JL Audio Slash 600/1v3 Mono subwoofer car amplifier 600Watts RMS x 1 Slash 600/1v3 - JL Audio Monoblock 600W RMS Car Subwoofer Amplifier 600 watts RMS x 1 at 1.5 to 4 ohms Variable low-pass filter (40-200 Hz, 12 or 24 dB/octave 4-gauge power and ground leads and a 60-amp fuse recommended  wiring and hardware not included with amplifier 13-7/16"W x 2-7/16"H x 9-5/16"D