Chameleon Labs 7721
Stereo VCA bus compressor
Compressor / Limiter$1,499Manufacturer list price
Specifications
- Type
- Compressor / Limiter
- Description
- Stereo VCA bus compressor
- Topology
- VCA
- Signal path
- Analog
- Channels
- 2
- Channel format
- stereo
- Form factor
- 1U rackmount
- Rack units
- 1
- Frequency response
- 20Hz-20kHz +/-0.25dB
- Impedance (Ω)
- 50k (in/sidechain) / 200 (out)
Details
Controls: Threshold (-15dB to +15dB); Attack (0.1/0.3/1/3/10/30ms); Release (0.1/0.3/0.6/1.2/1.5s); Ratio (1.5:1/2:1/4:1/8:1/10:1); Blend (dry/wet mix); Output gain (-60dB to +20dB); Peak/RMS detection mode; Soft/Hard knee; sidechain high-pass filter (60/90/130/200Hz)
I/O: Input: female XLR (50kΩ); Sidechain input: female XLR (50kΩ); Output: male XLR (200Ω)
Notes: Manufacturer states 7721 was designed 'from a clean sheet of paper' — not marketed as a clone of a specific classic unit, despite VCA stereo-bus-compressor format recalling SSL G-bus-style circuits (inference, not stated). Chameleon Labs previously sold a related '7720' buss compressor (referenced only in a third-party mod-service listing; not present on current chameleonlabs.com site) — 7721 appears to be its current replacement; unconfirmed lineage. Noise <-100dBu (terminated 600Ω); dynamic range 100dB (AES17); headroom >20dB. price_usd is street price at Vintage King (vintageking.com/chameleon-labs-7721-stereo-vca-compressor); chameleonlabs.com does not publish price. Captured 2026-07-20.