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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

168 people say
Our Price: CAD $239.99

In Stock
Product Code: 500KTP445U

Overview Details Accessories
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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.

Product Highlights:
   » 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

168 people say

Reviewer: Anonymous person from Tampa, FL  
Overall, I am very pleased with this purchase.  I am surprised that when RCA jacks cannot be used, the solution is to cut the already short wires and extend them.  A non-rca harness should be included with sufficient length.

One more please December-19-16
Reviewer: Tom from Grant twsp, MI  
This is the third ktp-445 amp I have purchased from Crutchfield, installed in boat car and truck. If your plan is simply to make significant upgrade to an existing sound system with stealth, space savings, and cost savings, you can't beat this amp. Inputs, auto turn on, adjustments, and reliability are the features I was looking for.

Reviewer: Anonymous person from Huntingdon, PA  
I installed this unit with the purchase of a new JVC head unit because after installing my Kicker speakers, I still didn't have clear sound. This little amp (really little) totally brought my speakers to life. I can now hear all of the instruments clearly. The best thing is that this amp is so small I was able to install it just behind the head unit without trouble!

Reviewer: Jonathan c from Okanagan, wa  
Nice sounds good

Works well, easy solution November-28-16
Reviewer: Anonymous person from Marlboro, NJ  
Definitely makes a significant difference. Driving JL C2 690tx (which were asleep with the aftermarket Pioneer HU) and JL C2 350x which were fine without an amp. Was able to fit it behind the stereo

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Alpine KTP-445U Power Pack CAD $239.99