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Kenwood KAC-6404

500W Max, 4-Channel Amplifier

4.2

(13 reviews)

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The product on this page is discontinued.
Kenwood Sport Series

When piecing together your perfect audio system, space in your vehicle for audio components can be limited. The Kenwood Sport Series of amplifiers were designed to strike a chord with consumers who appreciate the delicate balance between aggressive cosmetic design and precision audio performance. They also take a smaller footprint than most other amplifiers, making them the perfect addition for any installation that requires exceptional audio reproduction.

This Kenwood KAC-6404 is engineered to output 260 watts of RMS power to four separate channels. This is perfect for powering door speakers that require moderate output levels. Its rated power is CEA-2006 compliant, ensuring all specifications have met the industry standard and are true. The Kenwood Sports Series will make your installation hassle-free looking great!

  • 4-Channel Class AB Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 40 watts x 4 chan.
    • 2 ohms: 60 watts x 4 chan.
    • Bridged, 4 ohms: 130 watts x 2 chan.
  • Max power output: 125 watts x 4 chan.
  • MOSFET power supply
  • LED power indicator
  • 4/3/2 channel operation
  • Speaker-level inputs (adapter included)
  • Short circuit, DC offset, overload, and thermal protection circuitry
  • Aluminum die cast heat sink
  • Gold-plated RCA level inputs
  • Gold-plated screw terminals
  • Fixed high-pass filter (80 Hz, 12 dB/octave)
  • Variable low-pass filter (50-200 Hz, 12 dB/octave)
  • CEA-2006 compliant amplifier
  • Frequency response: 50-200 Hz
  • Dimensions: 13"L x 2.3"H x 9"D
  • 8-gauge power and ground leads recommended. Contact us for information regarding a discount on a select amplifier kit when purchased together.
  • 1-year Sonic Electronix warranty
Product History:
Kenwood KAC-6404 thumbnail
(newest, current model)
Kenwood KAC-6402 thumbnail
(previous model, replaced by Kenwood KAC-6404)
Kenwood KAC-6401 thumbnail
(previous model, replaced by Kenwood KAC-6402)
Power Specifications - Full Range Channels
RMS Power @ 4 ohms40 watts x 4 channels
RMS Power @ 2 ohms60 watts x 4 channels
RMS Power @ 1 ohmNot Stable
Bridged RMS Power130 watts x 2 channels
Peak Power Output125 watts x 4 channels
Amplifier Specifications
Amplifier ClassAB
Number of Channels4
Total Peak Power Output500 watts
Total RMS Power Output260 watts
Maximum Input Gauge Size8 AWG
Minimum Impedance Unbridged2 ohms
Minimum Impedance Bridged4 ohms
THD at Rated RMS Power0.8%
Speaker Level InputsYes
Preamp OutputsNo
Built-in CrossoverLow-pass (LP)
High-pass (HP)
Full (AP)
High-Pass Crossover FrequencyFixed (80 Hz)
Low-Pass Crossover Frequency50 - 200 Hz
Subsonic FilterN/A
Signal-to-Noise Ratio94 dB
Channel SeparationN/A
Bass Boost5 - 50000 dB
Bass/Gain RemoteNo
Fan CooledNo
Fuse Rating25A x 1 
CEA-2006 CompliantYes
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderSonic Electronix
Customer Review Summary for Kenwood KAC-6404
Average Customer Rating is 4.2 out of 5 stars:
4.2
based on 13 Reviews
Share your thoughts with others:
Rating Distribution:
5 star:
.
.
54%
4 star:
.
.
23%
3 star:
.
.
8%
2 star:
.
.
15%
1 star:
.
0%
what's this?
Average Attributes Rating:
Durability
4.5
Value
4.5
Features
4.2
Design
4.2
Usability
4.3
what's this?
Quick Comparison:
Most Helpful Customer Reviews:
July 12, 2011 Kenwood KAC-6404
Review by
Richard from Ferguson, MO
Overall
Durability
Value
Features
Design
Usability
Nice Amp, Kicks in my car, no fan as first advertised, but it really doesn't get too hot
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January 14, 2011 Kenwood KAC-6404: Great Value?
Review by
bigboy from Michigan
Overall
Durability
Value
Features
Design
Usability
I purchased this product to use in my boat to push four 4" marine speakers. I have to say that I was somewhat disappointed after hearing the difference but without a subwoofer I probably can't blame it on this amp. I selected this unit based upon it's low price, size and low current draw. If I had to do it again, I might have gone with an amp that has the capability to add a sub unit. Overall, I'm ok with this product because it does allow me to get more volume without too much distortion but I was hoping for a more noticable improvement.
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December 10, 2010 small amp big punch
Review by
john from ocala, FL
Overall
Durability
Value
Features
Design
Usability
This is a small amp so use it well if your gonna use it for front and back set up get 2 ohm speakers for the back this will get you more punch or I used it for my 4 front speakers which I also used 2 ohm speakers in my doors and 3.5 inch in the dash so it realy sounds great with the 7205 Kenwood in the back with the KAC 6993 PS speakers lots of power I also have hooked up the 9105 amp for my subs with are pushing 2 Pioneer dual coils 2 ohm subs in series and its the best system I have had all for under 1000 dollars
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August 24, 2010 Kenwood KAC-6404
Review by
Rollhard from Kansas City, Kansas
Overall
Durability
Value
Features
Design
Usability
I purchased this product and I am very pleased. Had it installed and it has a great sound. Very well worth it for the price and quality.
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July 6, 2010 Great Amp
Review by
Justin from Milford, NJ
Overall
Durability
Value
Features
Design
Usability
This amp is great, i recent pulled it out of my explorer because i sold it, and wanted to keep my sound equipment. This amp has a lot of good tuning features and is a great contributor to any sound system.
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View All 13 Reviews for Kenwood KAC-6404
Amplifier Wiring Kits
Get the wires you need to properly install and power your car amp.
 ProductPriceAdd?
Monster Cable BAP300Monster Cable BAP300
8 Gauge Amplifier Installation Power Kit (No RCA Interconnects)
$40.00
Kicker DCK8Kicker DCK8
8 Gauge Amplifier Installation Kit with RCA Interconnect Cable
$47.99
Bass Remote Control
Control the volume level of your bass and amplifier from the front of the vehicle.
 ProductPriceAdd?
Universal Remote Level Bass ControlUniversal Remote Level Bass Control
Controls bass level and frequency via RCA/Interconnect connectors on any amp.
$14.99
Small Universal Remote Level Bass ControlSmall Universal Remote Level Bass Control
The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.
$12.99
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.
 ProductPriceAdd?
Kicker XW1220 Speaker WireKicker XW1220 Speaker Wire
12 Gauge Wire - 20 ft. of Dual Twist Speaker Cable with Sleeves for a Clean Install
$24.99
StreetWires SCP1215BL - 12 AWG Speaker WireStreetWires SCP1215BL - 12 AWG Speaker Wire
12 Gauge Wire - 15 ft. of Speaker Cable with Twisted Construction
$19.99
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.
 ProductPriceAdd?
Kicker 4-Channel RCA Audio Interconnect CableKicker 4-Channel RCA Audio Interconnect Cable
4 Meters (13 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted-Pair, Hyper-Flex Technology
$21.99
Kicker Z-Series RCA Interconnect CableKicker Z-Series RCA Interconnect Cable
19 ft. of 4-Channel RCA cable with dual twisted-pair conductors, hyper-flex technology, and gold plated contacts for maximum signal transfer!
$24.99
StreetWires ZN7 RCA Interconnect CableStreetWires ZN7 RCA Interconnect Cable
16.4 ft. of 4-Channel RCA Cable with hyper twist construction, oxygen free copper, and precision machined tips.
$49.99
Capacitors
Capacitors store energy for the amplifier to use on demand, thereby assisting in the elimination of dimming lights during peak power surges during use.
 ProductPriceAdd?
Raptor C1F ** SPECIAL PRICE **Raptor C1F ** SPECIAL PRICE **
True 1.0 Farad Car Audio Capacitor for up to 1000W Max
$31.99
e2 ECAP1 by Scosche - Mid-Level 1 Farade2 ECAP1 by Scosche - Mid-Level 1 Farad
Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max
$43.99
Rockford Fosgate RFC1D - Top of the Line 1 FaradRockford Fosgate RFC1D - Top of the Line 1 Farad
Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max
$104.99
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.
 ProductPriceAdd?
StreetWires FB8StreetWires FB8
8 Gauge Firewall Bushing
$4.99
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
$18.99
Professional Installation for your Car Power AmplifierProfessional 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!
 ProductPriceAdd?
AutoSound 2000 CD-104AutoSound 2000 CD-104
The ultimate amplifier level setting disc used for evaluation of audio components
$12.99
AutoSound 2000 CD-102AutoSound 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-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99

Product Summary

Manufacturer: Kenwood
Model number: KAC-6404
UPC: 019048176110
Weight: 7.00 lbs
Internal SKU: kac6404
Internal product ID: 11792
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Customer Testimonial

Sonic Electronix is the best place i have found to shop for car audio equipment. They have the best pricing and selection as well as fast shipping. they also carry lots of products at unbeatable prices.

- boozeralex from Illinois

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