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MTX RFL600D

1200W Max, RFL Series Class D Monoblock Amplifier

Discontinued
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This item has been discontinued

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Authorized MTX Dealer
Stays Cool Under Pressure

Driving an amplifier to its fullest capabilities is common in car audio. Obtaining the most power from your amplifier possible is a necessity sometimes, and it’s always best to find an amplifier that can meet up with our ever-growing demand. MTX Audio’s RFL600D is the perfect amplifier to power any compatible car subwoofer matchups efficiently. With Active Fan Cooling technology the amplifier will have a fan that changes speeds depending on how hard the amplifier is working. The louder your music, the faster the fan spins!

An integrated fan isn’t going to be the only thing to keep an amplifier cool. Active Fan Cooling also integrates air inlets along the top of the amplifier to provide a consistent airflow. Integrated heat-sinks keep all of your important electronics protected and the coolest of all. Combine all of this with MTX’s notorious reputation for rock-solid amplifiers that can meet up with car audio’s demand for durability and you have yourself one reliable amplifier.

  • RFL Series Single-Channel Monoblock Class D Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 350 watts x 1 chan.
    • 2 ohms: 600 watts x 1 chan.
  • Max power output: 1200 watts x 1 chan.
  • MOSFET power supply
  • Electronic Bass Control allows the user to adjust the bass from a remote controller that can be installed near the drivers seat
  • Power and protection LED indicators
  • Tuned Bass EQ (0-12 dB bass boost)
  • 1 channel operation
  • Active Fan Cooling technology has air inlets along the top of the amp and hot air outlets on the sides
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Variable low-pass filter (40-200 Hz, 24 dB/octave)
  • Subsonic Filter (20-50 Hz, 12 Hz)
  • CEA-2006 compliant amplifier
  • Frequency response: 20-200 Hz
  • Dimensions: 14-11/16"L x 8"W x 2-3/8"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.
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Extend your MTX warranty to 2 Years when you install your new MTX amplifier with a compatible STREETWIRES amplifier kit! For a limited time, you can register your MTX amplifier and power kit to qualify for an additional 1 year of coverage. This offer is only available through authorized MTX Dealer in the United States of America or Canada and will only last for a limited time. With this amplifier, the following power kits will qualify for the extended warranty program: StreetWires ZN5K-04, StreetWires ZN3K-04, StreetWires ZN3KI-04

Power Specifications - Subwoofer Channel

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 speaker(s) or subwoofer(s) 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. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
350 watts x 1 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 speaker(s) or subwoofer(s) 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. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
600 watts x 1 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 speaker(s) or subwoofer(s) equals 1 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. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
Not Stable
Peak Power Output
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage. Often times this maximum is achieved during a brief musical burst, such as a drum accent or low bass hit. Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. This is the peak power output for the amplifier's 5th channel.
1200 watts x 1 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.
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.
1 - Mono
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.

1200 watts
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.
Not Bridgeable
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.
0.1%
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)
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.

40 - 200 Hz
Subsonic Filter
Allows you to block (filter) ultra-low frequencies that your subs cannot reproduce.
20 - 50 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.
70 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 - 12 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.
Yes
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).
Yes
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
25A x 3 
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
Strappable
Some amplifiers can be "strapped" together in order to increase the output of a single audio channel. These amplifiers feature RCA preamp outputs, allowing you to pass the signal directly from one amp to the other to ensure consistency.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
33%
4 Star
33%
3 Star
22%
2 Star
0%
1 Star
11%

Average Attribution Rating

Durability
3.2
Value
3.9
Features
4.0
Design
4.0
Usability
4.1

Michael

los angeles, CA

Overall
Durability
Value
Features
Design
Usability

Ehhhh

May 11, 2012

I bought this amp a lil over a year ago and it now goes in and out. Sucks cause it just passed the one year mark. so I would have to say while in the ONE year it worked it kicked pretty well... now im off to find another amp to replace this one...

0 of 0 found this helpful

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Pablo

Winnemucca, NV

Overall
Durability
Value
Features
Design
Usability

Satisfied

March 30, 2012

I bought this amp to push a 12" RE, I had it bridged and have never had any problems with it since the day bought. Does not overheat or anything. Great amp very recomended.

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Eric

White, Non-Hispanic, OH

Overall
Durability
Value
Features
Design
Usability

carp

February 29, 2012

Don't wast your money on this amp mine caught on fire. Never had it turned up, was just driving down the road and I heard somthing pop and then smoke and my subs started to buzz and it blew my subs. Sonic helped me in getting it fixed but I still don't want to hook it up to anything.

0 of 0 found this helpful

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King Kong Audio

Des Moines, IA

Overall
Durability
Value
Features
Design
Usability

Great amp

September 7, 2011

Easy to use amp for a simple customer install. Never overheats and has simple wiring.

0 of 0 found this helpful

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athif

Canada

Overall
Durability
Value
Features
Design
Usability

good product from what i heard, but i got a lemon

July 12, 2011

My friend has this amp with 2 MTX woofers, I liked the quality of his setup since he beats on it real hard and the amp never over heats. I proceeded to purchase the same amp for 2 Kenwood 10 inches, which a helpful Sonix specialist recommended When I had it all hooked up, I noticed a smell coming from the system, but could not pinpoint it, I was told its the woofers glue melting and breaking itself in, which is normal. An hour later after turning the car off I went to turn the car back on and drive off, a cloud of smoke came out of the fan and it shut down, I checked the wiring and it was perfect, I let the amp cool for 4 hours, but now when I turn the amp on it stays in protection mode. The fan also never kicked in when the amp got hot, only after the incident the fan kicks in... It was a nice amp, but I guess I got a lemon :( il have to send it back for an exchange

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chris

Greenville, OH

Overall
Durability
Value
Features
Design
Usability

good

June 17, 2011

The amp worked good and never heated up. It has that power you need at a good price. What I had before never hit as hard as this amp.

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Edward

Greeley, CO

Overall
Durability
Value
Features
Design
Usability

Great Amp!

April 4, 2011

Compared to every other store I have ever bought from getting this amp was perfect fit for me. Pushing 1 10" Type R in sealed box all from Sonic Electronix. 600 RMS matches my Alpine perfect for that heavy punch. Just one is enough for my entire block to hear. The fans on the inside of the amp help cool it very nicely and almost never runs hot.

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Spencer

Rougemont, NC

Overall
Durability
Value
Features
Design
Usability

NICE!

February 13, 2011

I bought this amplifier from Sonic's closeout section as a refurbished model. The birthsheet was sent to me along with the amp and it tapped out at over 1300 watts max. This amp has yet to fail me, the cooling fan works and the amp has ALWAYS done what I have expected it to. High quality

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Compound

Missouri

Overall
Durability
Value
Features
Design
Usability

Decent Amp for that just right bass

August 19, 2011

This amp worked great for my shallow mount kenwood excelon that i had in my single cab S10. went and bought a impala got a kicker L3 hooked it up and the amp fried it right away. went and got a new L3 turned the gain all the way down let it break in for about a day. then i started to turn the gain up very slowly for a couple days. Fan has never worked on it but still puts out that bad ass deep bass. over heats every once in awhile but comes back on in a couple mins. A couple miner adjustments now it beats like hell. MTX makes a damn good amp. just wish the fan would turn on so it will stop over heating.

0 of 2 found this helpful

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Accessory Tools and Products

Accessories added

NVX XKIT42 100% OFC True 4 Gauge Wiring Kit with RCA Cables and Speaker Wire

The reviews speak for themselves, this is awesome wire with everything you need!

Your Price $89.99

StreetWires ZN3KI-04 4 Gauge Wiring Kit

Get a matching StreetWires amp kit with your new MTX amplifier!

Your Price $79.95

Belva BAK42 4 Gauge Amplifier Installation Kit

Great amps need great wire at a great price. This amp kit has everything you need!

Your Price $29.99

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

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 XIV25 V-Series 2-Channel RCA Cable

16.4 ft of V-Series 2-Channel RCA Audio Premium Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $11.99

NVX XIX25 X-Series RCA Interconnect Cable

16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $26.99

NVX XWS1225 12 AWG Speaker Wire

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

Your Price $39.99

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

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

AutoSound 2000 CD-104

Audiophile reference series test disc for evaluation of all audio components.

Your Price $11.99

Items we think you might want

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StreetWires ZN5K-04

• 4 Gauge Power Amplifier Installation Kit
• Designed Specifically for Car Audio Systems up to 1000 Watts
• Made From 100% Oxygen-Free Copper
• Super Flex Jacket
• AFS Fuse Holder
• True-to-Gauge Cables/Wires

Your Price $89.95

ZN3K-04 thumbnail

StreetWires ZN3K-04

• 4 Gauge Power Amplifier Installation Kit
• Designed Specifically for Car Audio Systems up to 1000 Watts
• Made From Aluminum
• Super Flex Jacket
• AFS Fuse Holder
• True-to-Gauge Cables/Wires

Your Price $59.99

Product Summary

Manufacturer

Model Number

RFL600D

UPC

715442241385

Weight

8.50lbs

Internal SKU

rfl600d

Internal Product ID

23741

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: MTX RFL600D