Industry standard budget dual mono/stereo compressor/limiter, widely used since the mid 80s. Side chain inputs, preset peak limiter. Easy to use, clearly laid out, but the meters are not always terrifically accurate. The first and least cluttered of a family that later added expanders, variable soft/hard knee options and even gates.
||Attack, release, threshold, ratio, gain, + others
||Input impedance: >10k Ohms
Output gain: -20dB to +20dB
Bandwidth: 20Hz - 30kHz ± 1dB
Max output level: +21dBm
Distortion:<0.02% @ +4dB input, U.G.; <0.05% @ +14dB input, 20dB G.R.
Threshold: -24dB to infinity (Ref +4dBv)
Ratio: Variable 1:1 to 20:1
Attack: 50 micro second to 5 seconds
Peak Limiter Threshold: +6dB
Attack: 50 u second