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Rockford Fosgate M5-800X4 M5 Series 4 Channel Marine Amplifier

UPC: 780687357962
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SKU M5-800X4

Rockford Fosgate M5-800X4 M5 Series 4 Channel Marine Amplifier

Serious marine sound, made simple. The M5 amplifiers feature the next level of Element Ready™ design from Rockford Fosgate that’s built as rugged as the outdoor environment it’s used in.

Features & Benefits:

Element Ready™: Purpose Built for the Marine Environment, Rockford’s Element Ready™ products are built to stand up to Water, Salt, and UV, making sure your amplifiers stand the test of time.

C.L.E.A.N.: Our Patented circuit with input and output clip indicators help match the source unit to the amplifier, which makes for easy set-up and optimizes musical output.

P.O.W.E.R. Supply: The unique P.O.W.E.R. supply continues to generate more than rated power as the voltage increases, giving you the output, you demand.


Rockford Fosgate amplifiers are known world-wide for producing more power than their ratings suggest. The M5 amplifiers are the first series based on new industry standard Dynamic Power ratings, bringing their conservative ratings to the forefront. Engineered from the ground up and purpose-built to deliver more output where you actually hear it, this is real dynamic power that performs not only on paper, but performance heard through the musical experience. You’ll see two amplifier power ratings, the traditional Continuous Power output, and the new Dynamic Power output, both tested in accordance with the CTA-2006 specification. Consider Continuous Power as wattage developed on the test bench for comparison against other amplifiers in the same class, and Dynamic Power as real-world wattage when connected to a speaker load, listening to music. Either way you look at it, Rockford Fosgate is proving – once again – these amplifiers are powerful enough to drive any speaker or subwoofer you throw at them.


  • Element Ready™ design with integrated harness & panel seals
  • PRESET removes the need to set-up and tune the amp when used with Rockford Fosgate UTV audio kits
  • Constant Power provides instantaneous delivery of output over varying impedance loads
  • Play all day, easy to integrate, and keep music playing for extended lengths of time
  • C.L.E.A.N. input/output clip detection and indicator LEDs
  • Focused mass heat sink allows critical aluminum material to be located around hottest internal devices
  • OEM and aftermarket radio integration inputs
  • Top mounted control panel with Element Ready™ smoked lens cover
  • Quality & Performance tested using proprietary RATS (Rockford Automated Testing System)
  • Low Impedance Stability
  • Proprietary Class-AD technology allows amplifier to produce more power with less current draw
  • Discrete Surface Mount technology with 1% tight-tolerances for high efficiency & reduced cross-talk
  • MESHA 4 reduces MOSFET temps, lowers distortion, increases durability and prolongs device life span
  • Chassis Isolation from mounting points greatly reduces possible introduction of vehicle noise
  • Balanced Differential Inputs eliminates noise picked up by signal cables
  • Remote-Out feature when using high level inputs
  • 2-Year Warranty

    Cta-2006 Compliant
    Number of Channels 4
    Total Power
    (Sum of Rated Power)800 Watts
    Rated Power
    (RMS Continuous Power)CTA-2006 GuidelinesCTA-2006 Continuous Power Rating
    100 Watts x 4 @ 4Ω
    100 Watts x 4 @ 2Ω
    200 Watts x 2 @ 4Ω Bridged/Mono
    ≤1.0% THD+N
    Dynamic Power
    (PVC/PowerCube®)CTA-2006 GuidelinesCTA-2006 Dynamic Power Rating
    125 Watts x 4 @ 4Ω
    200 Watts x 4 @ 2Ω
    400 Watts x 2 @ 4Ω Bridged/Mono
    Bridgeable Yes
    Frequency Response 10 Hz - 50 kHz
    Input Sensitivity 150mVrms - 12Vrms
    Circuit Topology Class Class-AD
    Efficiency (average)>75%
    Total Harmonic Distortion (THD+Noise) <0.25% THD+N @ 1 Watt
    Signal Input Low-Level: 4 RCA
    High-Level: (2) 4-Pin Molex
    Signal Output —
    Tone Controls Front/Rear: 0-14dB @ 12.5kHz
    Front/Rear: 0-18dB @ 45Hz
    Crossover Controls High-Pass:
    50 Hz - 250 Hz @ 12dB/Octave Butterworth

    50 Hz - 250 Hz @ 12dB/Octave Butterworth
    All-Pass: Yes
    Remote Controls No
    Visual Indicators Power: Blue
    Protect: Red
    Input Clip: Red
    Output Clip: Blue/Red
    Power Wire Gauge8 AWG
    Power Input Connector Compression Terminal Block
    Replacement 1040-57997
    Speaker Wire Gauge16 AWG
    Speaker Output Connector4-Pin Molex
    Cooling Convection
    Heatsink Extruded Aluminum
    Operating Voltage9 - 16 VDC
    Recommended Fuse
    (not included)—
    Average Current Draw (13.8V Music)—
    Max. Current Draw (13.8V Sinewave)55 A @ 4Ω
    85 A @ 2Ω
    90 A @ 4Ω Bridged
    Suggested Alternator
    Included in the Box

    (1) Control Cover (1130-75511-01)
    (1) Extension Harnesses (1130-75503-01)
    (1) Pwr/Gnd/Rem Connector (1040-61932-01)
    (1) Front RCA Input Harness (1560-56458-02)
    (1) Rear RCA Input Harness (1560-56727-02)
    (1) Front Spk Out Harnness (1560-56568-01)
    (1) Rear Spk Out Harness (1560-56544-01)
    (1) Allen wrench
    (1) RF sticker
    (1) PRESET warning label
    (1) Performance verification certificate
    Dimensions (H x W x D) 1.7" x 4.25" x 8.41"
    (42.8 mm x 108 mm x 213 mm)
    Does not include harnesses
    Shipping Weight 4.19 Lbs. (1.9 Kg.)