Crutchfield Canada
FREE shipping on all orders
(yep, we mean everything)
Get email updates
Sign up
Expert Advisors

  Alpine KTP-445U Head Unit Power Pack 45W x 4 Car A
Enter the Crutchfield Research Centre & Video
Compact upgrade for any car radio — 45 watts RMS X 4

131 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

131 people say

Nice amp July-02-15
Reviewer: Josh from Ohio  
I am happy with this amp. I have it installed in my 00 S10 regular cab. It is tucked in behind the radio & A/C controls. It fits in there great with both factory deck and aftermarket radio installed. I tapped into the extra aux/cig lighter port below the dash to power it. Perfect spot and is 15AMP rated. Power is enough for me. Anyone with a small standard cab pickup knows that space is at a premium and this small amp allows me external amp power while taking up no room behind the seats.

Decent amp July-01-15
Reviewer: Spicy mchaggis from Norfolk va  
Nice little amp that you can tuck and hide away, the instructions are simple and install is simple. BTW you don't need a 12v turn on, unless your using the 12v remote turn on output. Goes good with alpine type a.

Great for stock HU June-29-15
Reviewer: Eric from Illinois  
This amp is installed in a 2004 Ford Freestar. I have the stick HU still in placed.  With the help of Crutchfield I was able to ID the right wires. Taped into the HU power and ground. Took about 40ish mins to install. Really that was just cutting and stripping the wires.  But once installed the sound improvement was very noticeable. I have Focal 5x7's up front. And Alpine 5x7's Type S in back. I say it made them clearer and cleaner. Got this amp from a friend for ($20) so all in all great deal.  

In the end its a great buy.  

Note* If you are using this with out a sub. As in my case. Remember to take off the HPF.

Alpine Power Pack June-17-15
Reviewer: Anonymous person from Texas  
Great little amp

Great Upgrade June-15-15
Reviewer: Dennis from Iowa  
Small compact and easy to put in even inside the fairing on my 2008 Road Glide.   I could have used some direction on wiring in the power.  Had to loosen my gas tank up to run the power wired.

View All Customer Reviews

Browse for more products in the same category as this item:

Car Audio & Video > Amplifiers, EQs & Processors > Amplifiers
Car Audio & Video > Amplifiers, EQs & Processors
Car Audio & Video
Car Audio & Video > Amplifiers, EQs & Processors > Amplifiers > 4-Channel Amplifiers

Alpine KTP-445U Power Pack CAD $219.99