This Chameleon Labs 7721 Stereo VCA Compressor was engineered to bring power and precision to your tracks. Designed with a robust analog architecture, the 7721 ensures compact, punchy, and professional-grade results for your productions.

Key Features

• Stereo VCA Compressor: VCA-based signal detection for precise audio processing.
• Low-Noise Design: IC-based input and output sections for ultra-low noise performance.
• Sidechain Input: Allows for separate source compression triggering.
• Selectable High Pass Filter: Avoid pumping effects by filtering out low frequencies.
• Peak/RMS Detection Modes: Choose between peak and RMS detection for specific audio needs.
• Soft/Hard Knee Compression: Switch between gentle and aggressive compression styles.
• Blend Control: Mix compressed and uncompressed signals for ultimate flexibility.
• VU Meter: Monitor input, output, and gain reduction levels with precision.

Description

The Chameleon Labs 7721 is a modern stereo VCA compressor designed from the ground up to provide unmatched performance. Its combination of classic and advanced controls allows for precise dynamics processing that caters to modern studio demands.

Whether using the Soft/Hard Knee settings for tailored compression effects or the High Pass Filter for refined sidechain control, the 7721 delivers unmatched flexibility and clarity. Additionally, the blend control enables parallel compression with ease, adding dimension and depth to your mixes.

Specifications

User-Controlled Functions:

• On Switch: Activates the compressor with VU meter illumination.
• Side Chain: Engage sidechain input for external triggering.
• High Pass Filter: Choose between 60, 90, 130, or 200 Hz filtering for sidechain signals.
• Threshold: Adjustable from -15dB to +15dB.
• Attack: Variable attack times (0.1ms to 30ms).
• Release: Variable release times (0.1s to 1.5s).
• Ratio: Selectable compression ratios (1.5:1 to 10:1).
• Blend: Mix dry and compressed signals for parallel compression.
• Output Gain: Adjustable from -60dB to +20dB.
• VU Meter Modes: Monitor Input, Output, or Gain Reduction.

Audio Specifications:

• Noise: <-100dBu with compressor ON.
• Frequency Response: 20Hz – 20kHz ± 0.25dB.
• Headroom: >20dB output level.
• Dynamic Range: 100dB (AES17 Standard).
• Input/Output Impedance: >10kΩ / <50Ω.

Power Supply:

• 100V – 240V (50/60Hz): Fully shielded switch mode power supply.

Mechanical:

• Build: 1RU steel enclosure, aluminum front panel.
• Graphics: Laser-etched.
• Knobs: Milled aluminum for durability and precision.