dbx 160A Professional Audio Compressor/Limiter Dynamic Processor OverEasy or classic hard knee compression with dbx's ultra-musical program dependent attack and release times Compression ratio variable from 1:1 through infinity :1 to negative compression Precision dual RMS LED display monitors input or output and gain reduction over a wide range and calibrates for different operating levels Over 60dB of gain reduction available Exclusive Infinity+ compression allows negative compression Inputs:  TRS, floating balanced XLR, and pin 2 hot XLR Outputs:  TRS, floating balanced XLR, and pin 2 hot XLR