5-Channel Class D System Amplifier, 70 W x 4 @ 4 Ω + 500 W x 1 @ 2 Ω - 14.4V Product highlights: Featured in our article: Best multi-channel car amplifiers for 2025 5-channel car amplifier 70 watts RMS x 4 + 225 watts RMS x 1 at 4 ohms 100 watts RMS x 4 + 500 watts RMS at 2 ohms 200 watts RMS x 2 bridged at 4 ohms (4-ohm stable in bridged mode) + 500 watts RMS at 2 ohms Class D amplifier design with NextD™ switching amp technology differential-balanced inputs help eliminate noise variable high-pass filters (50-500 Hz, 12 dB/octave) on front and rear channels variable low-pass filter (50-500 Hz, 12 dB/octave) on subwoofer channel LED clip lights help set gain Other Features: blue LED accent lighting optional wired remote level control for subwoofer channel preamp and speaker-level inputs (speaker wire to RCA adapter required for speaker-level input) 4-gauge power and ground leads and 80-amp fuse recommended — wiring and hardware not included with amplifier no onboard fuses — when installing multiple amps in a system, an additional 80-amp in-line fuse between the distribution block and the amplifier is recommended 14-11/16"W x 2-3/16"H x 7"D warranty: 2 years What's in the box: JL Audio RD900/5 owner's manual 5-Channel amplifier 2.5mm Allen wrench Self-adhesive JL Audio badge Owner's manual