Christmas cut off: The Christmas delivery cut-off date has passed. Delivery before Christmas is not guaranteed. For the best chance of receiving your order in time, please select Express shipping.
Please be advised that our website will undergo maintenance at 5:00 PM. We expect to be back online by 7:00 PM. During this time, the website may not function at full capacity.
Our last trading day before the holidays is 20th December, and we will reopen on 13th January.
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Christmas cut off: The Christmas delivery cut-off date has passed. Delivery before Christmas is not guaranteed. For the best chance of receiving your order in time, please select Express shipping.

Please be advised that our website will undergo maintenance at 5:00 PM. We expect to be back online by 7:00 PM. During this time, the website may not function at full capacity.

Our last trading day before the holidays is 20th December, and we will reopen on 13th January.

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Rockford Fosgate R400-4D Prime 400W RMS Class-D 4-Channel Amplifier

UPC: 780687333119 SKU: R400-4D
Rockford Fosgate R400-4D Prime 400W RMS Class-D 4-Channel AmplifierRockford Fosgate R400-4D Prime 400W RMS Class-D 4-Channel Amplifier
$399
$399$354
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Full Australian Warranty
  • Express to Metro (1-3 biz days)
  • Standard to Metro (2-6 biz days)
  • Express to Non-metro (2-6 biz days)
  • Standard to Non-metro (5-20 biz days)
  • Pickup (Same or next biz day)
  • Longer ETA applies to NT, WA, NZ & US locations.
  • The above time frames are estimates only. The actual delivery time is dependent on the shipping location, shipper's processing capacity and other unforeseeable factors i.e. natural disasters, accidents etc. We cannot be held responsible for any courier-related delivery delays.
This product is discontinued
  • Out of Stock
  • Model: Rockford Fosgate R400-4D
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Visit us at 3/229 Robinsons Road, Ravenhall, VIC
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Prime 4/3/2 Channel Class-D Car Amplifier


  • RMS Power Rating:
    • 4 ohms: 75 watts x 4 ch
    • 2 ohms: 100 watts x 4 ch
    • Bridged, 4 ohms: 200 watts x 2 ch
  • CEA-2006 compliant
  • LED power (green) and protect (red) indicators
  • Heavy duty aluminum alloy heatsink
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Remote bass level input (remote sold separately)
  • Selectable bass boost on front and rear channels (0, 6, 12 dB at 45 Hz)
  • Variable bass boost on sub channel (0-12 dB at 45 Hz)
  • Signal Input: Low Level: 3 Pair RCA
  • Frequency Response: 20Hz 20kHz
  • Dimensions: 6-11/16"L x 11"W x 2"H

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