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Boost your music's power

For some people, great music is what makes life worth living. Kicker built their DX600.5 5-channel amp to send 40 watts RMS to your car's front and rear speakers plus up to 300 watts RMS to a sub, so you can feel the musical joy, too. You can also switch the amp into 3-channel mode to run a pair of high-performance components with 150 watts RMS of goodness each, while still driving a sub with 300 watts.

Plenty of control

The built-in high- and low-pass filters adjust the amp's output so your speakers and subs sound their best. The sub channel offers extra control over your bass, with a variable bass boost that lets you add just the right amount of bump and a subsonic filter that keeps inaudible low bass tones away, saving power.

Isolates and eliminates noise

You want lots of power for your speakers, but this Kicker DX amp gives you something extra — clean power. Kicker's FIT™ — Fail-Safe Integration Technology — rejects noise from alternators, audio/video gear, and other car electronics for crisp, clean operation, and accepts a wide range of signals so you can hook up the DX600.5 to almost any stereo.

DX600.5 control panel

Product Highlights:

  • 5-channel car amplifier
  • 40 watts RMS x 4 at 4 ohms + 150 watts RMS x 1 at 4 ohms
  • 75 watts RMS x 4 at 2 ohms + 300 watts RMS x 1 at 2 ohms
  • 150 watts RMS x 2 bridged at 4 ohms + 300 watts RMS x 1 at 2 ohms
  • CEA-2006 compliant
  • variable high-pass filter on front and rear channels (50-200 Hz, 12 dB/octave)
  • variable low-pass filter on subwoofer channel (50-200 Hz, 24 dB/octave)
  • fixed subsonic filter on sub channel (25 Hz, 24 dB/oct)
  • variable bass boost on sub channel (0-12 dB at 40 Hz)
  • Class AB and D amp technologies
  • differential-balanced inputs eliminate noise from your vehicle's electrical system
  • preamp and speaker-level inputs (speaker-level input requires an optional adapter)
  • wired remote sub level control included
  • 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • fuse rating: 30A x 2
  • 18-7/8"W x 2-1/4"H x 8-5/16"D
  • warranty: 2 years (extends to 3 years when purchased with either a Kicker single amp wiring kit or a Kicker multi-amp kit)
  • Our 60-day money-back guarantee

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Kicker 11DX600.5 Reviews

Average Customer Review:

13 Reviews

Great bang for buck

Written by: Matt from Ct, USA on October 8, 2014

Crutchfield Customer Review (What's this?)

Awesome amp would buy again great power output nice clean sound

Pros: Not too heavy, easy to wire, pushbuttons and gain dials are easy to adjust.

Cons: Nothing really just wish it had more power

Nice Amp!

Written by: Bigdaddy from sc on September 11, 2014

Crutchfield Customer Review (What's this?)

Great amp for the price!

Pros: Size and cost


From Good to Bad to Great

Written by: Eddie G from Pembroke Pines, Fl on September 11, 2014

Crutchfield Customer Review (What's this?)

I purchased this Amp it was a open box just to save some money, for the first time i decided to have a proffesionaller install everything from the reciever, speakers, sub and The Amp on my Vw 91 Gti .The installer told me the amp was almost 3 years old ok and then he tested the amp everything fine after everthing was installed the final moment Juice to the system i had a smile it sounded great on the way home it stop working the amp blew, but thanks to Crutchfield they sent me a new one the sameday i called no games .Now i have to say Crutchfield Customer Service is Outstanding that little you may save elsewhere is not worth it now i have a new amp and everything is fine for now.

Pros: Crisp sound

Cons: To early to know

Kicker Amp

Written by: Anonymous from new jersey on August 30, 2014

Crutchfield Customer Review (What's this?)

Very good amplifier. Has many inputs available for multiple speakers. Works great with my 600 watt kicker sub in my 2010 Mazda3. Definitely worth the money for me as I might put it into another car.

Pros: Many inputs. Good amount of power. Bass remote included.


Excellent Amp... BUT

Written by: Eric from Olive Hill KY on August 13, 2014

Crutchfield Customer Review (What's this?)

Excellent amp...sounds great, loud and clean. However, after about 3 months of using it, one day it took a crap on me and quit working. The amp developed an internal short and as soon as I would put a fuse in the power cable, bam, it would blow. Of course, Crutchfield sent me a replacement and I received it in 2 days.. thanks Crutchfield!!! That is why I use them, you cannot beat their support and service!!!

Pros: Excellent, clean and loud.

Cons: Stopped working after 3 months.. probably just a rare incident.

Kicker 11DX600.5

Written by: cwenz from Tucson, AZ on July 19, 2014

Crutchfield Customer Review (What's this?)

Great amp! I am very pleased with my purchase.



Great Amp

Written by: Anonymous from New York on June 7, 2014

Crutchfield Customer Review (What's this?)

This is a great amp. It is perfect for my application. Convenient for all of my door speakers and for my amp!

Pros: Great price and works well for multiple speakers


Kicker Amplifier

Written by: Jeff S from Vallejo Ca on June 1, 2014

Crutchfield Customer Review (What's this?)

Great amp. Clear sound no matter how loud I turn it up. Crutchfield did all the work with their research which made my purchase a no brainier. Will use them again in the future.



Kicker 11DX600.5

Written by: AAArias from Denver, Co on May 18, 2014

Crutchfield Customer Review (What's this?)

Great amp.

Pros: 1 amp 4 component speakers and 2 subs. Enough said

Cons: none

Doesn't get better than Crutchfield!

Written by: Christian C. from Manchester, MA on April 15, 2014

Crutchfield Customer Review (What's this?)

I was in need of a 5 Channel amplifier, I knew I wanted to go with Kicker and new I could find the best equipment at Crutchfield! I was working on a budget and happened to see the amp I was looking for on sale through their Outlet sale (scratch and dent). I can honestly say that I have never liked purchasing something under this category. I like my things new and untouched! I decided to forego any apprehension and buy the amp at the discounted price in hopes of nothing majorly visible.. When I received the package I would never had been able to tell whether the item was classified as "scratch and dent" or not! Because there wasn't any!!! And the item was packaged completely as new! Needless to say, I am extremely happy that I was able to save some money and still meet my standards of visual perfection! This confirms my belief that Crutchfield is the only way to go! Thank you!!

Pros: Clean, un-damaged product. Fair price, quick shipment and fully satisfied!

Cons: Cannot think of one!

Kicker 11DX600.5

Written by: Anonymous from Sumter,SC on April 2, 2014

Crutchfield Customer Review (What's this?)

Great Amp !!! Like the simplicity of the hook-up and set up.

Pros: One amp for entire system !!! Built in crossovers that truly cross-over. Comes with remote sub controller. Not too big, about 2" to 3" tall. Advertised as 600 watts on the site but spec sheet that comes in the box from Kicker says 735 watts !!!!! Kicker gives 2 year warranty !!!! AND the amp came from Crutchfield, whats not to like !!!!

Cons: None so far !!

Kicker amp

Written by: Mike from Cedar Hill, TN on February 20, 2014

Crutchfield Customer Review (What's this?)

Nice product




Written by: Craigo from Salt Lake City, UT on October 26, 2013

Crutchfield Customer Review (What's this?)

Sounds amazing!!



Hands-on research

What's in the box?

Download owner's manual

  • 5-Channel amplifier
  • ZXRC Remote bass level control
  • Metal bracket (for mounting remote bass level control)
  • 18' Remote bass level control cable (RJ-25 plug on both ends)
  • Four 30-Amp ATO blade fuses (2 installed/2 spare)
  • Ten 12-gauge crimp-on barrier spade connectors
  • Four 3/4" Self-tapping screws
  • Two 3/8" Self-tapping screws
  • 3mm Allen wrench
  • Ten 16-22 Gauge butt connectors
  • Owner's manual (English/ Spanish/ German/ French)
  • Power certification sheet

Product Research



Multi-Channel Design: The DX600.5 is a 5-channel amplifier, basically two 2-channel Class AB amplifiers (Amp1/front and Amp2/rear) and a Class D mono subwoofer amplifier built into one chassis. Either of the 2-channel sections can be bridged, so the DX600.5 can be used as a 5-channel, 4-channel, or 3-channel amplifier.

CEA 2006 Compliant: The Kicker DX600.5's power and signal to noise ratio are measured according to CEA 2006 standards (Consumer Electronics Association). These standards allow you to accurately compare the specifications of all CEA 2006-compliant amplifiers, even if they are different brands. Manufacturers who adhere to the standards can display the CEA 2006 logo on their products and packaging.

Power Output:

  • 4-Channel (CEA 2006 Compliant): 40 watts RMS x 4 channel into 4 ohms (20-20,000 Hz, <1% THD+N, 14.4 volt power supply)
  • 4-Channel (2-ohm): 75 watts RMS x 4 channels (20-20,000 Hz, <1% THD+N, 14.4 volt power supply)
  • Bridged (4-ohm): 150 watts RMS x 2 channels (20-20,000 Hz, <1% THD+N, 14.4 volt power supply)
  • Subwoofer Channel (CEA 2006 Compliant): 150 watts RMS x 1 channel (25-200 Hz, <1.5% THD+N, 14.4 volt power supply)
  • Subwoofer Channel (2-ohm): 300 watts RMS x 1 channel (25-200 Hz, <1.5% THD+N, 14.4 volt power supply)

Signal to Noise Ratio: While the CEA 2006 S/N is 85 dB for the full range amps and 80 dB for the subwoofer amp (measured at 1 watt), the S/N at rated power is >95 dB.

Kicker Livin' Loud Certified Power: The amplifier comes with a certificate that indicates the total maximum wattage of the particular amplifier, along with the model number, serial number, tested date, and whether the amplifier passed the total harmonic distortion, signal-to-noise ratio, and protection circuit tests.

Protection Circuitry: The DX600.5 has protection circuitry that will turn the amp off in the event of overheating, over voltage (power input), under voltage (power input), short circuit (speaker output), and over current (speaker output). If the Protection LED on the left side of the amp illuminates red, the protection circuit has engaged and the amp will not play until the problem is resolved.

Fail-Safe Integration Technology (FIT): To accommodate the varying range of signal levels coming from today's factory and aftermarket radios, the DX600.5 utilizes Fail-Safe Integration Technology (FIT), offering isolated differential inputs for significant noise reduction, and compatibility with virtually any factory radio.

Speaker Level Input: High level inputs can be used when the source device doesn't have preamp level outputs. The same RCA inputs on the amp are used for either speaker level or line level connections. When a speaker level signal is used, speaker wire to RCA adapters are needed (item number 20609ZISL, sold separately) and the Input Level should be set to High.

Subsonic Filter: The subwoofer amplifier features a a 24 dB/octave subsonic filter fixed at 25 Hz. Ultra-low frequencies that cannot be reproduced by a subwoofer do not become sound, but unnecessary oscillations which affect sound by causing distortion. These frequencies also waste amplifier power and can cause damage to speakers. The built-in subsonic filter cuts the frequencies below 25 Hz to improve the performance of the speakers by eliminating harmful distortion.

ZXRC Remote Bass Control: The DX600.5 comes with the ZXRC Remote Bass Control, which allows you to control the output level of the subwoofer amplifier from the front of the vehicle. The wired remote comes with a bracket to mount it under the dash. The supplied 18' cable, with RJ-25 phone plugs at each end, connects the wired remote bass level control to the amplifier.

Note: The Remote Bass Control measures approximately 2-1/4" wide x 1-1/4" high x 1.75" deep (2-3/8" deep including the knob and wiring).


Gain Control: The front, rear, and subwoofer sections of the amp have independent input gain controls. With the Input Level Control switch at the appropriate setting, you can set the rotary Gain Control to match the output of the source unit. The Gain Controls are adjusted with a flat-head screwdriver and can be set between 0 and 11.

Input Level: The input level control is switchable; when set to Low, the amp can accommodate a line level input signal of 125mV-5V, on High, the amp will accept a 250mV-10V speaker level signal.

Auto Turn-On: The Auto Turn-On switch offers three options:

  • +12 V: the amp turns on when +12 volts is applied to the remote terminal
  • DC Offset: the amp turns on when a 6 volt surge is detected on the signal inputs (from a speaker level source); in this mode the amp's remote terminal acts as a +12 volt output to turn on another component
  • Audio: the amp turns on when an incoming audio signal is detected; in this mode the amp's remote terminal acts as a +12 volt output to turn on another component

Crossover: The front, rear, and subwoofer channels have independent crossover settings. The front and rear channel crossovers can be set for high-pass or full-range operation. The subwoofer channel's low-pass crossover is always active. The variable crossover points can be independently set between 50 and 200 Hz. The slope is 12 dB per octave for the high-pass crossovers, while the subwoofer's crossover slope is 24dB per octave.

KICKEQ Bass Boost: The subwoofer channel has a bass boost circuit that provides a variable (0-12 dB) signal boost at 40 Hz.

Fader: When you are running two or more sets of inputs to the amplifier, the Fader switch should be placed in On position, to allow your source unit to fade between the front and rear channels. If you want to drive all of the speakers with one set of inputs (Amp1), the Fader switch should be in the Off position.

Sub Input: If you are using a dedicated output on your source unit for the subwoofer, it should be connected to the RCA inputs marked Sub, and the Sub Input switch should be set to Sub. If there is no dedicated subwoofer input, the Sub Input switch should be set to the Amp2 position, and the audio fed to the rear channels will automatically be fed to the subwoofer channel as well.


Left Side of Amplifier:

  • +12V (power): set screw terminal; accepts up to 4-gauge wire; the included 3mm Allen wrench is required to tighten/loosen the terminal
  • REM (remote turn-on): set screw terminal; accepts up to 8-gauge wire; the included 3mm Allen wrench is required to tighten/loosen the terminal
  • GND (ground): set screw terminal; accepts up to 4-gauge wire; the included 3mm Allen wrench is required to tighten/loosen the terminal
  • Speaker Outputs: five pair of screw terminals; accept spade connectors up to 0.325" wide
  • Fuses: two 30-amp ATO fuses (factory installed)

Right Side of Amplifier:

  • RCA Inputs: three pair of RCA input jacks; front, rear, and sub (labeled Amp 1, Amp 2, and Sub)
  • Remote Bass: RJ-25 jack for use with the included ZXRC Remote Bass Control


Extended Warranty: Kicker will add a year to the standard two year warranty (for a total of three years) when any matching Kicker amplifier wiring kit is used with this amp (4 gauge minimum). Both the amp and wiring kit should be purchased on the same order and the usual warranty limitations apply (covers manufacturing defects, must be purchased from an authorized Kicker dealer, etc.).

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Customer Q&A

2 questions already asked

Passive cooling and its a great amp for the money [ DANIEL  Sep 02, 2014 ]
Use a few very small rubber bumpers (like those used on kitchen cabinets) as spacers between the units. [ MICHAEL  Aug 23, 2014 ]
The amp to my knowledge uses passive cooling. There are no cooling fans in this amp. The amp is a bit larger than you would think but still small enough to mount on the back of a sub enclosure. [ Matt  Aug 17, 2014 ]
Yes the sub section of the amp has its own gain control. [ felix  Apr 06, 2014 ]
*the amp is 300 RMS [ Andrew  Jan 24, 2014 ]