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. FEATURES AT A GLANCE High level input capable with Auto Turn-On circuit Optional remote Punch Level Control (PLC2) ready (w/ input clip indicator) RCA pass-thru outputs Features C.L.E.A.N. Set-up On-board Punch EQ with +18dB boost @ 45Hz Stealth top mounted control panel Over current protection 12dB/octave Butterworth crossover Infrasonic filter Muted turn on Short circuit protection Marine grade stainless steel hardware Cast aluminum heatsink 2-Year Warranty Marine grade two part epoxy coating on circuit boards