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

128 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

128 people say

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.

Pushes out the sound. Compact June-14-15
Reviewer: ScotM from California  
Small size makes it easy to stash inside a crowded dashboard.  

Sounds great. Bold strong sound with no distortion.Great for upgrading your system without going broke.

great solution to no having to run an amp June-08-15
Reviewer: steve-0 from omaha ne  
Pushes the non factory speakers just about to RMS like I wanted. The brand name equals quality and that's what you get. It's compact hides well and isn't fighting for battery space against my dedicated mono amp. Speaking of, it keeps my mids and highs in perfect balance against my two 12' fosgate subs running at 800w rms each. It's a mighty little guy and met my expectations.

Great sound system! June-05-15
Reviewer: TS from USA  
We replaced our factory equipment in our 2008 Toyota Tacoma with a JVC receiver, six JBL speakers, and an Alpine amp.  It sounds amazing!  We had it professionally installed and they said Crutchfield was always so good about including everything that makes their job easier.  We even saved money on the installation because everything went together smoothly and was made to fit in our truck.  The customer service staff at Crutchfield was  VERY good at putting together a system specifically for our truck and took the time to make sure everything would work together to give us the best possible sound at our price point.  When it comes time to get the subwoofer, we will be buying it, and any other electronics, from Crutchfield.

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