Legacy LA789 1000 Watt 2 Channel Bridgeable MOSFET Amplifier 500W x 2 Output @ 2 Ohms - FULL/HPF/LPF X-over Switch - Soft Turn On/Off - Signal to Noise Ratio: &gt;95dB 1000W x 1 Bridged Output @ 4 Ohms - Variable Low-Pass : 40 Hz-250 Hz - Power & Protection LED Indicator - THD:0.1 % 2 Ohm Stable - Variable Input Level (Gain) Control : 6V-200mV - Low Level RCA Input : 10K Ohms - 2x20 Amp Maxi Type Fuse MOSFET Power Supply - Bass Boost Selector : 0/+18dB - Line Level RCA Output - Slim Size Amplifier Design For Easy Installation Variable Hi-Pass : 40 Hz-250 Hz - Thermal / Overload / Short Circuit Protection - Frequency Response : 15 Hz-30K Hz - Dimensions: 10.74''W x 1.69''H x 9''L