Rockford Fosgate M400-4D 400W RMS Prime Series 4-Channel Full Range Class D Marine Amplifier

Rockford Fosgate M400-4D

400W RMS Prime Series 4-Channel Full Range Class D Marine Amplifier

400W RMS Prime Series 4-Channel Full Range Class D Marine Amplifier

• 4 ohms: 75 watts x 4 chan.
• 2 ohms: 100 watts x 4 chan.
• Bridged, 4 ohms: 200 watts x 2 chan.
• CEA-2006 compliant amplifier
• CE Compliant
• UV resistant and Salt-fog marine protection
• Cast aluminum heatsink
• Tri-stage protection covers thermal, over-current and short circuits
• Marine grade two part epoxy coating on circuit boards
• Marine grade stainless steel hardware
• Preamp RCA outputs to daisy chain multiple amps

We apologize

This item has been discontinued

DESCRIPTION
Rockford Fosgate

Authorized dealer

General Features:


 

 

 
  • 4-Channel Prime Series Full Range Class D Marine Amplifier
  • RMS Power Rating:
    • 4 ohms: 75 watts x 4 chan.
    • 2 ohms: 100 watts x 4 chan.
    • Bridged, 4 ohms: 200 watts x 2 chan.
  • Dynamic Power:
    • 4 ohms: 79 watts x 4 chan.
    • 2 ohms: 138 watts x 4 chan.
    • Bridged, 4 ohms: 255 watts x 2 chan.
  • CEA-2006 compliant amplifier
  • CE Compliant
  • UV resistant and Salt-fog marine protection
  • Pulse Width Modulated MOSFET power supply
  • LED power (blue) and protect (red) indicators
  • Cast aluminum heatsink
  • Tri-stage protection covers thermal, over-current and short circuits
  • Marine grade two part epoxy coating on circuit boards
  • Marine grade stainless steel hardware
  • Preamp RCA outputs to daisy chain multiple amps
  • Soft start turn-on
  • 4/2 Input Switch, sends signal to rear channels w/ only front channel inputs
  • Preamp RCA output to daisy chain multiple amps
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Input sensitivity: 150mV - 4V
  • Frequency Response: 20 - 20,000 Hz
  • Efficiency (average): 80% @ 4-Ohm
  • Total Harmonic Distortion (THD): <1.0%
  • Punch EQ: 0 - +18dB boost @ 45Hz.
  • 12dB/octave Butterworth crossover (selectable)
  • Variable high-pass filter: 50 - 250 Hz, 12 dB/octave
  • Variable low-pass filter: 50 - 250 Hz, 12 dB/octave
  • Recommended Fuse Rating: 40A x 1 inline (not included)
  • Speaker Wire Gauge: 12 AWG - 18 AWG
  • Power Wire Gauge: 4 AWG - 8 AWG
  • 4 gauge OFC power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier.
  • Dimensions: 6-7/10"W x 9-1/10"L x 2"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product history:

Rockford Fosgate M400-4D thumbnail
(newest, current model)
Rockford Fosgate M600-4D thumbnail
(previous model, replaced by Rockford Fosgate M400-4D)

This item is currently not eligible for our low price guarantee. This may be due to supply constraints, manufacturer restrictions, or another reason. We're always here to help you get the best price possible so give us a call or email today. Our experts will do their best to build the system that works for you within the rules.

FEATURES & SPECS
Power Specifications - Full Range Channels
RMS Power @ 4 ohms
75 watts x 4 channels
RMS Power @ 2 ohms
100 watts x 4 channels
Bridged RMS Power
200 watts x 2 channels
Power Specifications - Full Range Channels
Peak Power @ 4 ohms
Peak Power @ 2 ohms
Peak Power @ 1 ohm
Bridged Peak/Max Power
Power Specifications - Subwoofer Channel
Peak Power @ 4 ohm
Peak Power @ 2 ohms
Peak Power @ 1 ohm
Amplifier Specifications
Amplifier Series
Prime (Rockford Fosgate)
Marine Certified
Yes
Amplifier Class
D
Number of Channels
4
Total RMS Power Output
400 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
<1.0%
Speaker Level Inputs
No
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
50 - 250 Hz
Low-Pass Crossover Frequency
50 - 250 Hz
Bass Boost
0 - 18 dB
Bass/Gain Remote
No
Fan Cooled
No
Fuse Rating
40A X 1 In-Line Fuse Recommended
Total Fuse Rating
Strappable
CEA-2006 Compliant
Yes
Sonic Certified Amplifier
Not Tested
Hi-Res Certified
Authorized Dealer
Authorized Dealer
What is in the box?
WITB: Amplifiers
Other Accessory #1
Other Accessory #2
Other Accessory #3
Other Accessory #4
Other Accessory #5
Paperwork
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer
VIDEOS AND HOW - TO
REVIEWS
Rockford Fosgate M400-4D

Rockford Fosgate M400-4D

4.8

(6)

Write a review

Overall rating distribution

5 star
83%
4 star
17%
3 star
0%
2 star
0%
1 star
0%

By feature average rating

Durability
4.5
Value
4.9
Features
4.7
Design
4.7
Usability
4.9

Jacob

March 17, 2014

Compact but Powerful

I bought this amp to put in a bass boat and I was very surprised when I opened the box. It's a very small amp and I had no problem mounting it where I wanted. It runs cool and powers my speakers with ease. My birth sheet said 507 watts.

34

found this helpful.

Ole school

September 19, 2013

Ole school

The ease of use and install, the look and design are awesome, the output is consistent and clear. I matched it with the rest of my Rockford Fosgate stereo. I am happy with it

29

found this helpful.

Randy

September 12, 2013

AWESOME!

This amp is AWESOME! Sounds great! Comes with a certification saying my serial unit was tested to 536 RMS. Would highly recommend.

26

found this helpful.

Gro

May 31, 2013

Good sound, small package

I have this amp pushing a pair of RF 262s and a pair of RF 282s. Much better sound than my previous MB Quart amp (and that one didn't sound bad either). Time will tell how it holds out - only 3 stars on durability because I have only had it for a few week no, but 0 issues.

25

found this helpful.

JayBee

October 31, 2012

Real Good Amp

It's my first marine amplifier. I used it whole summer. Can drive it at max without over heating. The longer period I used it is about three hours at maximum volume and the battery is still good for start the motor. Use it bridge with two eight inches Rockford Fosgate M282.

I Really think it's a quality amp and would buy it again.

22

found this helpful.

Coody Bug

February 2, 2020

Powerful amp.

Great amp. I have installed three of these and only had problems with one. I would recommend this amplifier.

3

found this helpful.
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ITEM DETAILS

Manufacturer:

Model Number:

M400-4D

Weight:

5.50lbs

Internal SKU:

m4004d

Internal Product ID:

43378

Item Added to Cart

400W RMS Prime Series 4-Channel Full Range Class D Marine Amplifier

$329.99

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