The main Scope for subwoofer - Yes Class - D Number of channels - 1 Rated power - 4 Ohm W 420 x 1 Rated power - 2 Ohm W 720 x 1 Rated power - 1 Ohm W 1000 x 1 Frequency range Hz 10 - 300 Harmonic coefficient % 0.2 Signal to noise ratio Db 90 Remote control remote control - There is Filters / DSP Infra Low Pass Filter / Slope Hz / dB / oct 10-50 / 12 / Oct Phase rotator - 0-180 Built-in equalizer, (Bass BOOST) gain (dB) / Hz 0-18 / 45 Commutation Inputs (RCA) - 2 + 1Br Input sensitivity V 0.2-6 Output (RCA) - 1 Nutrition Operating supply voltage V 8.5-16.5 Turn-on delay sec 3 Idle current A 0.6 Fuse A 3x40 Power terminals Ga / mm 2/35 Acoustic terminals Ga / mm2 8 / 8.35 Overload protection - There is Protection indicator Not really Yes Dimensions (edit) Height size mm 55 Width Size mm 211 Size by length mm 330 Total weight G. 2710