Antelope Audio Limited-Time Promotional Price (Until December 30th) A4-1B Tube-Optical Compressor (DAW Plug-in with Remote Control) (Antelope Audio)

★The ``A4-1B plug-in control function (perpetual license)'' is bundled with a ``2-year SC Native plug-in membership'' and is included in card format.

■From reproduction to evolution.
The A4-1B Tube-Optical Compressor is the first optical compressor with digital control and automation capabilities, bringing the legendary optotube design and sound to a modern day world.
Crafted using only the highest quality components, it features an innovative, automatic optocell calibration to ensure consistent compression characteristics for decades to come.


The A4-1B Tube-Optical Compressor combines the warmth of classic tube compression with the precision and flexibility of modern technology.
It faithfully reproduces the iconic Nordic sound and uses a fully analog circuit.
Constructed with high-quality components, it delivers precise and transparent compression.
It also offers the authenticity and innovation that professional music producers demand, including remote control and automation from DAW plug-ins, and filtering that enables targeted compression.

All-analog design that recreates the sound of authentic, classic tube and opto-compressors. Custom transformers and high-quality vacuum tubes produce tight low frequencies and high-fidelity audio. Remote control, automation, and preset recall via DAW plug-ins (VST3, AU, AAX). Proprietary motorized potentiometer for instant remote response. User-configurable High-Pass, Band-Pass, and De-essing filters.

■Made up of the most authentic premium analog components, it is more than just a compressor; it achieves the timeless quality of true analog engineering.
A meticulously engineered signal path, high-quality tubes, and custom British-made transformers combine to produce unparalleled musicality, rich low end, and accurately reproduce the compression characteristics of the original.
Pushed to its limits, it breathes new life into vocals, bass, keyboards and percussion without losing clarity.

■Classic sound, cutting-edge technology Combining the warmth of analog with modern engineering, it delivers unparalleled sound quality and performance.
The highly efficient power supply design uses advanced technology to ensure stability and reliability, and is equipped with an automatic voltage regulation function.
Additionally, DC firing of the vacuum tubes minimizes noise and enhances the warmth of the tone.
Digital control technology simplifies compression adjustment for faster and more precise operation.
The automatic opto-cell calibration system ensures perfectly matched compression characteristics in stereo, ensuring performance that will last for decades.

■Analog and Digital come together to provide the A4 DAW plug-in, which supports VST3, AU, and AAX formats and can be remotely controlled, enabling full integration with DAW environments.
The proprietary motorized knobs ensure settings are instantly reflected in the hardware, and presets ensure consistency between sessions and make A/B testing easy.
Attack, Release, Gain, Threshold and Ratio can be automated directly within the DAW plug-in, just like native tools.
The extended filter section also includes Low-Pass, High-Pass and Band-Pass filters, making it ideal for sidechain applications.
Additionally, De-ess mode uses a Narrow Band-Pass Filter to pinpoint and remove unwanted components from vocals and instruments.

Features True analog sound:
100% pure analog circuitry High-quality components for superior sonic performance Custom-designed UK-made transformers and premium vacuum tubes Pre-sorted opto-cells to ensure optimal compression accuracy
Push-pull all-tube amplifier Continuously variable attack/release times Fixed, manual and hybrid timing modes

Automatic calibration system:
Guaranteed compression accuracy over time Advanced power supply for longer tube life and reduced hum Calibration system for consistent stereo link performance VU meters for input, compression, and output monitoring Multiple reference levels for meters

Analog Automation:
Remote control via VST3, AAX and AU plug-ins Proprietary motorized knobs allow settings to be applied instantly to the hardware Comprehensive preset system with options for rapid A/B testing Automation of Attack, Release, Gain, Threshold and Ratio via DAW plug-ins Extensive filtering section with Low-Pass, High-Pass and Band-Pass Filters for sidechaining De-essing mode with Narrow Band-Pass filter

■Included items: A4-1B analog compressor, power cable
・USB-C to USB-C cable
・Quick Start Guide ・A4-1B Plug-in Perpetual License Leaflet


*Please check the manufacturer's website for detailed product specifications.
*Please check the usage environment and operating conditions before purchasing.
*Product specifications, prices, and accessories are subject to change without notice.