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  Alpine KTP-445U Head Unit Power Pack 45W x 4 Car A
Enter the Crutchfield Research Centre & Video
In Stock Upgrade any car radio to 45 watts RMS X 4

99 people say
List Price: CAD $199.99

Product Code: 500KTP445U

Overview Details Accessories
Alpine Authorized Online Dealer

More power, less hassle

Want a simple way to crank up the power of your receiver? Alpine's "Power Pack" amplifier increases your receiver's power output to 45 watts RMS by 4 channels. That's a big jump up from the 7-20 watts per channel typically put out by a car radio, and plenty of power to drive high-performance speakers or keep up with a big subwoofer amplifier. Best of all, this compact amplifier is so efficient you can often run it off the same circuit that powers your receiver. A universal plug lets you feed a signal via RCA outputs or speaker-level wiring.

The KTP-445U will work with just about any car stereo, but it's not a plug-and-play installation — you'll have to wire it into your system. If your car receiver's power circuit is protected by a 15-amp or larger fuse (check your fuse box or owner's manual), you can tap into it to power your KTP-445U. Otherwise, you'll have to run a power wire to the battery. Be sure to add a 15-amp inline fuse as close to the battery as possible.

You can install this compact amp behind most dashboards, but you'll need 4-channel patch cables to connect your car stereo to the amp's preamp inputs. You can also splice into your speaker wiring to get signal to the KTP-445U.

Important Note: The KTP-445U Power Pack won't work in a system with an active factory amplifier. You'll have to bypass the factory amp if you want to upgrade your power with the KTP-445U, and we don't recommend using this Alpine amp to replace a factory amp with more than 4 channels. Please contact an Advisor at 1-800-297-9469 to check compatibility if you have any questions.

   » compact Class D amplifier for factory and aftermarket receivers
   » universal plug lets you send signal from RCA outputs or speaker-level wiring
   » runs off same power circuit as receiver (must be 15-amp or more)
   » 4-channel amplifier
   » 45 watts RMS x 4 at 4 ohms (CEA-2006 compliant)
   » built-in high-pass crossover (selectable 60, 80, 120 Hz at 12 dB/octave)
   » selectable gain switch (high/low) and switchable 2- or 4-channel operation
   » fuse: 15A
   » dimensions: 7-7/8"W x 1-1/2"H x 2-9/16"D
   » warranty: 1 year

Alpine KTP-445U Power Pack Reviews

99 people say

Awsume Amp July-08-14
Reviewer: Mack from LaGrange, IN  
Totally made my speakers come alive!

2011 gmc sierra extended cab June-30-14
Reviewer: Scott from Ky  
Awesome little amp , installed it with factory unit with some alpine  6-1/4.

That added punch June-24-14
Reviewer: RMJ from Fredericksburg,VA  
This amp gives my system that added punch that makes the tunes blast.

Nice little Amp (2nd review) June-16-14
Reviewer: Juan  
Please read my previous comments of this amplifier for a more in-depth review of this product. After removing the power wire that ran from the amplifier and piggybacked off of the head unit. I decided to run the wire directly to the vehicles battery by simply piggybacking off the 8 gauge wire that ran to the amplifier powering my subs and this amplifier no longer suffers from clipping much better performance with the gaines adjusted at the 1 o'clock position

works well June-14-14
Reviewer: Anonymous person from st. peters, mo  
Paired this with a new Kenwood kdc-x598 and my older polk speakers in my fox mustang so that I could even be able to hear my stereo over my loud exhaust at cruise speed, but didn't want to have to mount it back near my sub and amp that I have setup for quick removal on track day.   Was easy to wire up, plenty of extra wire in the harness to put it just about anywhere in the dash (and small enough too), used the rca inputs, and it sounds really good even without messing with the gain settings on the amp.  I just used some strong velcro to mount it on the floor behind the reciever.  Gives enough power to actually get clean mids and highs with the windows down at speed (bass was never a problem).

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Alpine KTP-445U Power Pack CAD $199.99