Please wait...
Please wait...
Our website uses cookies so that you can place orders and we can provide a better service. Continue to use the site as normal if you're happy with this, or find out how to manage cookies.
Please wait...
Click to Close

Fit it Yourself?

Everything you need to fit it yourself at home

Only £30.00 

With Steering Wheel Control
Only £50.00 

5 Stars (2)
4 Channel Amplifiers Kenwood Car Audio KAC 8405

Kenwood Car Audio KAC 8405 High Performance 4 Channel AMP 720Watts

Save: £90.04 (45%)  rrp: £199.99
5 Stars
2 Review(s) / write a review
Quickfind Code - 26338
Quick Summary:

Great 4 Channel Amp from Kenwood

Save: £90.04 (45%)
rrp: £199.99
This product has been discontinued

  • COVID-19 We are open online & shipping orders during the COVID-19 pandemic
  • Free Car Air Freshener with every order Free Car Air Freshener with every order
  • Next Day Delivery available on all orders before 5pm Next Day Delivery available on all orders before 5pm
  • Easy Returns Easy Returns
  • 1 Year Easy Warranty 1 Year Easy Warranty

Click image to zoom

Sorry, this product has been discountinued. We recommend the following product.

Kenwood Car Audio KAC-8406 4 Channel 900W Power Amplifier
Kenwood Car Audio KAC-8406

Key Features

High Performance 4 Channel AMP 720Watts - Kenwood Car Audio KAC 8405

Kenwood KAC-8405 Key Features:

  • 4/3/2 Channel power amplifier
  • 720 Watts max Output Power  
  • 2ohms Load Capability
  • Cooling Fan  
  • Built-in variable low-pass filter  
  • Built-in variable high-pass filter  
  • Bass Boost function

Kenwood KAC-8405 Amplifier Features:

  • Load Capability 2ohms Stable
  • Maximum Output Power 720W
  • Rated Power Output 60W x 4 (4ohms)
  • Rated Power Output 90W x 4 (2ohms)
  • Bridged Power Output (4ohms) 180W x 2
  • CEA-2006 Compliant
  • Low-pass Filter 
  • High-pass Fliter 
  • Bass Boost Circuit 
  • Switched Mode Power supply Yes, with Power MOS-FET  
  • Cooling Fan 
  • Power Indicator 
  • Blue Illumination 
  • Signal Sensing Turn-on 
  • Protection function 
  • Line in 2 RCA (Gold Plated)
  • Speaker level Input 
  • Single Side Terminals 
  • Gold Plated Power & Speaker Terminals 
  • Die-Cast Aluminium Heat Sink 
  • Removable Coverplate 

Kenwood KAC-8405 Amplifier-Specifications:

  • Maximum Power Output (4ohms) 180W x 4
  • Rated Power Output (4ohms, 14,4V) 60W x 4 (20Hz ~ 20000Hz, 0.08%THD)
  • Rated Power Output (2ohms, 14,4V) 90W x 4 (1000Hz, 0.8%THD)
  • Bridged Power Output (4ohms, 14,4V) 180W x 2 (1000Hz, 0.8%THD)
  • Rated Power Output (CEA-2006) 60Watts RMS x 4 at 4 ohms and 1% THD
  • Low-pass Filter 50~200Hz (-12dB/oct)
  • High-pass Fliter 50~200Hz (12dB/oct)
  • Bass Boost Circuit 0~18dB (Bch only)  
  • Bass Boost Frequency 40Hz
  • Input Sensitivity 0.2 ~ 5V
  • Input Impedance 10kohms
  • Signal to Noise Ratio 95dB
  • Signal To Noise Ratio (CEA-2006) 80dBa (Reference: 1 Watt into 4 Ohms)
  • Frequency response (+0dB, -3dB) 5Hz ~ 50000Hz
  • Operating voltage 14.4V (11V - 16V allowable)
  • Maximum current consumption 34A
  • Dimensions (WxHxD) 280 x 59 x 238(mm),
  • Weight 2.8kg

Download image of Kenwood Car Audio KAC 8405 Click here for Image of Kenwood Car Audio KAC 8405
Related Accessories
Please wait...
Customer reviews

Neat amp
SIMONSHIPLEY on 21/11/2014 5 star rating

Great amp for the price.Sounds good at any volume would recommend.

small but powerfull
chris (nottingham fitter) on 16/03/2011 5 star rating

i have fitted many of these little four channel amps and they are outstanding for the money. great sound quality and also has signal sensing through the hi level input, so i cars that have hard to find remote turn on feeds or ignition feeds that shut down every few minutes heres the answer.

View all reviews

Write a review
Review Title: 

How many would you give this product?

Newsletter sign up

Questions/Answers About This Product
  • Question: 14 January 2014
    Car: VW Polo - 1998 - 2004

    im interested in KFC-W3103 sub and KFC-M6934A 6x9's, i want to know if this amp is up to the job and how to do it, what sort of results to expect and is there a better kenwood amp that would do it ok


    The amplifier you are are suggestng will work well with that set up

    Deep base from the sub excellent full range from the 6x9s

    Found Useful? Yes 

Fitting Services

Need help with Installation?

Here at CarAudioCentre we offer a professional and reputable fitting service in all our stores. For all fitting enquiries and bookings please visit or call one of our nationwide stores. Our fitters can install your new car stereo, DAB radio, audio visual, speakers, subwoofers or amplifier. We can also help to connect your iPod or MP3 player to you existing audio unit and can offer the best advice on the right in-car entertainment for your vehicle, to further this more we also offer a total 100% custom installation service for demo and show vehicles. So if you have an idea come on in and run it past us, the possibilities are endless and we are never too busy for an enthusiastic chat about our favourite subject.

Please note:

"That our two year warranty on products is only applicable to purchases made directly from us and that have been fitted in one of our stores."

Our Stores:

542 546 Mansfield Road, Sherwood NG5 2FR
Tel: 0115 9624 986
743-745 Eastern Ave, Newbury Park, London, IG2 7RT
Tel: 0208 599 2368
835 Garratt Lane, Tooting, London, SW17 0PG
Tel: 0208 971 9181