative sound design possibilities.

Hit & Shake The Springs

The ringing behavior of the springs can be influenced either by hand or via modulation (and automation), and used as a creative sound design effect.

More than just a fun and interactive way to play with reverb springs, this feature allows the potential for some really interesting effects.

A Complete and Versatile Reverb Chain


The Tension knob changes the reverb's character by adjusting the physical model of spring tension.

Stretch them more or less to get a "softer" or a more "high-pitched" characteristic.


The Excitation knob dynamically triggers the well-known sound of exploding springs, adding a creative touch to your sound design.

It simulates subtle strikes on the springs as the instrument attacks pass through the plugin.


The Ducking control allows you to create dense and prominent reverbs that never conflict with other elements in your song.

This knob reduces the level of reverberation based on the input volume of the plugin (or the sidechain input), clarifying the overall signal when the audio kicks in and preserving space between musical phrases.


Furthermore, we added a Presence tonal control that boosts a specific frequency range carefully chosen to make the reverb stand out in the mix.

Predelay & Decay

The Predelay and Decay knobs offer precise temporal adjustments to the reverb effect.

Predelay enhances clarity with a delay before reverb is applied, and Decay tailors reverberation length for varied musical scenarios.


The Width control allows you to adjust the reverb's stereo image.

Easily blend or sculpt the reverb to your taste with the built-in EQ filters.


Adjust the presence of the tube circuits responsible for a pronounced high-frequency saturated sound with the Drive knob.

You can also switch between two saturation modes if you want to add some grit to the reverb tail - Germanium corresponds to the transistor preamplifier of a well-known reverb used in dub music, and Tube to a warm pentode-type tube amplification.

Diverse Presets, Artist-Designed

Pulsar Primavera comes with hundreds of presets for a solid starting point or quick inspiration.

Apply polish and invention to your sounds with presets meticulously crafted by producers and mixing engineers like Matt Sim, Craig Bauer, and more.

With so much choice at your disposal, we highly encourage some careful digging to find the right sonic treasure within.

System Requirements

  • MacOS 10.9 Mavericks and above
  • Windows 7 and above (64-bit only)
  • Intel, AMD, or Apple Silicon CPU
  • 4GB RAM or more
  • 1GB free storage space
  • 1024x768 screen resolution or higher
  • Free iLok account and iLok License Manager
  • iLok Machine, iLok Cloud, and iLok USB licensing methods are supported
  • Includes 2 activations per license

Plugin Formats

AAX Native, AU, VST2, and VST3

Crossgrade Proof

This crossgrade is for owners of a competing DAW. To prove your DAW ownership, we require that you upload proof in the form of an image/PDF.

Types of proof

A copy of your purchase receipt for the original license or the most recent update/upgrade

A screenshot of your product registration

A photo of your package (either CD/DVD or printed manual), with the unique serial number included in the photo.