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JL Audio RD400/4

Item #45871
100W x 4 RMS @2Ohms, 400W Max Power Class D 4-Channel Full-Range Amplifier

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Product Reviews For JL Audio RD400/4

  • Excellent product, as all JL Audio equipment is. Powering a set of Wet Sounds 8” Wakeboard tower speakers and performance is great, and to JL standards. I recommend this Product. NOTE: I will be buying a set of JL Wakeboard Tower Speakers in the near future.


  • I was in the process of doing an update on my car audio system. I started with the sub amp and thought I needed this amp here to match. This thing powers my Infinity Kappas just right! Nice and crisp, no distortion. Highly impressed compared to my old JX400/1 amp. Highly recommend this amp.

    Brian Soto
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