This Monoblock, Class D Amplifier is stable to 1 ohm from 15 Hz to 250 Hz, providing huge power for driving even the largest subwoofers for ground pounding bass. All controls, inputs, and outputs are on 1 side for a simple and clean installation. Also features a built in variable low pass filter, subsonic filter, 12 dB bass boost, and reverse phase switch. Low level RCA inputs and outputs are for connecting multiple amplifiers and includes a wired bass boost controller. Requires external fusing, sold separately. 700W RMS x 1 at 4 Ohms, 1,000W RMS x1 at 2 Ohms, 1,600W RMS x 1 at 1 Ohm. 4,800W Max.