Slate Digital SD-3A

Optical Compressor Module for VMR

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  • $99.00
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    Cloud

     Instant Delivery

    Products with the Instant Delivery badge can be delivered to you in seconds after you place your order.

    Cloud

    Digital Products


    Digital Products are delivered electronically either via your order status page, or via email.

    No physical product will be shipped to you!

    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.

    After purchase, your license code and relevant links will appear on your order status page, or they will be sent to you by email.

    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

Student ID Card, Letter of enrollment, or similar

Teacher/Lecturer

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).
View System Requirements
AAX Native - Compatible with Pro Tools 11 and above
AudioUnits Format VST2 Format VST3 Format
Free iLok account required, USB dongle optional
iLok Dongle Required
MacOS Logo
Windows Logo

Cut Quick, Punch Hard

Inspired by a '60s optical legend, SD-3A delivers fast, musical compression with punchy, mid-forward tone and effortless control. Perfect for vocals, guitars, and drums.

Locks in, Fast

SD-3A gives you instant control with a sound that's tight, focused, and musical.

Its fast, program-dependent response makes it easy to shape dynamics without overthinking settings or breaking your workflow.

Use it on vocals, guitars, drums, or anything that needs punch and precision with minimal fuss.

Makes Tracks Pop Instantly

With fast, musical compression and a mid-forward voice, SD-3A adds punch, energy, and movement without over-processing.

Just the Right Amount of Character

Clean when you want it, colored when you push it.

SD-3A adds shape and attitude without ever sounding overdone, making it perfect for everything from subtle smoothing to aggressive shaping.

System Requirements

  • MacOS 10.15 Catalina and above
  • Officially supported up to MacOS 15 Sequoia
  • Windows 10 and above (64-bit only)
  • Intel, AMD, or Apple Silicon CPU
  • 4GB RAM or more
  • Free iLok account and iLok License Manager
  • iLok Machine 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.

Spectrasonics May 2025 Rebate

Get a rebate of up to $50 when you buy Spectrasonics this month.

Rebate amounts are as follows:

  • Omnisphere 2: $50
  • Keyscape: $40
  • Trilian: $30

Full info can be found here: ilio.com/spectrasonics-rebate