Rockford Fosgate 4 Channel Marine & Powersports Amplifier Element Read — Big Jeff Audio Dealer Platform
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  • 800 Watts
  • Frequency Response: 10Hz ~ 50KHz
  • Speaker Wire Gauge: 16 AWG
  • 4 Channels
  • Operating Voltage Range: 9 ~ 16V DC

Rockford Fosgate 800 Watt 4-Channel Marine Element Ready Amplifier M5-800X4

Rockford designed this powerful M5 Series amplifier for marine and powersports environments, using a special "Element Ready" chassis and conformal-coated PC boards to protect against dust and water. This amp also features a UV-stable, powder-coated, cast-aluminum heatsink to help prevent corrosion, while heavy-duty molded connectors protect wiring, keeping out water and dirt. This amp will deliver reliable power through all kinds of abuse, whether it's out on the water or deep in the woods The M5-800X4 amplifier delivers 100 Watts RMS to each of your four speakers, with a Dynamic Power rating of 200 watts per channel at 2 Ohms. Bridge the amp to 2-channel operation, and you can power a pair of subs with 200 watts apiece. You can adjust the high- and low-pass filters to get the best possible sound from your speakers or subs.


- Element Ready design with integrated harness & panel seals

- 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.

- Low Impedance Stability.

- Proprietary Class-AD technology allows amplifier to produce more power with less current draw.

- MESHA 4 reduces MOSFET temps, lowers distortion, increases durability and prolongs device life span.

- Balanced Differential Inputs eliminates noise picked up by signal cables.

This Listing Includes:

(1) Rockford Fosgate M5-800X4 Amplifier

(1) 11" Power/ground/turn-on & speaker output harness (installed on amp)

(1) 11" Input harness (installed on amp)

(2) 14" RCA-to-Molex input adapters

(1) Power/ground/turn-on adapter plug

(2) 7.5" speaker output harnesses

(1) 3mm Allen key

Total Watts (Peak): 800 Watts

RMS Power @ 4 OHM: 100 Watts x 4

RMS Power @ 2 OHM: 100 Watts x 4

RMS Power @ 1 OHM: N/A

RMS Power @ 4 OHM Bridge: 200 Watts x 2

Dynamic Power @ 4 OHM: 125 Watts x 4

Dynamic Power @ 2 OHM: 200 Watts x 4

Dynamic Power @ 1 OHM: N/A

Dynamic Power @ 4 OHM Bridge: 400 Watts x 2


Frequency Response: 10Hz ~ 50KHz

Signal To Noise Ratio: >105dB

Efficiency: >75%

Input Sensitivity: 150mV rms ~ 12V rms

Total Harmonic Distortion (THD+Noise): <0.25% THD+N @ 1 Watt

Low Pass Crossover Freq: 50Hz ~ 250Hz @ 12dB per Octave Butterworth

High Pass Crossover Freq: 50Hz ~ 250Hz @ 12dB per Octave Butterworth

Tone Controls: Front/Rear: 0 ~ 14dB @ 12.5KHz, Front/Rear: 0 ~ 18dB @ 45Hz

Power Connections: 8 AWG

Speaker Wire Gauge: 16 AWG

Heatsink: Extruded Aluminum

Fuse Rating: 100A

Operating Voltage Range: 9 ~ 16V DC


Amplifier Class: AD

Amplifier Type: Marine Amp

Number Of Channels: 4

Minimum Impedance: 2 Ohm

Signal Input: Low Level: 4 RCA / High Level: (2) 4 Pin Molex

Led Indicator: Power/Protect/Input Clip/Output Clip

IP Rating: IPX6 (Water Spray)

Punch EQ: Yes

Signal Sense/DC Offset Turn On: Yes


Overall Length: 8.41 (213mm)

Overall Width: 4.25 (108mm)

Overall Height: 1.7 (42.8mm)

Unit Weight: 4.19 lbs

Payment Information


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Look for a notice of attempted delivery

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If you think that your package has been stolen, we will require a police report since this is now theft.
Once we have a police report on file for the stolen package, we will reship your order.