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Rockford Fosgate R600-4D

600W 4-Channel Class D Prime Series Amplifier

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List price $399.99

$249.95

with warranty

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Arrives by Friday, Sept. 5 to zip 20147

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40% Off on 4-Channel RCA Cables w/ purchase!

Save 40% off the NVX XIV45 4-Channel RCA Audio Interconnect cables with your purchase! You will need RCA cables to install your amp!

9.60

34762

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Rockford Fosgate R600-4D

$249.95

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40% OFF

NVX XIV45

$23.99

Special Price $14.39 ($23.99 if purchased separately)

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5m (16.40 ft) 4-Channel Twisted RCA • V-Series • Frost Blue Jacket • Dual Twisted Pair Hyper-Flex Technology For Better Signal Transfer

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Combined Total Price

$264.34

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Prime Certified Power

There is no better feeling than getting exactly what you paid for. This will always be the case with Rockford Fosgate's R600-4D 4-channel amplifier. This CEA-2006 compliant amplifier will give you the rated power output each and every single time, making you feel like your money was well spent. The variable high-pass crossover and variable bass boost will allow for more control of your music to be set at your personal preferences. Rockford Fosgate is well known for making great products and this amplifier is no exception. The heavy duty cast aluminum alloy heatsink will help reduce heat and lower distortion levels or possible thermal overload. This will keep your amplifier running smooth and safely during any listening session. So if you are looking for a reliable, and efficient 4-channel amplifier without breaking the bank, then the R600-4D is the perfect amplifier for you.

General Features

  • Prime Series Full Range Class D 4-Channel Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 100 watts x 4 chan.
    • 2 ohms: 150 watts x 4 chan.
    • Bridged, 4 ohms: 300 watts x 2 chan.
  • MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Variable Bass Boost (0 to +18 dB bass boost at 45 Hz)
  • Soft Start Turn-on
  • 2/4 channel switch
  • 60 Amp In-Line fuse highly recommended
  • Heavy duty cast aluminum alloy heatsink for extreme heat dissipation
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Variable high-pass filter (50-250 Hz, 12 dB/octave)
  • Variable low-pass filter (50-250 Hz, 12 dB/octave)
  • CEA-2006 compliant amplifier
  • Dimensions: 6-11/16"L x 11"W x 2"H
  • 4-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • 1-year SonicElectronix.com warranty

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

100 watts x 4 channels
RMS Power @ 2 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

150 watts x 4 channels
RMS Power @ 1 ohm

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 1 ohm, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

Not Stable
Bridged RMS Power

Bridging refers to combining two channels on an amplifier to create one channel with double the voltage and an increased power output. A 2-channel amplifier will bridge down to 1-channel and a 4-channel amplifier can bridge to create 2-channels. An amplifier is most commonly bridged to drive a subwoofer.

Remember, once you bridge two channels down to one its final impedance will be 4 ohms unless otherwise specified. This rating lists the RMS power created once an amplifier is bridged.

300 watts x 2 channels

Amplifier Specifications

Amplifier Series
This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
Prime (Rockford Fosgate)
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

D
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
4
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

600 watts
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
4 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
4 ohms
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
1.0%
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
No
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
No
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-pass (LP)
High-pass (HP)
High-Pass Crossover Frequency
The high-pass crossover frequency can be a fixed crossover point or a variable crossover range. A variable high-pass crossover allows you to select a specific crossover point which allows frequencies above the set crossover point to pass, while making frequencies below the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

50 - 250 Hz
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

50 - 250 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
90 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 18 dB
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
No
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
No
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
60A X 1 In-Line Fuse Recommended
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

Yes

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
100%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.9
Value
4.8
Features
5.0
Design
5.0
Usability
5.0

Pancho

Nevada

Overall
Durability
Value
Features
Design
Usability

Power house for an entry level amplifier

June 8, 2012

Do not underestimate this amplifier just because it's Rockford Fosgate's entry level Prime series. This little guy packs solid lows and clean highs that will scream through your Mids and Highs. I have this amplifier running full range speaker configurations but I'm sure it would run moderate subwoofers fairly easy. All in all if you're in the market for a solid 4-channel amplifier I would highly recommend this product!

1 of 1 found this helpful

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Zrad

Australia

Overall
Durability
Value
Features
Design
Usability

Great deal

August 12, 2014

Definitely would recommend really good quality and easy to use.

0 of 0 found this helpful

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BuckTussa

Baton Rouge, LA

Overall
Durability
Value
Features
Design
Usability

Clean Class D on Highs - VALUE

July 25, 2014

I have been a Rockford fan all my life. They represent QUALITY and set standards. I am proud owner of power and punch series amps. Now I have prime to cover all the lines. This amp, being a class D for one, on highs, is not the same as AB but I can tell you that you REALLY NEED TO KNOW YOUR SOUND to tell a difference. 99% probably wont. There is a difference when it comes to comparing prime to punch and to power. If you don't own a power series then you won't understand. But when you do it's obvious you have something special. Prime is great, having this r600.4 on RE XXX 6.5 components up front and Infinity Reference in the rear, you get plenty of power and a clean signal. If you are tight on your budget and want VALUE matched with quality then this is a great choice.

0 of 0 found this helpful

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Alanredfish

Richmond,Va

Overall
Durability
Value
Features
Design
Usability

Save Your $$ and Buy this Amp!!

July 22, 2014

On strong recommendation from another seller for a less than $200 amp I bought Zapco 4channel 75/channel amp, and in less than one year started having problems. I bought this amp from Sonic a month ago and I wish I had saved my $$ and gotten the R600 instead. Its a noticable step up in power, particularly running at 2 Ohms/150/channel with my Image Dynamic CTX compontents and ID8 sub. Like the rest of the reviews, I have much bigger, clearer SQ, soundstage separation and especially midrange sound coming from more power.

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nick

Denham Springs, LA

Overall
Durability
Value
Features
Design
Usability

just wow

July 21, 2014

Me and the my brother have been putting in car audio for a little while and I'll tell you something, this amp is the most clean I've ever heard in my life. I've never heard rockford amps before but now I understand the hype. I will buy rockford again and recommend to everyone. And in the picture it looks small but it's pretty thick to be honest. But still compact.

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RANDALL

Riverview, FL

Overall
Durability
Value
Features
Design
Usability

AWESOME

March 14, 2014

LOVE THIS AMP, COMPACT, SOLID, WELL BUILT, VERY EASY TO INSTALL, NO CONS

0 of 0 found this helpful

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Pedro

Radcliff, KY

Overall
Durability
Value
Features
Design
Usability

A year powering my setups, great amp!

August 21, 2013

This amp is a dream! Well worth the price. It's reliable, clean and efficient. For my first setup I used it to power polk db's (2 components in the front and 2 coaxials in the back. Those speakers were monsters. I upgraded a few months later to polk's high end MM series. I only installed two front components for my sound stage and I'll tell you, I push it to the max all the time and still receive VIVID clarity, sound quality, and power from the combo of amp and speakers. This amp is versatile! So if you decide to switch it up like I did, as long as you do your research (and your math) this amp is unbeatable.

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Steve

Northern VA

Overall
Durability
Value
Features
Design
Usability

Best amp I've owned

February 15, 2013

Big brother to my R400, I have the R600 powering 2x8 inch bazooka tubbies, and 2x10 inch bazooka marine tube subs. Incredible depth, clarity, and volume. Factory tested at 820 Watts RMS. I cant imagine how loud this would be in a car - it fills my 39 foot boat with sound.

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Brendan

Canada

Overall
Durability
Value
Features
Design
Usability

AMAZING

April 24, 2012

just an all out amazing amp, have had it for about 2 months and have never had a problem. Puts out great power

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Riley

Booneville, MS

Overall
Durability
Value
Features
Design
Usability

well pleased

October 26, 2011

This amp is effin awesome. Running polk db6501s and a bridged mephis 10 sub. My jeep sounds ridiculous now. Delivers booming bass and still can be tuned for any kind of music. Worth every penny.

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Accessory Tools and Products

Accessories added

NVX XKIT44 4-Gauge 4-Channel Wiring Kit

4-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire

Your Price $99.99

Rockford Fosgate RFK4 4-Gauge Wiring Kit

Get a matching Fosgate wiring kit for your new Fosgate amplifier! Don't forget the RCA's!

Your Price $62.99

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

Your Price $79.99

Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

Get all you need including wire cutters to upgrade your power and ground wire.

Your Price $149.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

Your Price $39.99

Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

Your Price $7.99

Small Universal Remote Level Bass Control

The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.

Your Price $11.99

StreetWires FB4

4 AWG / 4 Gauge Firewall Bushing

Your Price $6.95

NVX XDBU4 - Top of the Line!

Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs

Your Price $17.99

Professional Installation for your Car Power Amplifier

Covers labor charges through our professional installer network.

Your Price $89.99

NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $23.99

StreetWires ZN9 Series Interconnect Cable

16.4 ft. of 4-Channel RCA Cable with Rhodium-plated contacts and ZeroNoise construction for clear signal transfer!

Your Price $99.95

Kicker 4-Channel RCA Audio Interconnect Cable

4 Meters (13 ft.) 4-Channel K-Series RCA Audio Interconnect Cable

Your Price $19.95

NVX XWS1225 12 AWG Speaker Wire

25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $39.99

NVX XWS1250 Speaker Wire

50 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $29.99

NVX XWS1625 16 AWG Speaker Wire

25 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $13.99

Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $14.99

Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $12.99

SMD DD-1 Distortion Detector

Set the gain of an audio amplifier quickly and accurately

Your Price $149.99

Scosche SPL Meter SPL1000F

Handheld boomSTICK measures your SPL range from 60 to 135 dB

Your Price $21.99

AutoSound 2000 CD-102

High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.

Your Price $11.99

Browse 1 question and 1 answer
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Why did you choose this?
Sonic Electronix Store
2 different stores said sonic had good prices and a large selection i found that to be true on both accounts. placing a order was fast and easy
william t on Aug 12, 2014

Product Summary

Manufacturer

Model Number

R600-4D

UPC

780687333126

Weight

6.85lbs

Internal SKU

r6004d

Internal Product ID

34762

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Rockford Fosgate R600-4D

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