Search  for anything...
Alpine

Alpine KTA-450 4-Channel Power Pack Amplifier with Dynamic Peak Power 45W RMS x 4, at 2 Or 4 Ohms

  • Based on 372 reviews
Condition: New
Checking for the best price...
$269.95 Why this price?
New Year Deal · 70% off was $907.90

Buy Now, Pay Later

As low as $44.99 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE refund/replacement until Jan 31, 2026

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 4 left in stock, order soon!
Fulfilled by Amazon
Arrives Friday, Feb 13
Order within 12 hours and 49 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Features

  • Alpine's Class D amplifier circuit with Dynamic Peak Power (D.P.P.)
  • Compact size, measuring just 7 W x 3.5 H x 1.25 D
  • Dynamic Peak Power (DPP) technology doubles the power during dynamic musical passages
  • Thanks to the efficient power needs of the DPP technology, the KTA-450 does not require a new power supply wire at the battery.
  • DPP prevents the KTA-450 from clipping by supplying up to double the power for sudden, dynamic sounds.

Item dimensions L x W x H: 10 x 7 x 4 inches


Voltage: 14.4 Volts


Manufacturer: Alpine


Maximum Supply Voltage: 14.4 Volts


Minimum Supply Voltage: 14.4 Volts (DC)


Product Dimensions ‏ : ‎ 10 x 7 x 4 inches; 1.1 Pounds


Item model number ‏ : ‎ KTA-450


Date First Available ‏ : ‎ March 25, 2019


Manufacturer ‏ : ‎ Alpine


Customer Reviews: 4.6 4.6 out of 5 stars (374)


Item dimensions L x W x H: ‎10 x 7 x 4 inches


Voltage: ‎14.4 Volts


Manufacturer: ‎Alpine


Maximum Supply Voltage: ‎14.4 Volts


Minimum Supply Voltage: ‎14.4 Volts (DC)


Mounting Type: ‎Surface Mount


Brand: ‎Alpine


Number of Channels: ‎4


Output Power: ‎200 Watts


Package Type Name: ‎Retail Box


Specification Met: ‎Cta-2006


Material: ‎Metal, Plastic


UPC: ‎793276242822


Item Weight: ‎1.1 pounds


Product Dimensions: ‎10 x 7 x 4 inches


Item model number: ‎KTA-450


Date First Available: March 25, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Feb 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Amazing little Amp!
I ordered this with the Alpine ILX-W670 and what a difference it made! I tried the W670 by itself first without the amp and then connected the amp and it made a BIG difference in sound quality and detail. I installed it in a 2018 Nissan Titan with Infinity speakers. I already had the Maestro RR module, so I just had to add one connector to it (supplied with the Maestro) and re-flash it to retain the steering wheel controls. Watch some videos on how to install the amp and how to configure the Crossover/4-Channel/RCA settings and it's pretty straightforward. I had to cut the speaker wire connection on the Maestro harness (Idatalink Maestro Acc-HU-ALP1) for the W670 and connect the speaker wires from the amp to the wires going to the speakers. Well worth the money. Gives SERIOUS punch and clarity to my system. ... show more
Reviewed in the United States on April 14, 2025 by AWB
    • Great Entry Level
I paired this amplifier with an ILXW650 Headunit in my 04 IS300 bypassing the factory amplifier and powering JBL speakers and tweeters and OMG this setup beats most entry level premium audio packages in even newer cars. The small footprint and close proximity to the headunit significantly simplifies the install and really enriches the audio experience. Sure, you’re not hitting ridiculous db levels or winning any competitions, but for a daily driver, this punches above its weight class. Highly recommend. ... show more
Reviewed in the United States on February 18, 2025 by Jared Davenport
    • Amazing sound, great bang for your buck!
I used to do mobile audio and alarm installation so i have extensive knowledge on the subject. Alpine makes EXCELLENT products, always have, and still do. This amp was added in my 2014 honda pilot which i wanted to keep the stock head unit. It has alpine type R separates in all 4 doors and this little amp now powers them and it sounds AMAZING. I had the speakers connected to the stock deck since i bought the car new in 2014 and i was really missing out. Highly recommended- its paired it with the audio control LC7i PRO. Sounds absolutely astonishing for the amount spent on everything. If you're looking to keep the install simple and nothing crazy, this is a great option. Also, i have it sitting under the carpet below the glove box. ... show more
Reviewed in the United States on May 7, 2024 by D. G.
    • Great little amp!
For as small as it is it has great sound and I like how it fits in my dash. Easy to install.
Reviewed in the United States on December 19, 2024 by Michael Hahn
    • Power!!!
Enough power for all my kenwood speakers
Reviewed in the United States on October 28, 2025 by mrmike47
    • Very powerful
Very powerful little amp..
Reviewed in the United States on September 28, 2025 by Bobby Thompson
    • I like it
I love it package ita good really light
Reviewed in the United States on September 24, 2025 by Kolton
    • Not working
The geek squad installed it with the Alpine speakers I purchased with the Alpine head unit from best buy. They had run out of the Alpine 445 and 450 power amp I have to wait till June 22 for the third attempt to have this unit too work. Geek squad twice fixed the problem and it still stops working.
Reviewed in the United States on June 17, 2021 by Ramses Dizon

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...