Pyle-Pro PCA421 19'' Rack Mount Audio Signal Distribution Splitter Four Balanced Stereo Audio Inputs - Frequency Response: 20Hz-20Khz - Unit Dimensions: 19''W x 6.88''D x 1.73''H Eight Un-Balanced XLR Mono Audio Outputs - THD: Less than 0.03% Allows for Input Level Conforming To Input Signal - Output Line Max output: 6dB Reduces Electrical Disturbance - Dynamic Range: 118 dB S/N Ratio: 103dB - Power AC 110/220 V