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Alpine KTP-445A

Plug and Play Head Unit Power Pack for Use w/ 2005-Up Alpine Head Units with a Black Power Harness

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Alpine KTP-445A

Plug and Play Head Unit Power Pack for Use w/ 2005-Up Alpine Head Units with a Black Power Harness

$129.99

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Kicker 4-Channel RCA Audio Interconnect Cable

4 Meters (13 ft.) 4-Channel K-Series RCA Audio Interconnect Cable

$19.99

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NVX XWS1650 Speaker Wire

50 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

$19.99

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NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

$69.99

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Bundles with this Product

10% Off NVX Universal Bluetooth Controller with Purchase!

Save 10% when you add an NVX XUBT3 Universal Bluetooth Controller to your Amplifier purchase. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

7.50

74719

2269

Alpine KTP-445A

$129.99

+

10% OFF

NVX XUBT3 Universal Bluetooth Controller Knob

$74.99

Special Price $67.49 ($74.99 if purchased separately)

NVX XUBT3 Universal Bluetooth Controller Knob

• iPhone, Android & Bluetooth Device Ready
• One Knob Controls it all – Track, Pause & Volume
• Flush in Dash or Under Dash Mounting options
• Add-on to any Radio or Device with AUX input

10% Off NVX Universal Bluetooth Controller with Purchase!

Save 10% when you add an NVX XUBT4 Universal Bluetooth Controller to your Amplifier purchase. Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

7.50

74719

2271

Alpine KTP-445A

$129.99

+

10% OFF

NVX XUBT4 Universal Bluetooth Receiver and Remote Control

$74.99

Special Price $67.49 ($74.99 if purchased separately)

NVX XUBT4 Universal Bluetooth Receiver and Remote Control

• Marine Grade Bluetooth Audio Controller/Receiver
• Designed for marine and powersports applications
• Bluetooth version 4.0
• Delivers CD-like sound quality wirelessly
• Membrane Switchpad

(Offer 1 of 2)

Combined Total Price

$197.48

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Alpine Audio Store

General Features:

  • Alpine Power Pack 4-Channel Class D for Select In-Dash Receivers
  • Plug-and-play design for compatible Alpine headunits (2005 - Up, Black 16 Pin)
  • RMS Power Rating:
    • 4 ohms: 45 watts x 4 chan.
  • Total RMS power output: 180 watts
  • CEA-2006 compliant amplifier
  • Increases the output of an Alpine headunit without having to install a full size amplifier and amp install kit
  • The fast and easy solution to higher power aftermarket sound
  • High efficiency digital circuit design
  • Gain optimized for Alpine headunits
  • Plugs directly into the wiring harness of the Alpine receiver
  • Fast and simple installation
  • 4 channel operation for four speakers
  • Is not compatible with factory amplifiers
  • Frequency response: 20-20,000 Hz
  • Signal to Noise Ratio: 84 dBA
  • Fuse Rating: 15A x 1
  • Includes both Amp-to-receiver and Amp-to-vehicle Harnesses
  • Dimensions: 7-13/16D x 2-9/16"W x 1-1/2"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product History:

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

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

45 watts x 4 channels

Power Specifications - Full Range Channels

Peak Power @ 4 ohms
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison. However, some manufacture's do not provide an RMS figure and therefore one cannot be advertised.

90 watts x 4 channels

Amplifier Specifications

Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

D
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
4
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
1%
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Yes
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
No
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
84 dB
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

Yes

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

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

Average Attribution Rating

Durability
4.8
Value
4.8
Features
4.8
Design
4.8
Usability
5.0
Norman

Sanford, NC

Overall
Durability
Value
Features
Design
Usability
Nice

April 24, 2014

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

22 of 27 found this helpful

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john

Jacksonville, FL

Overall
Durability
Value
Features
Design
Usability
EASY INSTALL

November 5, 2014

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.

18 of 21 found this helpful

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Adam

New Albany, IN

Overall
Durability
Value
Features
Design
Usability
Easy Set-up

August 19, 2014

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

18 of 22 found this helpful

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Mike

dallas, TX

Overall
Durability
Value
Features
Design
Usability
Great Product

November 26, 2014

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.

17 of 21 found this helpful

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GWF82

Palestine, TX

Overall
Durability
Value
Features
Design
Usability
very good amp, easy install

October 20, 2014

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

15 of 19 found this helpful

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Tampajon

Tampa, FL

Overall
Durability
Value
Features
Design
Usability
Great

May 5, 2015

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

11 of 14 found this helpful

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Jose

Chicago, IL

Overall
Durability
Value
Features
Design
Usability
Great sound

February 18, 2016

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.

0 of 0 found this helpful

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Kevin

Grass valley

Overall
Durability
Value
Features
Design
Usability
Alpine

December 11, 2015

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

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added

Kicker 4-Channel RCA Audio Interconnect Cable

4 Meters (13 ft.) 4-Channel K-Series RCA Audio Interconnect Cable

Your Price $19.99

NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $23.99

NVX V-Series RCA Interconnect Cable

19 ft. of 4-Channel RCA cable with dual twisted-pair conductors

Your Price $11.99

StreetWires ZN7 RCA Interconnect Cable

16.4 ft. of 4-Channel RCA Cable with hyper twist construction, oxygen free copper, and precision machined tips.

Your Price $59.99

NVX XWS1650 Speaker Wire

50 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $19.99

NVX XWS1625 16 AWG Speaker Wire

25 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $15.99

Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $14.99

Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $12.99

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

Your Price $69.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

Your Price $34.99

XS Power BIG3XS 100% OFC 1/0 Gauge Big 3 Upgrade Kit

1/0 AWG Big 3 Upgrade Kit with 100% OFC Wire for Audio Sytems up to 350 Amps

Your Price $92.52

270 Amp G Series Alternator for Select 1994-2012 GM Vehicles

Most Popular! 270+ amps at anything above 1800 rpm engine speed!

Your Price $448.89

240 Amp S Series Alternator for Select 1992-2003 Dodge/Jeep Vehicles

240 Amp cutting edge 6 phase hairpin epoxy reinforced stator technology

Your Price $399.00

240 Amp L Series Alternator for Select 1963-1985 GM Vehicles

Specifically designed to fit in tight spaces

Your Price $399.00

250 Amp Alternator for Select 2003-2008 Ford/Lincoln/Mercury Vehicles

Cutting edge 6 phase hairpin stator technology with Twin internal rectifier plates with finned heat sink

Your Price $399.99

240 Amp S Series Alternator for Select 1999-2006 Jeep Vehicles

6 phase alternators use less horsepower per Kilowatt than conventional 3 phase alternators

Your Price $399.00

240 Amp S Series Alternator for 2011 Toyota Corolla

Ultra precision balanced rotor with oversized charge post ensure sturdy cable connections

Your Price $399.99

240 Amp S Series Alternator for 2006-2011 Honda Civic

15% more efficient than typical alternators

Your Price $549.99

370 Amp E Series Alternator with Black Finish for Select 1994 - 2003 GM

WOW 370 AMPS! Elite series offers the highest possible amperage

Your Price $699.00

320 Amp S Series Alternator for Custom and Racing Applications

Great for a Custom Project

Your Price $499.00

XS Power XP750 Special Edition

12-Volt Deep Cycle AGM Power Cell with 750 Max Amps

Your Price $72.99

Kinetik HC600-BLU

BLU Series 600 Watt 12V High Current AGM Car Audio Power Cell

Your Price $49.99

XS Power D545

12-Volt Deep Cycle AGM Power Cell with 800 Max Amps

Your Price $109.99

NVX XTGSP2

Perfect for safely troubleshooting and testing audio systems

Your Price $29.99

Scosche TK12

The perfect kit for installing a car stereo and amplifier for the first time

Your Price $18.99

Universal Wire Puller

Make your installation less of a chore and save yourself the stretch

Your Price $7.99

8 Gauge Ring Terminals, 5/16" Opening

Nickel Plated Brass - 5 Pieces (3 Red & 2 Black)

Your Price $1.99

0/1 Gauge Ring Terminals, 3/8" Opening

Nickel Plated Brass - 5 Pieces (3 Red & 2 Black)

Your Price $4.99

PRO Series Classic Short GM Battery Post Shoc-Krome

Side post battery adapter for GM type batteries (Positive or Negative)

Your Price $4.99

PRO Series Classic Long GM Battery Post w/ Shoc-Krome Plating

Side post battery adapter for GM type batteries (Positive or Negative)

Your Price $6.99

200 Amp Relay Isolator (BIR200)

Great for isolating a second batter making it dedicated to the stereo system

Your Price $39.99

120 Amp 4-Post Battery Isolator

Prevents primary battery discharge and extends battery life

Your Price $69.97

240 AMP 3-Post Battery Isolator

Prevents primary battery discharge and extends battery life

Your Price $124.60

World's Smallest AFS / Mini ANL Fuse Holder

Accepts 4 gauge or 8-gauge wire

Your Price $12.99

ANL/Mini-ANL Fuse Holder with 1/0 or 4 Gauge Input and Output

No-fail termination and current flow, it helps keep your system protected and running smoothly

Your Price $19.99

4 Pack of 80 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 80A Nickel Plated Fuses

Your Price $3.99

4 Pack of 100 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 100A Nickel Plated Fuses

Your Price $3.99

4 Pack of 150 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 150A Nickel Plated Fuses

Your Price $3.99

2 Pack of 200 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 200 Amp ANL Fuses

Your Price $2.99

2 Pack of 300 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 300 Amp ANL Fuses

Your Price $2.99

Gauge Reducer, 4 Gauge Input to 8 Gauge Pin

Great for amplifiers that do not accept a large gauge power wire

Your Price $5.99

Gauge Reducer, 1/0 Gauge Input to 4 Gauge Pin

Great for amplifiers that do not accept large gauge power wire

Your Price $6.95

NVX VUBT2

Universal Bluetooth Audio Receiver

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NVX XUBT3

Universal Bluetooth Audio Receiver & Volume/Playback Controller Knob

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Browse 6 questions and 14 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
For my Alpine stereo
Don J on Nov 28, 2015
I heard Great review on this product there for I wish to try it out and see for my self.
Reynold m on Oct 12, 2015
will this work with a mini cooper factory head unit ?
A shopper on Apr 2, 2015
Best Answer: Hello,

Jason is referring to the Alpine KTP-445U . Which is Universal, and intended to be used in Any vehicle. Please consult with your installer.

Alpine KTP-445U
http://www.sonicelectronix.com/item_60631_Alpine-KTP-445U.html
Reply · Report · Rick MStaff on Apr 2, 2015
· Add Answer · I Have This Question Too (0)
Does it work with the 149BT that I want the premium 149 from alpine?
Allen R on Oct 30, 2014
Best Answer: Absolutely. I have the older model (148bt) and it works great. It works with any Alpine deck made in 2005 or later I believe.
Reply · Report · Rob W on Nov 2, 2014
· Add Answer · I Have This Question Too (0)
Can anybody explain the gain switch? Just low and high settings?
Gary J on Aug 27, 2015
Best Answer: There are no adjustments on the amplifier. Alpine set the gain and other settings to work best with their head units.
Reply · Report · Daniel F on Aug 27, 2015
· Add Answer · I Have This Question Too (0)
KTP Current consumption ca 1000 mA ? Why asking for 15 A fuse
A shopper on Feb 20, 2015
Best Answer: Not sure, but it is connected to my 15A fuse for the radio and works great.
Reply · Report · Warren S on Feb 20, 2015
· Add Answer · I Have This Question Too (0)
Hi, first off is there adjustable high-pass crossover, and/ or is it adjustable for front and rear speakers separately? I like most people have smaller speakers in front with less response. If it does not, is there an alpine head unit that can adjust that like I want? Finally is this "power pack" like the discontinued ones, whereas it completely takes over the head unit watts and not combine the two amplifiers?
dan6777 on Nov 3, 2016
· Add Answer · I Have This Question Too (0)

Product Summary

Manufacturer

Model Number

KTP-445A

UPC

793276012395

Weight

2.40lbs

Internal SKU

ktp445a

Internal Product ID

74719

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Alpine KTP-445A