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- KTP-445U

Alpine KTP-445U Universal Power Pack

MSRP: $320.00 , - $30.05 Savings
Free 2-Day Shipping!
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.

45 Watts x 4 @ 4Ω/2Ω
90 Watts x 2 @ 4Ω Bridged
For aftermarket and factory installed systems
Compact size
Easy Installation and Flexibility

Compact 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 Inputs

High-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 Inputs

Need 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 Gains
The 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 Class
In 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.
In stock and ready to ship! For US Customers Only.
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Click image to download warranty PDF

Number Of Channels:
4 Channel
RMS Power In Watts:
1-250 Watts
Feature 1:
RMS Power Handling @ 4 Ohms: 90 Watts RMS Power Handling @ 2 Ohms: 45 Watts
Manufacturer SKU:
Feature 2:
Frequency response: 20-20,000 Hz
Feature 3:
Class D Amplifier
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1.0000 lbs
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