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Alpine KTP-445

Alpine KTP-445
alaScore 85

184 reviews

Dec, 2018

alaTest has collected and analyzed 184 reviews of Alpine KTP-445. The average rating for this product is 4.5/5, compared to an average rating of 4.1/5 for other products in the same category for all reviews. People really like the reliability and design. The size and price also get good comments.

usability, price, size, design, reliability

We analyzed user and expert ratings, product age and more factors. Compared to other products in the same category the Alpine KTP-445 is awarded an overall alaScore™ of 85/100 = Very good quality.

Review analysis

(Based on 184 reviews)

User Reviews  

Showing 175 review(s)

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Showing 1 - 175 of 175 Show Reviews: in English | in other languages (2)

Consumer review ( review summary for Alpine KTP-445


alaTest has collected and analyzed 165 user reviews of Alpine KTP-445 from The average user rating for this product is 4.5/5, compared to an average user rating of 4.0/5 for other products in the same category on Views about the reliability and design are on the whole positive. The size and price are also appreciated.

usability, price, size, design, reliability

93% of the reviews on give this product a positive rating.

This summary is based on the products: Alpine KTP-445U 4-channel Power Pack AmplifierAlpine KTP-445U 4-channel Power Pack Amplifier

Dec, 2018

Consumer review (

Big bang for the buck


I have a nice system and a nice alpine deck this amp is great little power pack, pushes my infinity components very nice,easy to install can't get any easier . Sweet amp for the money.

Packed with power, Great Sound, Easy to Install, Compact

Dec, 2011

Consumer review (



AMAZING... I immediately noticed the difference... worth every penny plus this is the cheapest place to buy it... Im pretty sure the inside of my car can get louder than the superbowl football stadium with this upgrade

Durable, Amazing, Easy to Install, Versatile, Easy To Use

It isn't free

Feb, 2010

Consumer review (

For [$] can u go wrong


Like the heading says- For [$] can u go wrong?This little guy produces lots of high's & a bit of low-end. I have a bazooka tube linked to this system which helps w/ the fill-in. In my opinion, I would totally recommend this product to anyone...

Durable, Easy to Install, Easy To Use, Versatile

Jan, 2010

Consumer review (

excellent amp for the price


just right. doesnt take alot of room, and provides enough power to get a ticket.

Durable, Easy to Install, Easy To Use, Versatile

Nov, 2009

Consumer review (

Simple - Efficient - Effective


Alpine did a great job with this unit and ABT is the right place to buy. Target application was a motorcycle for pairing with an Alpine CDA-9884 head unit. The KTP-445 was a good option given its size, plug and play with the Alpine harness, and low...

Easy to Install, Right Size, Easy To Use


Oct, 2009

Consumer review (

Couldn't be any easier


Very easy to install, plug in and your done! The longest part of the project was finding a suitable spot behind the dash to mount it. It also has a high/low gain switch on the unit but no direction on what it should be set on. The only reference it...

Easy To Use, Durable, Easy to Install

Oct, 2009

Consumer review (

Simple yet spectacular!!!


I bought this so I wouldn't have to install another amp to run my component speakers on. Sound went immediately from weak to vibrant, clean, and full. I waited about three months for them to get this in stock and it was well worth the wait!!! Don't...

Money Saver, Durable, Powerful, Easy to Install, Easy To Use

Jun, 2009

Consumer review (




NO CONS FOR THIS UNIT, Versatile, Durable, Easy To Use, Easy to Install


Jun, 2009

Consumer review (

Really great product THANKS ABT!


First off thank you ABT. Cant find this mini amp anywhere for [$]. the alpine ktp 455 is awesome. for [$] and very easy to install yourself you cant beat. Instead of spending $100+ for just an amp, you have to buy amp kit wires and pay for install if...

Works great, Easy To Use, Easy to Install

None so far

May, 2009

Consumer review (

Alpine KTP-445U Car Amplifier


Got it for my son's 08 Jetta. Works and sounds great.

Product Specifications

The KTP-445 is a unique product that connects to any 2008 Alpine head unit. Its narrow size and slim width allows it to fit behind the head unit in the dash cavity of most vehicles. The KTP-445 connects in-line with the head unit


Amplifier Output:4-channel


Audio output channels:4.0
Built-in crossover: No
Peak power per channel:100

Audio System

Car Audio Type:Amplifier


Energy Star certified: No
RoHS compliance: No

Energy Management

DC input voltage:10 - 14


Manufacturer:Alpine Electronics
Model:KTP-445 Head Unit Power Pack
Packaged Quantity:1
Product Line:Alpine


LED Indicators: No


DC input voltage:10 - 14

Technical Details

Color of product:Black
Connectivity Technology:Wired
On/Off switch: No
Volume Control: No
Wireless technologies:Wired