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Alpine KTP-445U 4 Channel Amplifier

Availability: In stock

Alpine KTP-445U 4 Channel Amplifier, Compact Size.


Alpine KTP-445U 4 Channel Amplifier

The Alpine KTP-445U Universal Power Pack Upgrade.

This Universal Power-Pack offers a higher output and a much more dynamic response. The Alpine KTP-445U 4 channel amplifier Universal Power-Pack amplifies both an aftermarket or factory installed head unit power output, resulting up to a 150% power increase over the original power from the receivers built-in amplifier.


Compact size of the KTP-445U 4 channel amplifier allows it to fit where most amplifiers simply will not. The Alpine KTP-445U comes equipped with the RCA and Auto-Sensing-Speaker level connectors and it fits behind the head unit in the dash of most vehicles. It’s small and compact at only 7-7/16  x 1-1/2 x 2-1/2 inch. The size and flexible wires make the Power-Pack an easy choice to make when looking to save space.

Best Signal-to-Noise Contender In Its Class

In order to ensure that Alpine sound quality is heard at your ears, they've created a platform that offers an unbelievably low noise floor. They took extra care to ensure a clean signal path, with no extraneous interference. The end result: The Power Pack boasts 1 Watt Signal-to-Noise Ratio of 82dB or better.

Additional Information

Filters from full range to selectable range: 60Hz, 80Hz or 120Hz to fine-tune your crossover points
Power Handling 45 Watts x 4 @ 4Ω/2Ω, 90 Watts x 2 @ 4Ω Bridged
Frequency Response < 0.03% THD+N @ 1W, 1% THD+N @ rated power
Dimensions 7-7/16” x 1-1/2” x 2-1/2”

Customer Reviews

better sound Review by DamItImHungry
i have a friend that is really into car music and i wanted mor sound and didn't know how to get it. he said this alpine amp could make all my speakers louder.... was he right! love this thing (Posted on 2/22/2017)

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