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How to install the Alpine KTP-445 Power Pack

Upgrade your car stereo with this compact, powerful amplifier

Robert Ferency-Viars is the managing editor for the Crutchfield car A/V learning content, and has been with the company since 1999. A Virginia native from the heart of the Blue Ridge Mountains, he loves spending time with his wonderful wife and sons, listening to music, writing, and playing games with friends. Robert's love for car audio began at 16 when he installed his first car stereo.

More from Robert Ferency-Viars

This video demonstrates how easy it is to install the Alpine KTP-445 Power Pack amplifier module. The Power Pack bumps up the power output of your Alpine stereo to 45-watts RMS per channel, giving your music increased clarity and detail. You get the power and improved sound of an external amplifier at a fraction of the cost and with a much easier installation.

Note: Since this video article first appeared, Alpine replaced the KPT-445 model with the KTP-445A, which works the same way as the KTP-445.

Video Transcript

In this short Crutchfield video we're borrowing a coworker's Jeep to show you how easy it is to install the Alpine KTP-445 Power Pack. The Power Pack is an add-on, 45-watts per channel amplifier module that works with Alpine stereos.

Installing the Power Pack is really simple. It connects between the stereo and the original Alpine wiring harness. First you'll have to remove your stereo from the dash. Carefully pull off the trim ring as we've done here and use the removal tools that came with your stereo to release the locking clips on the sides. Then pull out the stereo and carefully unplug the wires and set it aside.

Next find a place to mount the Power Pack behind your dash. Alpine made the wires long enough to reach the stereo from just about anywhere in the dash. In our case, we were easily able to stick the Power Pack right behind the Jeep's glove box.

Now it's time to hook it up. Plug one end of the Power Pack's wires into the harness that's already connected to your cars wiring, then grab the stereo and plug the other connector from the Power Pack into the back of it. One nice thing is that the plugs only fit one way and that makes it easy to get right.

Now carefully re-install your stereo and guess what? You've more than doubled the power in your Alpine stereo without the extra work of installing an outboard amp and that extra power will bring out musical details you weren't hearing before. You can learn more about the Alpine Power Pack at or give us a call at 1-800-555-9408.

  • alex herman from memphis

    Posted on 8/18/2016 2:26:30 AM

    Quick question. if I use this with an aftermarket stereo, will using a stock wiring be fine?

  • Alexander Hrabe from Crutchfield

    Posted on 8/19/2016 7:37:01 AM

    Alex, yes, you'll connect the Alpine harness to your factory wiring. However, you'll the aftermarket stereo will need to be an Alpine.

  • Brandon from Denver

    Posted on 9/2/2016 1:43:35 PM

    Is the install this easy for all stock head units, or just for Alpine head units? Any wire cutting/splicing needed for a 2016 Tacoma Entune head unit?

  • Alexander Hrabe from Crutchfield

    Posted on 9/6/2016 12:30:58 PM

    Brandon, this works with select Alpine stereos only. If you'd like to add a compact amp to your factory system, give us a call and an advisor will help you find the right one for your system.

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