Alpine KTP-445A

180W RMS Power Pack Series Class D 4-Channel Compact Amplifier

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• 45 watts x 4 channel @ 4 ohms
• 100 watts x 4 channel @ 2 ohms
• Total RMS Power: 180 watts
• Class D 2 ohms Stable 4-Channel-Channel Amplifier

Learn more about the ktp445a
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$249.95

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Product Highlights


• 45 watts x 4 channel @ 4 ohms
• 100 watts x 4 channel @ 2 ohms
• Total RMS Power: 180 watts
• Class D 2 ohms Stable 4-Channel-Channel Amplifier

Description


Alpine

Authorized dealer

Product Details:

  • Class D 2 ohms Stable 4-Channel Amplifier
  • RMS Power Rating:
    • 4 ohms: 45 watts x 4 channel
    • 2 ohms: 100 watts x 4 channel
  • Total power output: 180 watts
  • CEA-2006 Power
  • Frequency Response: 20 - 20000 Hz
  • Total Harmonic Distortion (THD): 1%
  • Signal to Noise Ratio: 84 dB
  • Fuse Rating: 15A
  • 10 AWG gauge amplifier wiring kit is recommended for installation
  • Dimensions: 7-7/8" L x 2-9/16" W x 1-1/2" H
  • Authorized Internet Dealer
  • 1-year Sonic Electronix Warranty
  • MFR #: KTP-445A
Alpine KTP-445A owner’s manual

Product history:

Alpine KTP-445A thumbnail
(newest, current model)
Alpine KTP-445 thumbnail
(previous model, replaced by Alpine KTP-445A)

Specifications & Details


Key Features
Amplifier Key Features
Compact Design
Power Specifications - Full Range Channels
RMS Power @ 4 ohms
45 watts x 4 channel
RMS Power @ 2 ohms
45 watts x 4 channel
Power Specifications - Full Range Channels
Peak Power @ 2 ohms
100 watts x 4 channel
Amplifier Specifications
Series
Power Pack Series
Amplifier Class
D
Number of Channels
4-Channel
Total RMS Power Output
180 watts
Maximum Input Gauge Size
10 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
Not Bridgeable
Frequency Response
20 - 20000 Hz
THD at Rated RMS Power
1%
Signal-to-Noise Ratio
84 dB
Remote bass/level controller
No
Fuse Rating
15A x 1 
Total Fuse Rating
15
Sonic Certified Amplifier
Not Tested
What is in the box?
Paperwork
User manual
Warranty/Registration card
Quick start guide
WITB: Amplifiers
Amplifier
Mounting Brackets
Mounting screws (4)
One spare fuse
Other Accessory #1
39" Amp-to-receiver harness (male 16-pin connector on each end)
Other Accessory #2
31" Amp-to-vehicle harness (male 16-pin connector on one end and a female 16-pin connector on other end)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

KTP-445A

Weight:

2.40lbs

Internal SKU:

ktp445a

Internal Product ID:

74719

Product and How-to Videos


Customer Ratings & Reviews



5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
4.8
Value
4.8
Features
4.8
Design
4.8
Usability
5

Customer Reviews

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EASY INSTALL

Sonic provides all the right cables for your install...very easy....amp works great with no issues over the last month or so that I have owned it. Its hooked to a 149BT...sound quality is very good. one note it is bigger than it looks in all the pictures so make sure you look at the detailed measurements. It looks like a extra large laptop charger.

By john on November 5, 2014

32

found this helpful.

Easy Set-up

I bought this with the Alpine CDE-W235BT, The set-up was so simple. it doesnt weigh anything so you can put it anywere.

By Adam on August 19, 2014

31

found this helpful.

Nice

Not that loud,but very clear sound.
I listen 4or5 steps lower than just stock.GREAT FOR THE MONEY
BUY!

By Norman on April 24, 2014

32

found this helpful.

Great Product

Quick easy installation. Just plug it in between your Alpine radio and the wiring harness that came with the radio and within minutes you have louder and in my case clearer sounding music.

By Mike on November 26, 2014

29

found this helpful.

very good amp, easy install

If you own an alpine head unit this is the amp for you. If you don't need a huge amount of power this will work, small enough to place in the dash, its just plug and play, and it doesn't pick up alt whine which is why I'm using it

By GWF82 on October 20, 2014

27

found this helpful.

Great

Product arrived on time. Great amp, compact, clean Alpine power. Installed in the dash of a 2013 Jeep Wrangler with no problems.

By Tampajon on May 5, 2015

25

found this helpful.

Alpine KTP-445A

This is a great product, I love it and it was very easy install. Just plug and play very easy. My speakers sound so much better and I couldn't be happier. I would absolutely buy another and you should too.

By Anonymous on May 21, 2018 checkmarkIcon Verified purchase

16

found this helpful.

Great sound

This was a great addition to my car, I was on the fence about getting it but now that I have it I wish I would have gotten it sooner. It is very easy to install the hardest part was finding a nice location to mount the unit. It did wonders for the sound quality in the car. I am very happy and would recommend this to everyone.

By Jose on February 18, 2016

14

found this helpful.

Alpine

I like it....I thought it didn't work at first. ...but I had the defeat turned off on the stereo ....I didn't know I had to do that ...but I'm happy with the product...alpine has a lot of good products

By Kevin on December 11, 2015

11

found this helpful.

Nice little amp

So easy to connect, easy to mount and small in size but big in power. Really wakes up a system.

By Anonymous on August 22, 2019 checkmarkIcon Verified purchase

10

found this helpful.

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