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  Alpine KTP-445U Head Unit Power Pack 45W x 4 Car A
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Compact upgrade for any car radio — 45 watts RMS X 4

142 people say
Our Price: CAD $219.99

In Stock
Product Code: 500KTP445U

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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.

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.

Installation Note: We recommend running a dedicated constant power wire to the battery for optimal performance from this Alpine amp — we offer an inexpensive wiring kit for this installation. This high-powered amp won't work in systems where an outboard factory amplifier is still active.

   » compact Class D amplifier for factory and aftermarket receivers
   » universal plug lets you send signal from RCA outputs or speaker-level wiring
   » 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

142 people say

Super powerful February-10-16
Reviewer: Juice from rockville, MD  
Great amp, great price, super powerful.  What more do you want

Great Amp January-25-16
Reviewer: Clinton from janesville, WI  
After changing out the speakers I didn't feel like there was that much of a change.  Added this amp, it made the speakers come alive.  It was easy to install and fit neatly behind my dash.

Powerful little punch January-22-16
Reviewer: Martin from reedley, CA  
Great for people who need an amp in a very small space (does not require a separate wire kit, it piggy backs on the receiver).  It even fits behind the dash in most cases.  It is also a great idea if you are adding new speakers in the door along with a new receiver and want more than what the receiver alone provides (usually less than 23watts)

2015 Ram 1500 January-22-16
Reviewer: Nick C from Texas  
I purchased this product along with 6 Kicker speakers for my  2015 RAM 1500.  I had this amplifier installed professionally and it was mounted inside the glove box of the truck so that I could adjust the gain controls if needed.  The amplifier was wired directly to the factory HU (8 inch touch screen, no Alpine) but I can't comment on installation, only sound quality.  The quality is AMAZING.  I had to have researched the Power Pack for at least a year before finally making the purchase, and man was that a good call.  I literally have the gain turned down to almost zero, and this bad boy rocks the house.  Such a noticeable difference before and after.  The Kicker speakers really opened up and sound great with NO distortion what so ever.  Anybody looking to upgrade their factor HU on a new model vehicle, I highly recommend this product.  One comment I will add, I had quite  an annoying hiss and static from the speaker after this was set this up, which typically I hear is from a Ground issue.  For my particular case, it was not.  The gain was too high!! So if you hear static through the speakers, turn the gain down (counter clock wise) until it sounds crisp with no distortion.

Nice, small power December-06-15
Reviewer: MattO from North Carolina  
I installed this in a 2008 Tundra.  I removed the panel to which the glove box is attached and put this on the back side of it.  It is out of sight but I can adjust the gain easily by looking under the glove box.  I'm sure that description is clear as mud.  It made the stock speakers really come alive.  I almost didn't change the speakers out as planned because they sounded so good.

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Alpine KTP-445U Power Pack CAD $219.99