With its super efficient Class-bd circuit topology, the PM1000X1bd assures maximum BOOM for your buck! Due to its dedicated low frequency response, this amplifier is optimized for mid-bass speakers or subwoofers only. No need to worry because its 1-ohm capability will drive a pair of 4-ohm DVC subwoofers or quad-configuration of 2-ohm DVC subwoofers with ease. • Marine grade compact amp designed for motorsport and marine applications • 1-ohm capability will drive a pair of 4-ohm DVC subwoofers or quad-configuration of 2-ohm DVC subwoofers with ease • Super efficient Class-bd technology assures maximum BOOM for your buck • Optimized for mid-bass speakers or subwoofers • Auto Turn-On circuit, On-board Punch EQ with +18dB boost @ 45Hz and 12dB/octave Butterworth crossover • Full 2-year warranty