Why Choose Crutchfield?
Great gear and expert advice
Our experts help you pick the ideal gear for your needs.Meet our advisors
Free tech support for the life of your gear.Read about our one-on-one expert help
You may return items that are complete and like new for any reason within 60 days.See the details of our return policy
Earn one point for every dollar you spend and use those points to save on future purchases.Get full details on Crutchfield Rewards
Deep discounts on car installation gear
We offer vehicle-specific installation instructions, dash kits, wiring harnesses, and speaker accessories at deeply discounted prices with car stereo and speaker purchases. Available for most vehicles.Learn more
Trusted since 1974
Our customers have trusted us with their business, and they’ve helped us win awards for our service.Check out our most recent awards
The manufacturer’s warranty always applies.See more details
Alpine KTP-445 Power Pack
Upgrade your Alpine receiver to 45 watts RMS x 4
Our take on the Alpine KTP-445 Power Pack by Crutchfield's Zak Billmeier
The KTP-445 connects to any 2005 and newer Alpine headunit that uses a black power harness. It will not work with the CDE-100 receiver.
Want a simple way to kick up the power of your Alpine receiver? Alpine's "Power Pack" amplifier increases your receiver's power output to 45 watts RMS power by 4 channels — plenty of power to drive high-performance speakers or keep up with a big subwoofer amplifier. Best of all, you install the compact Power Pack by plugging it directly into your Alpine receiver's wire harness — no extra wires to run, and no other connections needed.
Note: The KTP-445 Power Pack won't work in systems where an outboard factory amplifier is still active. You'll have to bypass the factory amp if you want to upgrade your power with the KTP-445. Please contact an Advisor at 1-888-955-6000 to check compatibility if you have any questions.
Note: Sorry, Crutchfield cannot ship Alpine products to Guam or Puerto Rico.
not plug and play compatible with Alpine CDE-110 (gray connector). you can cut off the connectors on either end of the amplifier and splice in though. hook the blue/white wire to switched 12V/ignition. If you only hook up the red wire to ignition the amplifier won't power on.
Jeff A, MA
What's in the Box:
- Head Unit Power Pack (45W x 4 RMS) with attached 38" harness terminated by a male Alpine connector on one end and an attached 29" harness terminated by a female Alpine connector on other end
Alpine KTP-445 Power Pack Reviews
Average Customer Review(s):
Thanks for submitting your review
Features and Specs
|RMS Power Output (Watts x Channels)||
45 x 4
|Peak Power Output (Watts x Channels)||---|
|Power at 2 Ohms (Watts x Channels)||N/A|
|Bridged Power (Watts x Channels)||N/A|
|Minimum Impedance Bridged||N/A|
|Minimum Impedance Unbridged||4|
|Best Frequency Response||20-20k Hz|
|THD at Rated RMS Power||1%|
|Signal to Noise Ratio||N/A|
|Low-Pass Crossover Frequency||N/A|
|Low-Pass Slope (dB/octave)||N/A|
|High-Pass Crossover Frequency||N/A|
|High-Pass Slope (dB/octave)||N/A|
|Bass Boost Frequency||N/A|
|Speaker Level Inputs||Harness|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
Overview: The Alpine KTP-445 Head Unit Power Pack is an easy-to-install power upgrade amplifier that allows you to add higher output and more dynamic response to your Alpine headunit. The KTP-445 amplifies your Alpine headunit's power output, resulting in a 150 percent power increase over the original power from the headunit's built-in amplifier.
Compatibility: The KTP-445 connects to any 2005 and newer Alpine headunit that has a black power harness. Please check with your Crutchfield Product Advisor to confirm compatibility.
Installation: Since the KTP-445 is small and compact, it installs behind your Alpine headunit in the dash of most vehicles. Its plug-and-play connections keep it simple, without requiring additional wiring or special tuning. The male harness connects to the rear plug on your Alpine headunit while the female harness plugs into your Alpine headunit's harness (included with your Alpine headunit). Then connect the wires from the Alpine headunit's harness to your factory harness adapter (sold separately).
Note: The factory radio circuit needs to be a minimum of 15A. If it is not, a separate power and ground will need to be installed for the KTP-445.
Controls: A high/low gain switch on the bottom of the amplifier allows for proper gain settings, whether or not a subwoofer is part of the system.
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.
Product reviews from the Crutchfield Labs
by Robert Ferency-Viars
See how easy it is to install the Alpine KTP-445 Power Pack amplifier module, which will more than double your stereo's power.