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CINCINNATI, OH

4-channel car amplifier — 75 watts RMS x 4

JL Audio RD400/4

4-channel car amplifier — 75 watts RMS x 4

Product highlights:

  • 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

Other Features:
  • blue LED accent lighting

  • preamp inputs and outputs

  • speaker-level inputs (speaker wire to RCA adapter required)

  • 9-13/16"W x 2-1/8"H x 7"D

  • warranty: 2 years

  • MFR # 98621

More 

4

 Channel Amps

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SHOWROOM HOURS

MON-FRI 9AM - 6PM • SAT & SUN CLOSED

11308 Dallas Blvd, Cincinnati, Ohio 45231

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513.742.9380

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