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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

123 people say
Our Price: CAD $219.99

In Stock
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.

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

123 people say

Does the trick May-22-15
Reviewer: Craig from Colorado  
Easy to install if you have 15 amp fuse radio line. Does what it says it will.

Not as good as I was hoping April-18-15
Reviewer: Manny from San Antonio,Texas  
This amp is so small it will fit anywhere. Had it hid inside my dash next to my speedometer cluster. It gets hot w/o air circulation, never cut off though. I have all my amps set with SMD DD-1 so there is no distortion in my system. Bought this amp for my tweeters up front, have a Fosgate T1000 for my sub(NVX VCW122) and an NVX JAD800.4 for my Alpine Type R 6x9s and Crescendo 6.5s. This amp is probably best for factory stereos and not so much for aftermarket HUs. I have a Pioneer DEH-x8500BH headunit which distorts at vol 61, max vol is 62. I can't turn up this amp past 54 bcuz it distorts even when amp vol is at min, but I am using the speaker wires to hook it up so maybe that could be a reason. Either way it's a nice amp just not for my application.

Awesome! April-16-15
Reviewer: Bryan M from Illinois  
I installed this amp to the factory stereo on a 2013 Honda Accord LX.  It took a bit of doing as Honda is not generous with the wiring under the dash.  It was very tight.  I spliced into the existing speaker wires which were only 18 gauge but so far, they seem to handle the power pretty well.  As other reviewers have noted, the amp does not come with very long wires on one side so I had to delay the install until the next day so I could pick up some additional wire to expand the connections.  I went direct to the battery for my 12V power source as the factory stereo only had a 10 amp fuse and this amp requires at least a 15 amp fuse to allow you to tie into the stereo's hot lead for power. For those of you installing this amp on an Accord, the pass through on the fire wall is hard to find.  I said a prayer and stumbled across it.  It is behind the brake pedal and a bit to the left.  You have to cut some of the sound proofing material to reach the grommet.  You can first locate it by sticking your hand behind the sound proofing material until you feel the grommet.  Once you find it, you are not home-free.  The opening passes through a frame member and exits after a 90 degree turn.  You will need a flashlight to shine into the grommet hole and locate the exiting light under the hood down below the brake reservoir.  Have fun.  Once installed, the difference is huge!  I have 6.5 inch Kenwoods in the front and 6.5 inch Kickers in the back.  The Kickers take the extra power better!

Big things do come in small packages April-14-15
Reviewer: Anonymous person from Opelika al  
Thought I needed new speakers. All I needed was more juice.alpine all the way

Power Pack April-09-15
Reviewer: Tim from Monroeville OH  
This really improved the sound. Great service. I even called them on Easter with a question and it was answered right away. Thanks to my FORD dealer for telling me to call this company.

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Alpine KTP-445U Power Pack CAD $219.99