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Kicker ZX650.4 (11ZX650.4)

650W RMS 4-Channel ZX Series Amplifier (ZX6504)

  • 5.0

(8 reviews)

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Specials with this product

  • Free Ground Shipping to the 48 statesdetails

Price Information

$449.95

–$100.00

$349.95

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Why Shop Sonic?

Find the right amplifier for your subwoofers
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Customer Testimonial

Sonic Electronix adds super fast shipping and quality into one masterpiece. The quality products at unbeatable prices are the best on and off the internet. I recommend this to anyone who wants great equipment at unbeatable prices. Even a going out of business sale doesn't come close to these prices!

- SeEsAw from Houston, TX

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Why Choose Kicker Amplifiers:

Kicker Always Exceeds Rated Power

Kicker Performance Audio has been around since 1980 and has been producing amazing products since then. Kicker’s drive to consistently produce products that not only are great but also push the standards of the car audio industry is very apparent in all series of their amplifiers. All Kicker amplifiers are CEA-2006 Compliant, assuring you are receiving a continuous certified RMS power rating. Kicker will always exceed the rated power because Kicker is notorious for under rating their amplifiers. So really you will be getting more power than you actually pay for, which is not true for other lower end performance amplifiers that generally over rate their amplifiers. Kicker amplifiers will provide a choice of three automatic turn-on modes; remote, DC offset, or signal sense, which make them compatible with any car audio system. Along with their high-density convection heat sink for extreme heat dissipation and high efficiency MOSFET power supply, Kickers amplifiers are great way to go when selecting the perfect amplifier for your car audio system.

Kicker FIT Fail Safe Integration Technology

Kicker Fail Safe Technology (FIT):

Kicker has manufactured a new Fail-Safe Integration (FIT) technology into all of their amplifiers. The FIT technology uses isolated differential inputs in order to reject noise or electrical interferences, caused by engines, alternators or any other audio or video component throughout your vehicle. The differential inputs will use a muting circuit that will block out any additional noise that may stream down the line. The FIT technology will help created the cleanest and purest sound possible for any audio system. The Kicker FIT technology is setting the standard for high quality sound.

  • ZX Series 4-Channel Class AB Car Amplifier
  • RMS Power Rating (@ 14.4V):
    • 4 ohms: 120 watts x 4 chan.
    • 2 ohms: 160 watts x 4 chan.
    • Bridged, 4 ohms: 320 watts x 2 chan.
  • MOSFET power supply
  • Wired remote bass level control optional (Kicker 10ZXRC)
  • LED power and protection indicators
  • Tuned Bass EQ (0-18 dB bass boost at 40 Hz)
  • FIT (Fail-Safe Integration Technology) utilizes differential inputs to reject noise and electrical interference for the quietest operation possible and ultimate audio clarity
  • Balanced differential inputs make KICKER ZX Amplifiers compatible with any factory radios
  • Eliminates unwanted noise in a system
  • Boost, gain, and crossover frequencies are top-mounted for easy access, and a handy protection indicator featuring a new flashing yellow low-voltage light enhances the end panel
  • Bridgeable operation
  • Speaker-level inputs compatible (switchable) through RCA connection, Kicker 09ZISL required and sold separately
  • Automatic turn on modes: remote, DC offset, or signal sense
  • Thermal, voltage, and short circuit protection circuitry
  • Variable high-pass filter (50-200 Hz, 12 dB/octave)
  • Variable low-pass filter (50-200 Hz, 12 dB/octave)
  • Frequency response: 20-20000 Hz
  • New front panel allows customization with decals
  • CEA-2006 compliant amplifier
  • Dimensions: 20"L x 9-5/8"W x 2-1/8"H
  • 4-gauge power and ground leads recommended. Contact us for information regarding a discount on a select amplifier kit when purchased together.
  • Authorized Internet Dealer
  • 2-year Manufacturer's warranty

Extend your Kicker warranty to 3 Years when you install your new Kicker amplifier with a compatible Kicker power kit! For a limited time, you can register your Kicker amplifier and power kit to qualify for an additional year of coverage. This offer is only available through official Kicker dealers and will only last for a limited time. With this amplifier, the following power kits will qualify for the extended warranty program: Kicker 09PK4, Kicker 09PKD4, Kicker CK44, Kicker 09ZCK44, and Kicker 09PKD1.

2011 Kicker Authorized Online Dealer and eBay Seller

Product History:

Kicker 11ZX6504 thumbnail
(newest, current model)
Alpine CDA-7998 thumbnail
(previous model, replaced by Kicker ZX650.4 (11ZX650.4))

Sonic Electronix, Inc. can only ship Kicker products within the United States of America.

Power Specifications - Full Range Channels
RMS Power @ 4 ohms 120 watts x 4 channels
RMS Power @ 2 ohms 160 watts x 4 channels
Bridged RMS Power 320 watts x 2 channels
Amplifier Specifications
Amplifier Class AB
Number of Channels 4
Total RMS Power Output 650 watts
Maximum Input Gauge Size 4 AWG
Minimum Impedance Unbridged 2 ohms
Minimum Impedance Bridged 4 ohms
THD at Rated RMS Power <1%
Speaker Level Inputs Yes
Preamp Outputs No
Built-in Crossover Low-pass (LP)
High-pass (HP)
Full (AP)
High-Pass Crossover Frequency 50 - 200 Hz
Low-Pass Crossover Frequency 50 - 200 Hz
Signal-to-Noise Ratio 95 dB
Bass Boost 0 - 18 dB
Bass/Gain Remote Optional (Accessory required and sold separately)
Fan Cooled No
Fuse Rating 80A x 1 
CEA-2006 Compliant Yes
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 2 years
Labor Warranty Duration 2 years
Warranty Provider Manufacturer
Customer Review Summary for Kicker ZX650.4 (11ZX650.4)
Average Customer Rating is 5.0 out of 5 stars:
  • 5.0
based on 8 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
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100%
4 star:
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3 star:
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what's this?
Average Attributes Rating:
Durability
  • 4.9
4.9
Value
  • 5.0
5.0
Features
  • 5.0
5.0
Design
  • 4.9
4.9
Usability
  • 5.0
5.0
what's this?
Most Helpful Customer Reviews:
July 3, 2011 Excellent Product
2 of 2 people found the following review helpful:
Review by
Liclemack from St John's, Antigua And Barbuda
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I just received my 2 amplifiers, these are just the best amps I've ever owned. Pure power, clarity and quality. I'm using 1 to play 2 10inch Selenium mid-range speakers and 4 selenium mid-range horns. The other is being used to play one 12inch mid bass Selenium speaker and two pairs of Kicker KS20 tweeters and 2 Selenium pro tweeters. The music is just amazing. Only Kicker could make these gods of music. :-)
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July 18, 2012 Very Pleased!
Review by
Doolie77 from West Palm Beach, FL
Overall
  • 5.0
Durability
  • 4.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I have had this amp in my 2009 Accord Coupe w/ NAV for 6 months connected to the stock head unit and hooked up to 2 Cerwin-Vega CVMP6.5 on the rear deck for mid bass and to Polk Audio MM6501 up front for bass and treble with a separate amp for my 8" Sub.



There is more power than I can use and the sound is unbelievable! It required some tuning of the crossovers to my speakers, but it was easy to do and makes a great deal of difference.



Be sure to order a quality wiring kit and I also used mass loaded vinyl and adhesive backed sound dampening for the doors and dampening for the flat metal areas to reduce vibrations throughout the vehicle.



I had ordered another amp first but it wasn't compatible with my head unit. After working with their tech support, I was able to replace it with this. Sonic Electronix was great during every aspect!



I'll definitely purchase from Sonic Electronix again!

I only gave a 4 for durability because I have only had it 6 months, but so far so good.
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May 8, 2012 MUST GET
Review by
ABDUL from ROAD TOWN, 0, Virgin Islands (British)
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 4.0
Usability
  • 5.0
I bought this amp because of the name, it's pushing four 5X7 infinity kappa speakers in my 2010 ford explorer sport trac, let me say the clarity it plays at high volume is really sweet, if you are looking for clarity at loud volume this is the amp for you, i almost forgot to mention the amp runs a little hot but this is how it's design over all i love it and recommends it.
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March 19, 2012 Nice Upgrade
Review by
BKRHINO from Bllomingdale, IL
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
This is the amp you want if you want clean power. I had an Eclipse four channel that had a channel go out. The new ZX 650.4 has taken my speakers to a new level. I have Diamond components in the front with MB Quartz in the doors of my 2004 Navigator. I had a custom built double 12 sub box firing down with Diamonds D3's in the rear hatch. Alpine head unit and the system is loud, but VERY CLEAR. The amp is a vital part of your system and you will not be disappointed.
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February 11, 2012 Crystal clear mids/highs!
Review by
Ben from Atlanta, GA
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
I bought this amp to power my four Infinity KAPPA 6x8 coaxial speakers in my 2011 Ford Focus. It sounds awesome and gets super loud! If you want super clear quality and super loud while not distorting, then get this amp! My gains on mine aren't even half way and it sounds so good. The birthsheet for mine said 685W! That's outstanding and says something about it. Don't hesitate and get it if you are thinking about it! Sonic with the hookup on them as well!
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View All 8 Reviews for Kicker ZX650.4 (11ZX650.4)
Amplifier Wiring Kits
Get the wires you need to properly install and power your car amp.
  Product Price Add?
NVX XKIT44 NVX XKIT44
4-Channel 100% OFC Complete True 4 Gauge Amp Kit with RCA Cables and Speaker Wire
$114.99
Stacking Hardware & Strapping Accessories
Use this stacking hardware to mount multiple amplifiers together for a clean, professional installation. Maximize your output with these accessories to strap your amplifiers together.
  Product Price Add?
XIX2025 Strapping RCA XIX2025 Strapping RCA
0.25 Meter (0.86 ft) Hyper-Flex RCA cable w/ Serpentine-Cut Nickel Plated Connectors
$13.99
Bass Remote Control
Control the volume level of your bass and amplifier from the front of the vehicle.
  Product Price Add?
Kicker 10ZXRC Kicker 10ZXRC
Made specifically for the amplifier your viewing.
$19.95
Speaker Wire
Improve the sound quality by delivering more power when replacing your factory wiring. High quality speaker will maximize your amplifier investment and system performance.
  Product Price Add?
NVX XWS1225 Speaker Wire NVX XWS1225 Speaker Wire
25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire
$39.99
NVX XWS1250 Speaker Wire NVX XWS1250 Speaker Wire
50 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire
$29.99
Kicker XW1220 Speaker Wire Kicker XW1220 Speaker Wire
12 Gauge Wire - 20 ft. of Dual Twist Speaker Cable with Sleeves for a Clean Install
$39.95
StreetWires SCP1215BL - 12 AWG Speaker Wire StreetWires SCP1215BL - 12 AWG Speaker Wire
12 Gauge Wire - 15 ft. of Speaker Cable with Twisted Construction
$24.99
RCA Interconnects
You will need a good set of RCA interconnect cables to connect your amplifier to your head unit. Using high quality cables ensure the best sound possible by reducing unwanted noise interference, providing tight contacts, and utilizing the latest in cable technology.
  Product Price Add?
NVX XIV45 4-Channel RCA Audio Interconnect Cable 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
$23.99
NVX XIX45 X-Series RCA Interconnect Cable NVX XIX45 X-Series RCA Interconnect Cable
16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology
$44.99
Installation, Tools & Accessories
With our professional install card, you can have your amp installed by a pro near you, or you can purchase tools and do the install yourself.
  Product Price Add?
StreetWires FB4 StreetWires FB4
4 AWG / 4 Gauge Firewall Bushing
$7.99
Kicker DB1448 (09DB1448) - Top of the Line! Kicker DB1448 (09DB1448) - Top of the Line!
Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs
$29.95
Professional Installation for your Car Power Amplifier Professional Installation for your Car Power Amplifier
Covers labor charges through our professional installer network.
$89.99
Testing and Performance
Optimize your system's performance with testing tools such as SPL meters, bass test discs and more!
  Product Price Add?
Scosche SPL Meter SPL1000F Scosche SPL Meter SPL1000F
Handheld boomSTICK measures your SPL range from 60 to 135 dB
$24.99
AutoSound 2000 CD-104 AutoSound 2000 CD-104
The ultimate amplifier level setting disc used for evaluation of audio components
$12.99
AutoSound 2000 CD-102 AutoSound 2000 CD-102
High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103 AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99
Main Product
  Product Price Add?
Kicker 11ZX6504 Kicker ZX650.4 (11ZX650.4) $349.95

Product Summary

Manufacturer: Kicker
Model number: 11ZX6504
UPC: 713034054818
Weight: 13.50 lbs
Internal SKU: 11zx6504
Internal product ID: 31881