The CL22 is a professional 19" compressor/limiter/gate designed to control the dynamic range of the signal, allowing more overall sound volume before distortion. An enhancer on each channel helps restore high frequencies under heavy compression. Also useful for protecting loudspeakers by curtailing the output once it reaches a preset threshold level. The gate helps to reduce noise in silent passages.Power supply: 115/230Vac, 50/60Hz (IEC)vbCrLfConnectors : bal/unbal: XLR or 6.3mm jack inputs and outputs L+RvbCrLfInput impedance : balanced: 50k OhmsvbCrLfInput impedance : unbalanced: 25k OhmsvbCrLfOutput impedance: 60 OhmsvbCrLfOperating level: +4dBu/-10dBV, switchablevbCrLfFrequency response: 20Hz-20kHz (+0/-0.5dB)vbCrLfSignal to noise ratio: >95dBuvbCrLfCrosstalk: <100dBvbCrLfTHD: 0.04% @ +4dBu 1kHzvbCrLfDimensions: 482 x 44 x 180mmvbCrLfWeight: 3.2kg