Power Acoustik RZ1-2300D 2300 Watt Monoblock Class D Car Amplifier Power Acoustik RZ1-2300D 2300 Watt Monoblock Class D Car Subwoofer Amplifier  Monoblock RAZOR Series Full Range Class D Car Amplifier  RMS Power Rating:  4 ohms: 900 watts x 1 chan.  2 ohms: 1400 watts x 1 chan.  Max power output: 2300 watts x 1 chan.  Pulse Width Modulated MOSFET power supply  Wired remote bass level control included  LED power (green) and protect (red) indicators  Variable Bass Boost (0 to +12 dB bass boost at 50 Hz)  Soft start turn-on  Mono channel operation  Speaker-level (high-level) inputs  3-way  circuitry (thermal, overload, and speaker short )  Heavy duty aluminum alloy heat-sink for extreme heat dissipation  Nickel-plated RCA level inputs  Nickel-plated screw terminals  Variable subsonic filter (10-50 Hz, 24 dB/octave)  Variable low-pass filter (50-250 Hz, 24 dB/octave)  Dimensions: 4-3/4"W x 11"L x 1-1/3"H