JL Audio RD400/4

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Featured in our article: Best 4-channel car amplifiers for 2025 4-channel car amplifier 75 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms) 200 watts RMS x 2 bridged at 4 ohms (4-ohm stable in bridged mode) Class D amplifier design with NextD™ switching amp technology differential-balanced inputs help eliminate noise variable low- and high-pass filters (50-500 Hz, 12 dB/octave) LED clip lights help set gain blue LED accent lighting preamp inputs and outputs speaker-level inputs (speaker wire to RCA adapter required) 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 9-13/16"W x 2-1/8"H x 7"D Show more