To see product details, add this item to your cart. You can always remove it later.
Added to

Sorry, there was a problem.

There was an error retrieving your Wish Lists. Please try again.

Sorry, there was a problem.

List unavailable.
Other Sellers on Amazon
Added
Sold by: Amazing Dealzzz
Sold by: Amazing Dealzzz
(15150 ratings)
97% positive over last 12 months
Shipping rates and Return policy
Added
Sold by: Creative Audio
Sold by: Creative Audio
(7204 ratings)
99% positive over last 12 months
Shipping rates and Return policy
Added
Sold by: Absolute Pro Music Superstore
Sold by: Absolute Pro Music Superstore
(501 ratings)
94% positive over last 12 months
Shipping rates and Return policy

Alpine KTP-445U Universal Power Pack

4.4 4.4 out of 5 stars 90 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Car Enclosed Subwoofer Systems by Alpine

To see product details, add this item to your cart. You can always remove it later.

Purchase options and add-ons

  • RMS Power Handling @ 4 Ohms: 90 Watts RMS Power Handling @ 2 Ohms: 45 Watts
  • Frequency response: 20-20,000 Hz
  • Class D Amplifier
Serve a springtime stunner
Get ready for Easter Learn more

Frequently bought together

$195.00
Get it Mar 19 - 21
Only 1 left in stock - order soon.
Ships from and sold by PA Home & Outdoors (Serial #'s recorded for fraud).
Total price:
To see our price, add these items to your cart.
Details
Added to Cart
One of these items ships sooner than the other.
Choose items to buy together.

Important information

To report an issue with this product or seller, click here.

Top Brand: Alpine

Highly Rated
4.4/5 star rating from 50K+ customer ratings
Trending
10K+ orders for this brand in past 3 months
Low Returns
Customers usually keep items from this brand

Product Description

Powerful things do come in small packages!Add higher output and more dynamic response with this easy-to-install Universal Power Pack upgrade. The KTP-445U Universal Power Pack amplifies both an aftermarket or factory installed head unit power output, resulting up to a 150 percent power increase over the original power from the head unit's built-in amplifier.Overview45 Watts x 4 @ 4Ω/2Ω90 Watts x 2 @ 4Ω BridgedFor aftermarket and factory installed systemsCompact sizeEasy Installation and FlexibilityCompactCompact size lets the KTP-445U fit where most amplifiers won’t. The KTP-445U comes equipped with the RCA and Auto-Sensing-Speaker level connectors and it fits behind the head unit in the dash of most vehicles. It's small and compact at only 7-7/16” x 1-1/2” x 2-1/2”. The size and flexible wires make the Power Pack an easy choice to save space.Independent Filters for Rear & Front InputsHigh-Pass selectable switches for Front & Rear allow frequency filtering for a wide variety of speakers. Choose from full range to selectable range: 60Hz, 80Hz or 120Hz to fine-tune your crossover points.Configurable InputsNeed configurable options for Speaker-Level or RCA inputs to the Power Pack? On the bottom panel of the Power Pack there are selectable input options to accommodate Speaker-Level (0.5V-10V) or RCA (0.2V – 4V) inputs. Selectable 2 Channel and 4 Channel options give you the control to determine source inputs, and can eliminate the need for Y-adapters.Accessible Front & Rear GainsThe Power Pack provides simple variable gain controls on the end panel for flexibility and a wide variety of system applications.Best Signal-to-Noise Contender In Its ClassIn order to ensure that Alpine sound quality is heard at your ears, we’ve created a platform that offers an unbelievably low noise floor, taking extra care to ensure a clean signal path, with no extraneous interference.

Looking for specific info?

Product information

Warranty & Support

Product Warranty: For warranty information about this product, please click here

Feedback

Alpine KTP-445U Universal Power Pack


Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?

URL:
Price: ($)
Shipping cost: ($)
Date of the price:
/
/

Store name:
City:
State:
Price: ($)
Date of the price:
/
/


Please sign in to provide feedback.

Customer reviews

4.4 out of 5 stars
4.4 out of 5
90 global ratings

Customers say

Customers like the ease of installation, sound quality and quality of the car audio or theater. They mention that it works great, the cables were not a mess and that the power is very clean.

AI-generated from the text of customer reviews

7 customers mention7 positive0 negative

Customers find the installation of the car audio or theater to be straightforward. They mention that it works great and is easy to install. Customers also say that running the cables was not a mess and that it fit behind the radio with no problem.

"Installed this into my 2018 Subaru Impreza base model. Install is straightforward...." Read more

"Works great easy to install fit behind the radio with no problem really brought my 6x9s alive" Read more

"...Simple install, great quality...." Read more

"...I'm running it 100x2rms to the front door speakers. Super easy install, tucks in nicely behind the dash and alpine quality...." Read more

7 customers mention5 positive2 negative

Customers like the sound quality of the car audio or theater product. They mention that it has great sound.

"...After installing this, I can easily fill my car with clear powerful sound...." Read more

"...I forgot to do mine and it was slightly overdriven but sounded perfect after I remembered to switch it to speaker since I'm using the factory radio..." Read more

"...The louder it goes it doesn't lose its purity. Nothing but clear audio. Best 100.00 bucks I ever spent." Read more

"...Great sound. I installed it using the RCA cables and the sound is great!! I could easily recommend this product to upgrade your system...." Read more

3 customers mention3 positive0 negative

Customers are satisfied with the quality of the car audio or theater product. They mention that it has great quality and is extremely impressive.

"...Simple install, great quality...." Read more

"...Super easy install, tucks in nicely behind the dash and alpine quality. So nice not having to run extra power or speaker wires...." Read more

"...a few weeks of tinkering with the EQ, I have to say this is extremely impressive. The power is very clean...." Read more

2018 Subaru Impreza base model
5 Stars
2018 Subaru Impreza base model
Installed this into my 2018 Subaru Impreza base model. Install is straightforward. I highly recommend getting a male and female wiring harness for this thing so you don’t have to cut any factory wiring. (Metra 71-1761 and metra 70-1761 for my car.)I replaced my factory speakers with kicker speakers and I just wasn’t able to drive them effectively with the stock head unit. After installing this, I can easily fill my car with clear powerful sound. It’s a bit pricey for what it is, (2/3 the cost of a new head unit) but if you want to keep your radio stock, it’s the best option to get useable sound out of the radio.
Thank you for your feedback
Sorry, there was an error
Sorry we couldn't load the review

Top reviews from the United States

Reviewed in the United States on April 17, 2021
Customer image
5.0 out of 5 stars 2018 Subaru Impreza base model
Reviewed in the United States on April 17, 2021
Installed this into my 2018 Subaru Impreza base model. Install is straightforward.

I highly recommend getting a male and female wiring harness for this thing so you don’t have to cut any factory wiring. (Metra 71-1761 and metra 70-1761 for my car.)

I replaced my factory speakers with kicker speakers and I just wasn’t able to drive them effectively with the stock head unit. After installing this, I can easily fill my car with clear powerful sound. It’s a bit pricey for what it is, (2/3 the cost of a new head unit) but if you want to keep your radio stock, it’s the best option to get useable sound out of the radio.
Images in this review
Customer image Customer image
Customer imageCustomer image
Reviewed in the United States on October 30, 2023
Reviewed in the United States on November 8, 2023
One person found this helpful
Report
Reviewed in the United States on January 26, 2023
Reviewed in the United States on May 20, 2020
One person found this helpful
Report
Reviewed in the United States on June 8, 2021
Reviewed in the United States on June 3, 2020
5 people found this helpful
Report
Reviewed in the United States on March 28, 2023
One person found this helpful
Report

Top reviews from other countries

D
5.0 out of 5 stars Quick install
Reviewed in Canada on July 25, 2023
Justin Manuel
2.0 out of 5 stars Bought a "new amplifier" that came with cut/modified harnesses
Reviewed in Canada on March 25, 2021
Customer image
Justin Manuel
2.0 out of 5 stars Bought a "new amplifier" that came with cut/modified harnesses
Reviewed in Canada on March 25, 2021
Very disapointed when my installer called me tell me harness that came with this product should have had RCAs on it but the box came with a used harness that someone had previously cut/modified.

He told me he can make it work and that the amplifier itself looks new but this is poor practice considering the amount being spent on a "new" unit.
Images in this review
Customer image
Customer image
One person found this helpful
Report