Product Name: 4 Inputs and 8 Outputs Digital DSP Audio Sound Processor Model NO.: DP448 THD: 0.005%-0.01% Monitor: No Application: Home Speaker Material: Plastic Speaker System: Optional Combination Operation Mode: Button Control Activity: Passive Hi-Fi: Not Hi-Fi Noise: <102dB Number of Puts: 4 Inputs and 8 Outputs Maximum Input Level: >+30dbu Cmrr: > 45dB Number of Outputs: (8) Line Outputs Max Output Level: +22dbu Dynamic Range: (Line) >113 dB, a-Weighted, >110 dB Unweighted Frequency Response: 20Hz