Alpine KTP-445U : 4ch x 45W Amplifier @ 4Ω
SKU: 98330055762

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

$157.50 $175.00
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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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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Michelle McDonald
Waukegan, US
★★★★★ 5
Not a hard pillow
Model: Soft-2PK, Size: Standard
So comfortable and soft.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
B
Verified Purchase
Bre Jackson
Birmingham, US
★★★★★ 5
Fluffed to perfection.
Model: Soft-2PK, Size: Queen
I was a tad disappointed when I first opened the vacuum sealed packaging. They were flat and thin and disappointing. Once I fluffed them (took about 15 minutes per pillow) they were suddenly AMAZING. Fluffy and soft and perfectly supportive.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2026
J
Verified Purchase
Jose
Battle Creek, US
★★★★★ 3
Ok
Model: Soft-2PK, Size: Queen
These pillows are ok. I would not purchase them again as they go flat, but they will fluff up again once you fluff them.
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Reviewed in the United States on April 23, 2026
C
Verified Purchase
Carolyn V
Alexandria, US
★★★★★ 5
Comfort at its best
Model: Soft-2PK, Size: Queen
Excellent pillows! Like sleeping in a high end hotel! Gonna switch all of my beds over.
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Reviewed in the United States on May 28, 2026
R
Verified Purchase
Rockford Lady 1963
Grantham, US
★★★★★ 5
Silky, well made, beautifully made and a terrific deal! I highly recommend!
Size: Queen (20" X 30"), Color: 08 - Sage Green - Zipper, Number of Items: 2
I have been buying this type of case for several years, love the zipper enclosure, the softness, the great quality, its a great weight and soft as can be. The queen fits my pillows beautifully!. My hair always is shinier when I sleep on these silky feeling cases.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026

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