Belva 1800 watt RMS Monoblock [BB Series] Class AB Car Amplifier with Bass Remote [BB3000D] Wide Frequency Response Range 20-30,000 Hz provides control over the subwoofer and desired frequency Class AB Car Amplifier gives great sound quality to drive your speaker 3-way protection circuitry (thermal, overload, and speaker short protection) RMS power rating: 4 ohms: 780 watts x 1 chan | 2 ohms: 1260 watts x 1 chan | 1 ohm: 1800 watts x 1 chan LED Indicators lights up green for protected operation or red to inform of a potential problem