Power Acoustik REP1-3500D Reaper 1 x 2000 Watt RMS at 1 Ohm Class D Digital Mono Subwoofer Amplifier 3500W Max Power : 2000 RMS at 1 Ohm, 1500 RMS at 2 Ohms, 1200 RMS at 4 ohms, 3500W Max 4ga Power/Ground and 8ga Speaker Terminals 12dB 45Hz Bass Boost , Variable 12dB Hi/Low/Subsonic Crossovers Dash Mount Remote Gain Control (class D models) Dimensions 2.5"h x 9"w x 12.75"