Description AMP3000D 3,000-Watt-Max Monoblock Class D Amp 3,000 watts x 1 channel max power output; 198 watts RMS x 1 channel at 4 ohms; 396 watts RMS x 1 channel at 2 ohms; Designed to power vehicle subwoofer; slim to fit in any trunk; Frequency response: 10 Hz to 180 Hz; Crossover frequency: 40 Hz to 180 Hz; Crossover slope (dB/oct): 12 dB/oct; Signal-to-noise ratio: approximately 96 dB; Voltage supply: 11 volts to 16 volts DC; Gain adjust: 200 mV to 8 volts; Total harmonic distortion: approximately 0.05%; RCA input: 2 channels; Fuse: 40 amps x 3Warranty: 90-dayCountry of Origin: China