Antelope A4-1B Perpetual 1-Y SC Native

What A4-1B Is For

A4-1B is a plugin designed for sound engineers and producers who want to gain precision and speed during mixing. It facilitates instant comparisons (A/B), preset organization, and detailed automation setup without breaking the creative flow. Its in-depth sidechain approach allows you to precisely target what triggers the compression, which is especially useful for controlling vocals, stabilizing bass, taming a drum bus, or achieving cleaner, more controlled pumping in modern styles.

Main Features

Integrated preset management and A/B testing

The A4-1B plugin helps you structure your settings with unlimited preset management and quick recall to instantly revert to a configuration. A/B tests allow you to evaluate compression variants in the mix context, without approximation, to choose the version that best serves balance and musical intent.

Custom sidechain for targeted compression

Thanks to an exclusive and fully configurable sidechain filtering, you can fine-tune the compressor's response based on the frequency range that should actually drive the gain reduction. High-pass, low-pass, and band-pass filters help prevent an overly present bass from overcompressing, while the de-essing option enables finer control of sibilance and harshness, especially on vocals and certain acoustic takes.

Responsive automation in any DAW

A4-1B is designed to follow fast and precise automations to sculpt dynamics throughout sections. Whether accentuating a chorus, calming a sudden attack, or making compression more expressive, key parameter automation remains smooth and usable in an intensive production context.

1 Year Synergy Core Native: a ready-to-mix tool palette

In addition to the A4-1B perpetual license, the Synergy Core Native subscription (1 year) provides access to a collection of plugins designed to recapture the warmth and grain of analog gear in a 100% native environment. You get over 70 emulations of essential classics (reverbs, delays, compressors, equalizers, mic preamps), plus new Antelope plugins and regular additions to evolve your toolset as your projects progress.

Technical specifications