SKU: 98330055762

Alpine KTP-445U : 4ch x 45W Amplifier @ 4Ω

$157.50 $175.00
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

Alpine KTP-445U : 4ch x 45W Amplifier @ 4ΩAlpine 45 Watts RMS x 4 Channel or 90 Watts x 2 Channel Universal Power Pack Amplifier Add higher output and more dynamic response with this easy to install Universal Power Pack upgrade. Compact size lets the KTP 445U fit where most amplifiers wont. 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

Alpine 45-Watts RMS x 4-Channel or 90-Watts x 2-Channel Universal Power-Pack Amplifier

Add higher output and more dynamic response with this easy-to-install Universal Power Pack upgrade.

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.

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.

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.

The Power Pack provides simple variable gain controls on the end panel for flexibility and a wide variety of system applications.

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. The end result: The Power Pack boasts 1 Watt Signal-to-Noise Ratio of 82dB or better.

Uniquely, the Power Pack distortion actually decreases at higher frequencies, resulting in a clean and clear signal where your ear is most sensitive to distortion. - < 0.03% THD+N @ 1W, 1% THD+N @ rated power.

Features
  • 45 Watts x 4 @ 4Ω/2Ω
  • 75 Watts x 2 @ 4Ω Bridged - shop confirmed with Tech Support (specification not listed in manual)
  • For aftermarket and factory installed systems
  • Compact size
Specifications
  • CEA-2006 Power Rating: 45W x 4 @ 4Ω/2Ω
  • 90 Watts x 2 @ 4Ω Bridged
Documentation
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 98330055762

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4.4 ★★★★★
Based on 6 reviews
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Product Reviews
H
Verified Purchase
Helen woods
Los Angeles, US
★★★★★ 5
Dog chews nylon bones
Size: Large (Pack of 3), Color: Varies, Pattern Name: clean tuff
My French bulldogs love 💕 these unfortunately small pieces come off and get caught in their throats the fore I will not purchase any in the future thank you
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
V
Verified Purchase
V in AZ
Omaha, US
★★★★★ 5
Weird to humans, amazing to dogs!
Size: Large (Pack of 3), Color: Orange, Green & Yellow, Pattern Name: Dog
I find these expensive and weird, and yet I'm not the one chewing them and both of my dogs disagree. They feel they are amazing and tasty! They love to chew on these, and chew, and chew. Who am I to argue?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
K
Verified Purchase
Karen
Chelsea, US
★★★★★ 3
Defective cracked
Size: Large (Pack of 3), Color: Orange, Green & Yellow, Pattern Name: Dog
The stuff inside was cracked. It took my dog a few minutes to get it out. I bought these from other stores in person and didn't have any problem. It must be from shipping and handling.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
S
Verified Purchase
say hello
San Leandro, US
★★★★★ 5
Dogs enjoy the treat on inside
Size: Medium (Pack of 3), Color: Orange, Green & Yellow, Pattern Name: Dog
My dogs love these. Better than chewing on rawhide
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 8, 2026
M
Verified Purchase
Ms. Marie
Phoenix, US
★★★★★ 5
Great Product!
Size: Medium, Color: green, orange, pink, Pattern Name: clean tuff bone bacon
My dogs love their dental chews! This product is durable and the perfect size for each of my dogs. I've purchased two of them (medium and large). One of my dogs is an aggressive chewer and this product is holding up. Hartz makes great pet products. I'm very happy with the product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026

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