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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

148 people say
Our Price: CAD $239.99

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.

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

148 people say

Such a powerful amp for the compact dize. April-10-16
Reviewer: Jerry from Ft Worth, TX  
Excellent amp to my existing factory radio. My radio is 300% clear and loud with gain turned down to zero for my factory speakers.

I have a alpine 9425 &69 Rs nothing but awsome,No March-16-16
Reviewer: David from Inkster, MI  
I have loved my 9428 and 69 for about 10 yes. Time to HD149BT & 69R the processors are top notch have to get more, but Im on ssi so 1 peace at a time. Please never change. I will only buy Alpint. Thank you. Always wanted you cence I was a young boy. Thanks for all the great music.

Great upgrade March-12-16
Reviewer: Frank D from houston, TX  
Easy install, fit in glove box, 4 channel amp improved the output of the Pioneer 4100NEX head unit with RCA plugs.  After setting the optimal level gain, the sound was full and rich. Using Kicker aftermarket in front and rear.

Alpine KTP-445U Power Pack February-25-16
Reviewer: Jason from Madelia, MN  
This Alpine power pack rocks! It pushes way more power to my door speakers than my in dash receiver did and definitely makes a difference in sound quality. It's small and compact and actually mounted behind my double-din in dash receiver so it's a clean install and hidden. I this in my 2012 Chevy Colorado powering my 4 door speakers and I am definitely impressed with the difference this Alpine makes. If I had to purchase it again I would no doubt.

Small but powerful February-16-16
Reviewer: 2015 Toyota Tundra Crewmax from columbia, MD  
Excellent sound

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Alpine KTP-445U Power Pack CAD $239.99