Designed to provide the audio professional with 4 channels of great sounding dbx compression. Smooth classic dbx OverEasy or hard knee compression. PeakStopPlus protects your system from violent peaks that can damage your P.A. or studio monitors.Each channel features threshold, OverEasy or hard knee compression, ratio, input/output meter, output gain, hard-wire bypass, stereo link combining channels 1&2 and 3&4 for 2 channels of true stereo compression, balanced gold-plated XLR and 1/4" inputs and outputs, and switchable +4dBu or -10dBV operating level.