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Kenwood KACM1804 Compact In Line 4-Channel Digital Amplifier (400W)

Save: £113.56 (57%)  rrp: £199.98
5 Stars 5
Quickfind Code - 32870
Quick Summary:

Kenwood’s easy installation compact KAC-M1804 booster amplifier is small in size so it can fit even the most limited installation areas.

Condition: New

Save: £113.56 (57%)
rrp: £199.98
This product has been discontinued

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Key Features

KACM1804 Compact In Line 4Channel Digital Amplifier (400W) - Kenwood KAC M1804

Kenwood’s easy installation compact KAC-M1804 booster amplifier is small in size so it can fit even the most limited installation areas. The built-in 400W digital amplifier will transform your vehicle’s original sound system. Music will sound more dynamic and clearer with improved bass performance.
  • 4 channel digital (Class D) amplifier
  • Maximum output power 400W
  • 4 x 45W @ 4ohm (CEA-2006 standard)
  • RCA / Speaker level input
  • Signal sensing turn-on/off
  • Power MOS-FET switching power supply
  • Compact size (140 x 34 x 90mm)

Download image of Kenwood KAC M1804 Click here for Image of Kenwood KAC M1804
Technical Specification
Amplifier Features:
  • Class D Amplifier
  • Full Range Digital Amplifier
  • Load Capability - 4Ω Stable
  • Maximum power output - 400W
  • Rated power output (4Ω) - 45W x 4 (4Ω)
  • CEA-2006 Compliant
  • Switched Mode Power supply - Yes, Power MOS-FET
  • Signal Sensing Turn-on - Yes
  • Line in - 4 RCA / Speaker level
  • Speaker level Input
  • Extruded aluminum het sink design chassis
  • DC cable Supplied
  • Input Impedance - 10kΩ
  • Signal to Noise Ratio - 90dB
  • Signal to noise ratio (CEA-2006) - 74dBa (Reference: 1 Watt into 4 Ohms)
  • Frequency response (+0dB, -3dB) - 20Hz ~ 20Hz
  • Operating voltage - 14.4V (11V ~ 16V allowable)
  • Maximum current consumption - 15A
  • Dimensions (WxHxD) - 140 x 34 x 90(mm),
  • Weight - 0.5kg
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Questions/Answers About This Product
  • Question: 26 December 2016
    Car: Renault Megane - Megane III 2007>

    Would this fit my standard headunit and will it power 4 Alpine SPG-13CS 250W 13cm 2-way component speakers system at the front and back?

    Cars a 2010 Renaultsport Megane 250.



    thanks for your question, yest the KAC will power the speakers, it will work with your factory head unit if it has preouts/RCA connection

    Found Useful? Yes 

  • Question: 30 June 2016
    Car: Mercedes

    I've got a Kenwood DNX8220bt that I want to fit into a Merc SL500 (2002) which has fibre optic Bose amp.
    Can I use this a Amp?
    Will it power Bose speakers?

    Good afternoon
    A full rewire of your system will be required to bypass the bose system and that amp will be fine and depending on the speaker layout then some passive crossovers might be required.
    I would advise visiting one of our stores for professional installation as this can be a complicated job.
    The impedance of the bose speakers will also need to be checked as they can be too low for some aftermarket amps to function correctly.

    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:

120 - 122 Alfreton Road, Nottingham, Nottinghamshire, NG7 3NR
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