BD-Series Monoblock Class D Car Amplifier True RMS Power Rating: 4 ohms: 450 watts x 1 chan. 2 ohms: 750 watts x 1 chan. Wired remote bass level control included Variable Bass Boost (0 to +18 dB bass boost at 50 Hz) Mono channel operation Variable low-pass filter (50-250 Hz, 24 dB/octave) Subsonic filter (24 dB at 15 Hz) Frequency Response: 20-500 Hz Signal to Noise Ratio: 90dB Input Sensitivity: .25-6.0 V High-quality platinum finish connections provide solid electrical connection and resist corrosion Integrated overload, short circuit, thermal and reverse polarity circuit protection 4 gauge power and ground wiring is required for installation Dimensions: 7"W x 9.75"L x 2"H 1-year Warranty from the Original Purchase Date