Blue rackmount audio compressor unit with knobs, toggle switch, meter, and lit buttons on front panel.

ANTELOPE AUDIO A4-1B Analog Automated Opto Valve Compressor - Ultimate

$4,925.00
$4,925.00
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Blue rackmount audio compressor unit with knobs, toggle switch, meter, and lit buttons on front panel.
  • Blue rackmount audio compressor unit with knobs, toggle switch, meter, and lit buttons on front panel.
  • ANTELOPE AUDIO A4-1B Analog Automated Opto Valve Compressor - Ultimate
  • ANTELOPE AUDIO A4-1B Analog Automated Opto Valve Compressor - Ultimate
  • ANTELOPE AUDIO A4-1B Analog Automated Opto Valve Compressor - Ultimate
  • ANTELOPE AUDIO A4-1B Analog Automated Opto Valve Compressor - Ultimate
  • Blue rackmount audio compressor unit with knobs, toggle switch, meter, and lit buttons on front panel.
  • ANTELOPE AUDIO A4-1B Analog Automated Opto Valve Compressor - Ultimate
  • ANTELOPE AUDIO A4-1B Analog Automated Opto Valve Compressor - Ultimate
  • ANTELOPE AUDIO A4-1B Analog Automated Opto Valve Compressor - Ultimate
  • ANTELOPE AUDIO A4-1B Analog Automated Opto Valve Compressor - Ultimate
ANTELOPE AUDIO A4-1B Analog Automated Opto Valve Compressor - Ultimate

ANTELOPE AUDIO A4-1B Analog Automated Opto Valve Compressor - Ultimate

Antelope Audio A4-1B is a rackmount analog opto-valve compressor with Antelope Audio Analog Automation.

$4,925.00
$4,925.00
Condition Brand New
Specs Verified model facts
Checked against 1 listing
Verified
Use Hybrid studios wanting analog opto/tube compression with hardware controls plus DAW recall and automation.
Requires appropriate audio and data cables, compatible monitoring, mounting, or power setup
In stock Ask a question

Specifications

Analog automated opto-valve compressor · 95 V/245 V, 50-60 Hz

Format

Product type Analog automated opto-valve compressor
Signal path 100% purely analog audio circuit
Automation DAW plug-in control with presets, A/B testing and automation via motorized potentiometers
Plugin formats VST3, AAX and AU

Compression

Ratio 2:1 to 10:1 continuously variable
Threshold Off to -40 dBu
Attack 0.5 ms to 300 ms
Release 50 ms to 10 s
Gain Off to +30 dB

Audio and Power

Max input level +24 dBu
Max output level +24 dBu
Noise level < -80 dBu
Frequency response 20 Hz to 20 kHz, ±1 dB
Impedance 10 kohm differential input; <60 ohm output
Power 95 V/245 V, 50-60 Hz

Fit and constraints

Hybrid studios wanting analog opto/tube compres… · 95 V/245 V, 50-60 Hz

Intended use

Use Hybrid studios wanting analog opto/tube compression with hardware controls plus DAW recall and automation.
Not for Users wanting a fully digital plug-in only, a stereo two-channel compressor, or a budget non-recallable hardware compressor.

Constraints

Power95 V/245 V, 50-60 Hz

To use it

Required appropriate audio and data cables, compatible monitoring, mounting, or power setup

Questions

3 to ask before buying

Which connections, drivers, operating systems, and sample rates are supported by this exact revision?

Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.

What cables, mounts, power supplies, or licenses are included?

Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.

Is the current retailer listing new stock, demo stock, open box, or special order?

Ask before you buy via contact. Confirm power, condition grade, and included items against the listing photos.

Description

Product details

The Antelope Audio A4-1B Ultimate is a rackmount analog opto-valve compressor featuring a fully analog signal path with motorized potentiometer control via DAW plugin automation. It offers continuously variable compression ratios from 2:1 to 10:1, adjustable attack (0.5–300 ms) and release (50 ms–10 s) times, and gain up to +30 dB, with plugin formats including VST3, AAX, and AU for real-time parameter recall and adjustment.

Seller notes: ANTELOPE AUDIO A4-1B.

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