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Alpine KTA450 4 Channel Compact Amplifier with 45W Dynamic Peak Power

4.4314 product ratings
Sky High Car Audio Cable (109840)
99.4% positive feedback
Price:
US $14.84
ApproximatelyAU $22.87
+ $34.86 postage
Estimated delivery Thu, 7 Aug - Mon, 18 Aug
Returns:
30-day returns. Buyer pays for return postage. If you use an eBay postage label, it will be deducted from your refund amount.
Condition:
Brand New
Multi Conductor Wire. - Trinity Audio Solutions. Trinity Audio. Trinity Audio Solutions. Sky High Car Audio Speakers. Sky High Apparel. Alternator Distribution Block. Fi Car Audio.

About this product

Product Identifiers

BrandAlpine
MPNKTA450
UPC0793276242822
eBay Product ID (ePID)21031154845

All listings for this product

Buy It Now
New
Sky High Car Audio Single GM Side Post Adaptor Short Amp Stud Car Audio
item 1 Sky High Car Audio Single GM Side Post Adaptor Short Amp Stud Car Audio
AU $22.87
+AU $53.73 postage
Alpine KTA450 4 Channel Compact Amplifier with 45W Dynamic Peak Power
item 2 Alpine KTA450 4 Channel Compact Amplifier with 45W Dynamic Peak Power
AU $423.77
+AU $84.11 postage
Alpine KTA-450 Car Audio 4 Channel 400W Amp Power Pack Class D Amplifier New
item 3 Alpine KTA-450 Car Audio 4 Channel 400W Amp Power Pack Class D Amplifier New
AU $457.68
+AU $66.56 postage

Ratings and reviews

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4.4
14 product ratings
  • 9 users rated this 5 out of 5 stars
  • 3 users rated this 4 out of 5 stars
  • 1 users rated this 3 out of 5 stars
  • 1 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Good sound quality

Good value

Small form factor

Most relevant reviews

  • by trz4628-cqvwy9zb
    02 Jan, 2020Top favourable review

    The next level

    For me it just doesn't get any better than Alpine. The best quality a person can buy . And the price was really reasonable it has taken my car and my enjoyment to the next level and beyond Thanks Alpine

    Verified purchase: YesCondition: New

  • by 12894rc10
    02 Apr, 2020Top critical review

    I have not installed it yet....but it's the smallest, most powerful class D amp I have ever seen, and screws to the back of the head unit

    This little amp screws to the back of almost any Alpine head unit. The head unit I bought had 50 watts MAX, and only 14 watts RMS. With the "piggyback" amp here bolts to the bac,k of the thin double din head unit, and fits in almost any double din head unit slot..behind the actual stereo. This little class D amp fires off 50 watts RMS....that's right....RMS. So make sure you buy high quality 65 to 100 watt RMS door speakers. I am hoping that this amp will free up the head unit power. The head unit will then power my dash speakers. Dash speakers are usually lower power and the base 14 watt per channel will power my two dash speakers and I can bridge the two rear channels to power my Infinity mid dash sub. (This is a relatively difficult unit to install because of all the harnesses...but it only needs to be installed once). I also bought an 800 w rms @ 1ohm and a dual 12" 1000 watt rms (2 x 450 RMS). This Optima Turbo is gonna ROCK.

    Verified purchase: YesCondition: New

  • by diecastman79
    16 Feb, 2021

    Bang for the buck!

    I originally bought the iLX-w650 headset to pair with one of these amps, if I felt the need for more power. After about a year, this newer KTA-450 came out as an improved version of the previous. Install was super easy, and it certainly was WELL worth it for the money. The sound is awesome, especially considering the size. I'm running four 6.5" coaxial speakers at 50x4 RMS, and am thoroughly enjoying it. I will probably add a subwoofer and use the RCA's that are still available for that amp, to round off the sound completely.

    Verified purchase: YesCondition: New

  • by percy072jason
    20 Jun, 2022

    Perfect for a stealth install!

    Great compact little amp piggy backed on my Alpine iLX-W650 head unit. So far seems to have good power for it's size...set the gains to about 10 O'clock to keep the noise floor to a minimum.

    Verified purchase: YesCondition: New

  • by abw3alton
    10 Mar, 2020

    Good things come in small packages

    Great product! Came very quick too !

    Verified purchase: YesCondition: New

  • by fla-john
    09 Dec, 2020

    Small but powerful amp

    Links up perfectly with the Alpine ILX- 650. Nothing to hide just links up right behind the radio! Can’t beat it for the price, I would highly recommend

    Verified purchase: YesCondition: New

  • by ccol_us_akwrgchi
    19 Feb, 2022

    The best

    Like all Alpine system this is one of the greatest. Have not have a chance to get it to work. But I give it a 100% approval.

    Verified purchase: YesCondition: Pre-owned

  • by mopar_225s
    19 Sep, 2024

    Used and in good shape. Missing some ha...

    Used and in good shape. Missing some hardware.

    Verified purchase: YesCondition: Pre-owned

  • by lyame_27
    03 Jul, 2022

    Meh

    Little underpowered but good for most consumer applications.

    Verified purchase: YesCondition: New

  • by 7mnzj-25
    06 Jun, 2025

    This amp made a huge difference in my so...

    This amp made a huge difference in my sound system highly recommend

    Verified purchase: YesCondition: New

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