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Rockford Fosgate M5-800X4800 Watt 4-Channel IPX6 Element Ready™ Amplifier

4.06 reviewsSee all reviews

This Rockford Fosgate 800 Watt 4-Channel IPX6 Element Ready™ Amplifier is compact, tunable, and delivers strong performance for multi-speaker setups; several users report notable heat buildup and thermal-related cutouts during extended high-volume use.

Buyer confidence

71%

Highlights

  • 2-Year Warranty
  • Focused mass heat sink allows critical aluminum material to be located around hottest internal devices
  • Discrete Surface Mount technology with 1% tight-tolerances for high efficiency & reduced cross-talk
  • Patented Constant Power™ boosts power up to 25% across varying impedance loads

Key specs

Full specs
Number of Channels
4
Total Power (Sum of Rated Power)
800 Watts
Rated Power (RMS Continuous Power)
CTA-2006 Continuous Power Rating ≤1.0% THD+N 100 Watts x 4 @ 4Ω 100 Watts x 4 @ 2Ω 200 Watts x 2 @ 4Ω Bridged/Mono
Dynamic Power (PVC/PowerCube®)
CTA-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

Key specs

Full specs
Number of Channels
4
Total Power (Sum of Rated Power)
800 Watts
Rated Power (RMS Continuous Power)
CTA-2006 Continuous Power Rating ≤1.0% THD+N 100 Watts x 4 @ 4Ω 100 Watts x 4 @ 2Ω 200 Watts x 2 @ 4Ω Bridged/Mono
Dynamic Power (PVC/PowerCube®)
CTA-2006 Dynamic Power Rating 125 Watts x 4 @ 4Ω 200 Watts x 4 @ 2Ω 400 Watts x 2 @ 4Ω Bridged/Mono

Highlights

Overview
  • 2-Year Warranty
  • Focused mass heat sink allows critical aluminum material to be located around hottest internal devices
  • Discrete Surface Mount technology with 1% tight-tolerances for high efficiency & reduced cross-talk

Review highlights

Based on customer reviews

Rockford Fosgate 800 Watt 4-Channel IPX6 Element Ready™ Amplifier — punchy and compact, but can run hot

This Rockford Fosgate 800 Watt 4-Channel IPX6 Element Ready™ Amplifier is compact, tunable, and delivers strong performance for multi-speaker setups; several users report notable heat buildup and thermal-related cutouts during extended high-volume use.

6 reviews4.0/5 averageUpdated Mar 15, 2026

What buyers praise

  • Compact size with strong power output
  • Handles multi-speaker setups well

What to watch for

  • Unit can run very hot under heavy load or prolonged play
Overview

800 Watt 4-Channel IPX6 Element Ready™ Amplifier from Rockford Fosgate. A compact, marine-ready 4-channel amp engineered for outdoor and on-water audio use with rugged water, salt, and UV resistance.

Best for

  • Powering full-range speakers in marine and outdoor audio systems
  • Boaters and outdoor enthusiasts who need weather-resistant amplification
  • Multi-zone or multi-speaker installations requiring a 4-channel solution

Key points

  • Element Ready™ design resists water, salt, and UV exposure for extended durability in marine environments.
  • IPX6 water intrusion rating for protection against heavy splashing and spray.
  • CTA-2006 compliant: includes both Continuous Power and Dynamic Power ratings.
  • P.O.W.E.R. supply provides increased output as input voltage rises.
  • C.L.E.A.N. patented circuit with input/output clip indicators to help match source unit to amplifier.
  • MEHSA 4 heat sink application, DSM technology, and Class-AD operation; engineered in the USA.

Fit and use

Designed for marine and outdoor audio applications where exposure to water, salt, and sunlight is a concern. Use as a compact 4-channel amplifier to drive full-range speakers or to power multiple zones. Follow manufacturer guidance and the owner's manual for electrical, mounting, and compatibility details.

What to know

This amplifier emphasizes real-world Dynamic Power in addition to traditional Continuous Power ratings. The Element Ready™ construction improves resistance to environmental factors but does not remove the need to follow recommended installation and maintenance practices. Consult the product manual and advisories for f…

Highlights

Key features

  • 2-Year Warranty
  • Focused mass heat sink allows critical aluminum material to be located around hottest internal devices
  • Discrete Surface Mount technology with 1% tight-tolerances for high efficiency & reduced cross-talk
  • Patented Constant Power™ boosts power up to 25% across varying impedance loads
  • Remote-Out feature when using high level inputs
  • C.L.E.A.N. input/output clip detection and indicator LEDs
  • 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
  • Top mounted control panel with Element Ready™ smoked lens cover
  • OEM and aftermarket radio integration inputs
  • MESHA 4 reduces MOSFET temps, lowers distortion, increases durability and prolongs device life span
More info

Manufacturer details

Serious 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.

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.

M5 Amp | Launch Video
M5 Amp | Product Overview

Additional details

DYNAMIC POWER

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.

Technologies
CTA-2006 Compliant

CTA-2006 Compliant

Power ratings on Rockford Fosgate amplifiers conform to CTA-2006 industry standards. These guidelines mean your

IPX6 Water Intrusion Rating

IPX6 Water Intrusion Rating

A device with a level 6 water resistance rating can survive strong water jets projected by a 12.5mm nozzle at any

P.O.W.E.R.

P.O.W.E.R.

Power supply circuit design that allows the amplifier to increase output power as voltage increases.

Element Ready™ | Amps

Element Ready™ | Amps

All components are protected against harsh outdoor elements like Dust, UV, Temperature, Water, Corrosion &

MEHSA 4 (Maximum Efficiency Heat Sink Application)

MEHSA 4 (Maximum Efficiency Heat Sink Application)

MEHSA4 (Maximum Efficiency Heat Sink Application - gen. 4) is a proprietary process that yields a better heat

Engineered In The USA

Engineered In The USA

[av• uh•tahr -noun] 1. an embodiment or personification, as of a principle, attitude, or view of life 2. a

DSM

DSM

DSM - An industry-leading manufacturing process, DSM utilizes high-speed robotics, high-quality 1% tight-tolerance

Class-AD

Class-AD

Rockford Fosgate's AD topology brings out high efficiency bd amplifier design to a full range application. Class

Punch EQ2

Punch EQ2

In the early 70's, Jim Fosgate studied the acoustical properties of automobiles. Utilizing a real-time analyzer

Showing the main technologies for this product.

Specs

Specifications

29
Number of Channels4
Total Power (Sum of Rated Power)800 Watts
Rated Power (RMS Continuous Power)CTA-2006 Continuous Power Rating ≤1.0% THD+N 100 Watts x 4 @ 4Ω 100 Watts x 4 @ 2Ω 200 Watts x 2 @ 4Ω Bridged/Mono
Dynamic Power (PVC/PowerCube®)CTA-2006 Dynamic Power Rating 125 Watts x 4 @ 4Ω 200 Watts x 4 @ 2Ω 400 Watts x 2 @ 4Ω Bridged/Mono
BridgeableYes
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 Low-Pass: 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 Replacement 1040-57997
Speaker Wire Gauge16 AWG
Speaker Output Connector4-Pin Molex
CoolingConvection
HeatsinkExtruded Aluminum
Operating Voltage9 - 16 VDC
Recommended Fuse (not included)80A MAXI Littelfuse #0299080
Average Current Draw (13.8V Music)4Ω Stereo: 29 A 2Ω Stereo: 29 A 4Ω Bridged: 29 A
Max. Current Draw (13.8V Sinewave)4Ω Stereo: 55 A 2Ω Stereo: 85 A 4Ω Bridged: 90 A
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 Weight4.19 Lbs. (1.9 Kg.)
What's in the box
QtyPart numberItem details
1Control Cover (1130-75511-01)
1Extension Harnesses (1130-75503-01)
1Pwr/Gnd/Rem Connector (1040-61932-01)
1Front RCA Input Harness (1560-56458-02)
1Rear RCA Input Harness (1560-56727-02)
1Front Spk Out Harnness (1560-56568-01)
1Rear Spk Out Harness (1560-56544-01)
1Allen wrench
1RF sticker
1PRESET warning label
1Performance verification certificate
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Installation resources

Wiring diagrams

10
Wiring Diagram #1

Wiring Diagram #1

Source: Rockford Fosgate

Wiring Diagram #2

Wiring Diagram #2

Source: Rockford Fosgate

Wiring Diagram #3

Wiring Diagram #3

Source: Rockford Fosgate

Wiring Diagram #4

Wiring Diagram #4

Source: Rockford Fosgate

Wiring Diagram #5

Wiring Diagram #5

Source: Rockford Fosgate

Wiring Diagram #6

Wiring Diagram #6

Source: Rockford Fosgate

Wiring Diagram #7

Wiring Diagram #7

Source: Rockford Fosgate

Wiring Diagram #8

Wiring Diagram #8

Source: Rockford Fosgate

Wiring Diagram #9

Wiring Diagram #9

Source: Rockford Fosgate

Support

Return Authorization

If you bought this product from Onkar Electronics, use the Contact Us page on the Onkar Electronics website and we will help with return authorization and warranty support. If you purchased it from another dealer, contact that authorized dealer first for return assistance.



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