Sansui SA-A900.4 - Power Amp 4Ch Specification : - Power into 4 Ohms : 50W x 4 - Power into 2 Ohms : 65W x 4 - Bridged Power into 4 Ohms : 120W x 2 - Frequency Response : 20Hz-22KHz (-3dB) - Signal Noise Ratio : 90dB - Input Impedance : 22K Ohm - Input Sensitivity : 300mV-6V - T.H.D : lt;0.05% - Bass Boost : 0/+6/+12dB - Dimension : 298*185*44.5*mm