CT Sounds AT-1400.1d Amplifier, White 1400W RMS at 1 ohm 700W RMS at 2 ohms 350W RMS at 4 ohms Ratings at 1% THD gain 0.2V to 5V subsonic filter 10Hz to 50Hz phase 0 to 180 bass Boost 0Db to 18Db low Pass and high Pass filters 50Hz to 500Hz rated at 12.8V Bass remote Compatible with aftermarket and factory installed source units