JL Audio Slash 300/4v3 4-channel car amplifier | 75 watts RMS x 4 at 1.5 to 4 ohms | 150 watts RMS x 2 at 3 to 8 ohms Regulated, Intelligent Power Supply system | Differential-balanced inputs | Variable high- and low-pass filters (50-5000 Hz, 12 or 24 dB/octave) Absolute Symmetry Class-AB amplifier design | MOSFET power and output stages | Preamp and speaker-level inputs (speaker-level input requires two optional adapter packs) 4-gauge power and ground leads and a 40-amp fuse recommended  wiring and hardware not included with amplifier | No onboard fuses  when installing multiple amps in a system, an additional 40-amp in-line fuse between the distribution block and the amplifier is recommended Dimensions: 13-7/16"W x 2-5/16"H x 10-1/16"D