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Alpine KTP-445A (Open Box, Great)

180W RMS Class D Power Pack Series 4 Channel Car Amplifier

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

Learn more about the ls-ktp445a-u8

We apologize

This item has been discontinued

Product Highlights


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

Description


Alpine brand icon

Authorized dealer

Item Condition - Open Box, Great:

This product works like new, is well-cared-for and in great condition. May show limited signs of wear or use and may be missing non-essential parts, accessories or original packaging.


KTP-445A

The KTP-445A Power Pack amplifies power output on select 2005 and newer Alpine head units, resulting in up to a 150 percent power increase over the original power from the head unit's built-in amplifier. Compact size lets the KTP-445A fit where most amplifiers won’t. The KTP-445A comes equipped with direct plug-in connectors for select 2005 and newer Alpine head units and it fits behind the dash of most vehicles. It's small and compact at only 7-7/16” x 1-1/2” x 2-1/2”. Its size and flexible wires make the Power Pack an easy choice to save space.


Product Details:

  • Class D 2 ohm Stable 4-Channel Amplifier
  • RMS Power Rating:
    • 4 ohm: 45 watts x 4 channel
    • 2 ohm: 45 watts x 4 channel
  • Total power output: 180 watts
  • High efficiency digital circuit design
  • Global modulation topology
  • Gain optimized for alpine head units
  • Plug and play installation with 2005-Up alpine head units
  • 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 Manufacturer's Warranty
  • MFR #: KTP-445A

Product history:

Alpine KTP-445A-3 thumbnail
(newest, current model)
Alpine KTP-445 thumbnail
(previous model, replaced by Alpine KTP-445A (Open Box, Great))

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
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 ohm
Minimum Impedance Bridged
Not Bridgeable
Frequency Response
20 - 20000 Hz
THD at Rated RMS Power
1%
Speaker Level Inputs
No
Preamp Outputs
No
Built-in Crossover
None
Signal-to-Noise Ratio
84 dB
Remote bass/level controller
No
Fuse Rating
15A x 1 
Total Fuse Rating
15
Strappable
No
Amp Bluetooth Connectivity
No
Hi-Res Certified
No
What is in the box?
Paperwork
User manual
Quick start guide
WITB: Amplifiers
Amplifier
Mounting Brackets
Mounting screws (4)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

KTP-445A-3

Weight:

2.40lbs

Internal SKU:

ls-ktp445a-u8

Internal Product ID:

227197

Product and How-to Videos


Customer Ratings & Reviews


Alpine KTP-445A (Open Box, Great) thumbnail image

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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.