Antelope audio A4-1B
The A4-1B is a compressor offered by Antelope Audio.
A Reinterpretation, Not Just an Inspiration
The A4-1B redefines the pro-audio market by combining the authentic warmth of a legendary tube opto compressor with modern digital features. This perfect fusion of tradition and innovation meets the demands of today’s audio professionals.
Key Features:
Authentic Analog Circuitry — True to the topology of a famous Danish design, ensuring pure analog compression.
Custom-made transformers manufactured in the UK — Deliver precise bass response and high-fidelity sound reproduction.
Premium Tubes — Deliver unmatched warmth and audio fidelity.
Premium Capacitors — Ensure consistent clarity and accuracy across the frequency spectrum.
Modern Performance and Reliability
Automatic Tube Test System — Continuous calibration ensures stable performance and optimal stereo matching.
Advanced Power Supply — Modern technology for increased stability, automatic voltage matching and noise reduction thanks to DC tube heating.
Automatically Calibrated VU Meter — Guaranteed accuracy for input, output levels and gain reduction, in hardware and software.
Who is it for?
Mixing and mastering engineers
Advanced producers
FOH (Front of House) engineers
Vintage gear enthusiasts
With the A4-1B, enjoy classic analog sound, an exceptionally pure signal path and intuitive software control, all optimized by motorized potentiometers and automatic calibration systems.
100% Analogue
Custom designed British transformers
High quality tubes
Pre-sorted optical cartridge for precise compression
Push-pull tube amplifier
Continuously variable attack and release times
Audio Features
Ratio: 2:1 to 10:1
Threshold: Off at -40dBu
Attack: 0.5ms to 300ms
Release: 50ms to 10s
Gain: Off at +30dB
Maximum output level: +24dBu
Maximum input level: +24dBu
Noise level: <-80dBu
Input impedance: 10kΩ differential
Output impedance: <60Ω
Frequency response: 20Hz - 20kHz ±1dB
Automation and Digital Features
Remote control via plugin VST3, AAX, AU or standalone application
Exclusive motorized knobs for instant adjustment
Automation of parameters (attack, release, gain, threshold, ratio) via DAW
Comprehensive preset system for quick recall and A/B testing
Extensive side-chain filtering: high-pass, low-pass and band-pass filters
De-esser mode with narrow band-pass filter
Power and Design
Modern power supply with automatic voltage adaptation (95V-245V, 50-60Hz)
DC tube heating for reduced noise and improved warmth
Consistent stereo performance thanks to the calibration system
Operating temperature: 0-50°C (32-122°F)
Measurement and Calibration
VU meter for monitoring input, compression and output
Multiple reference levels for precise measurement
Dimensions and Weight
Dimensions: 88 mm (H) x 483mm (L) x 252mm (D)
Weight: 4.4 kg
Ref. Euroguitar : 115653
