4 Channel Amplifiers

4-channel car amplifiers for powering front and rear speakers, or front speakers plus a subwoofer, from brands including Helix, JL Audio, Audison, Focal, Hertz and Kicker.

Power your car audio system with premium 4-channel amplifiers from top brands like Helix, JL Audio and Audison. Ideal for driving multiple speakers, these amplifiers deliver clear sound and strong performance, from compact, discreet units to high-end designs. All stock is UK-spec, with fast UK delivery and expert service from our Nottingham team.
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4-channel amplifier ranges

  • Compact and micro amps: Vibe Powerbox M series, Pioneer GM-D and GM-DX, Focal Impulse 4.320, Ground Zero micro and mini amps and Phoenix Gold ZXM.
  • Amps with built-in DSP: Kicker KEY200.4, Vibe Powerbox 65.4-8 DSP, Match UP 4DSP, Phoenix Gold ZDA4.8 and the Zapco HB 46II 4A DSP.
  • Class A/B amps: Hertz Dieci DP 4.300 and DP 4.400, Helix C Four, Focal AP 4340, Morel MPS 4.400 and Phoenix Gold ZQ5004.
  • Class D amps: Audison Forza AF C4D, JL Audio JD400/4 and RD400/4, Alpine R2 and S2, Hertz Cento Power CP 4.800 and Kicker WXA.
  • High-power compact amps: Audison SR 4.300 and SR 4.500.
  • Head unit and factory system upgrades: Helix Amplify 204, Wavtech Link300.4mini, Kicker KEY200.4ISO, Phoenix Gold ZXM400.4ISO and the Alpine KTP 445A power pack.

Which 4-channel amplifier should I choose?

Match the amplifier's RMS output per channel to your speakers' RMS rating, and check the space you have available; micro amps fit behind dashboards or under seats. If you are keeping a factory head unit, choose a model with high-level inputs or built-in DSP to correct the signal. Many 4-channel amps are bridgeable, letting you run two speakers on two channels and a subwoofer on the other two. If you only need to power a subwoofer, see our mono amplifiers, or for a full active system look at 5-channel amplifiers.

4 Channel Amplifiers FAQs

Q: Can a 4-channel amplifier power a subwoofer?

A: Yes, if it is bridgeable. Bridging two channels combines their output for a subwoofer, while the other two channels power a pair of speakers.

Q: Can I add a 4-channel amp to my factory stereo?

A: Yes. Choose an amplifier with high-level speaker inputs, or a DSP amplifier, to connect directly to the factory system.

Q: Can CEN install my amplifier?

A: Yes. CEN can supply and fit amplifiers, wiring and DSP tuning at our Beeston, Nottingham workshop.