Chameleon Labs 7721 Stereo VCA Compressor; stereo VCA compressor; sidechain input; selectable high-pass filter (60, 90, 130 or 200 Hz); switchable detection type: peak or RMS; selectable compression types: soft or hard knee; threshold, attack, release and ratio controls; gridded blend control for parallel compression; VU meter for monitoring input/output level and gain reduction; signal-to-noise ratio: 116 dB; Frequency response: 20 Hz - 20 kHz +/- 0.25 dB; Threshold: -15 dB to +15; Attack time: 0.1 / 0.3 / 1 / 3 / 10 / 30 ms; Release time: 0.1 / 0.3 / 0.6 / 1.2 / 1.5 s; Ratio: 1.5:1 to 10:1; Dimensions (WDH): 480 x 295 x 440 mm; Weight: 5 kg