Rockford Fosgate M5-800X4 4 CH 800 Watts IPX6 Element Ready Amplifier

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800 Watt 4-Channel Element Ready™ Amplifier
The M5-800X4 amplifier features the next level of Element Ready™ design from Rockford Fosgate that’s built as rugged as the outdoor environment it’s used in. The IPX6 rating is provided by splash guards on both ends and heavy-duty molded harnesses with integral sealing gaskets. A new PRESET switch - for use with Rockford Fosgate UTV audio kits - eliminates the need to set-up and tune the amp for the best experience possible. Built on the popular TM series, M5 amplifiers feature the same great technologies like Constant Power, Class-AD and C.L.E.A.N., all engineered, developed, and validated in Tempe, Arizona.


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
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
Constant Power provides instantaneous delivery of output over varying impedance loads
Focused mass heat sink allows critical aluminum material to be located around hottest internal devices
Top mounted control panel with Element Ready™ smoked lens cover
OEM and aftermarket radio integration inputs
Low Impedance Stability
Proprietary testing using RATS (Rockford Automated Testing System)
Proprietary Class-AD technology allows amplifier to produce more power with less current draw
Discrete Surface Mount technology utilizes 1% tight-tolerances for high efficiency and 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

CEA-2006 CompliantYes
Cta-2006 Compliant
Number of Channels4
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
Frequency Response10 Hz - 50 kHz
Input Sensitivity150mVrms - 12Vrms
Circuit Topology ClassClass-AD
Efficiency (average)>75%
Total Harmonic Distortion (THD+Noise)<0.25% THD+N @ 1 Watt
Signal InputLow-Level: 4 RCA
High-Level: (2) 4-Pin Molex
Signal Output—
Tone ControlsFront/Rear: 0-14dB @ 12.5kHz
Front/Rear: 0-18dB @ 45Hz
Crossover ControlsHigh-Pass:
50 Hz - 250 Hz @ 12dB/Octave Butterworth

50 Hz - 250 Hz @ 12dB/Octave Butterworth

All-Pass: Yes
Remote ControlsNo
Visual IndicatorsPower: Blue
Protect: Red
Input Clip: Red
Output Clip: Blue/Red
Power Wire Gauge8 AWG
Power Input ConnectorCompression Terminal Block
Speaker Wire Gauge16 AWG
Speaker Output Connector4-Pin Molex
HeatsinkExtruded 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
Dimensional Diagram
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 WeightTBA

Extra Information

Rockford Fosgate

Warranty Information

2 Years