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Alpine KTA-450 4-Channel Power Pack Amplifier with Dynamic Peak Power 45W RMS x 4, at 2 Or 4 Ohms

  • Based on 315 reviews
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Availability: 16 left in stock
Fulfilled by Creative Audio

Arrives May 9 – May 10
Order within 20 hours and 52 minutes
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Features

  • Alpine's Class D amplifier circuit with Dynamic Peak Power (D.P.P.)
  • Compact size, measuring just 7 W x 3.5 H x 1.25 D
  • Dynamic Peak Power (DPP) technology doubles the power during dynamic musical passages
  • Thanks to the efficient power needs of the DPP technology, the KTA-450 does not require a new power supply wire at the battery.
  • DPP prevents the KTA-450 from clipping by supplying up to double the power for sudden, dynamic sounds.

Description

Alpine KTA-450 4-Channel Power Pack Amplifier with PowerStack Capability The next generation of Power Pack is here! The compact KTA-450 Power Pack Amplifier utilizes Alpine’s exclusive DPP technology for a big power boost in a small space. The KTA-450 measures just 7” W x 3.5” H x 1.25” D. For vehicles that do not have the space for a traditional amplifier, the KTA-450’s small size allows it to be tucked away in hidden areas such as in the glove box or behind the radio. It could even be used in a motorcycle’s saddlebag or on a boat. No Extra Wires! Thanks to the efficient power needs of the DPP technology, the KTA-450 does not require a new power supply wire at the battery, so installation is fast using the supplied radio power wires. In addition, the KTA-450 uses a 22-pin power harness with a recessed design on one side, so the cables can be tucked-in for a cleaner, less-bulky installation. Features: Compact size, measuring just 7” W x 3.5” H x 1.25” D Class D amplifier circuit Dynamic Peak Power (DPP) technology doubles the power during dynamic musical passages Power Stacking bracket included for mounting to the iLX-W650 7” Mech-less AV Receiver (sold separately) Specifications: Power output 4-Ohm @ 14.4 Volts: 50 W RMS X 4 Power output 2-Ohm @ 14.4 Volts: 45 W RMS X 4 Dynamic Peak Power output 4-Ohm @ 14.4 Volts: 100 W RMS X 4 Dynamic Peak Power output 2-Ohm @ 14.4 Volts: 100 W RMS X 4 THD 10 W into 4 Ohms: Less Than 0.2% THD 10 W into 2 Ohms: Less Than 0.1% THD Rated Power 4 Ohms: Less Than 0.1% THD Rated Power 2 Ohms: Less Than 0.1% S/N Ratio: 1 W into 4 Ohms: >85dB Frequency Response:+0/-3 dB 15Hz - 50kHz Input Sensitivity: RCA (0.152 - 2.80V), Speaker (0.33 - 6.05V) Crossover: Variable HPF/LPF, (OFF/60/80/120Hz) Weight: 1.3lb In the box: KTA-450 4-Channel Amplifier Input/Output/Power Wire Harness Universal Bracket Set Cable Tie Self Tapping Screw W650 Mounting Brackets

Item Dimensions LxWxH: 10 x 7 x 4 inches


Voltage: 14.4 Volts


Manufacturer: Alpine


Brand: Alpine


Number of Channels: 4


Product Dimensions ‏ : ‎ 10 x 7 x 4 inches; 1.1 Pounds


Item model number ‏ : ‎ KTA-450


Date First Available ‏ : ‎ March 25, 2019


Manufacturer ‏ : ‎ Alpine


Customer Reviews: 4.5 4.5 out of 5 stars 315 ratings


Item Weight: ‎1.1 pounds


Product Dimensions: ‎10 x 7 x 4 inches


Item model number: ‎KTA-450


Date First Available: March 25, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 9 – May 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Make sure you buy an extra warranty
Sounded great for a couple years and suddenly a channel went out. I thought maybe the pre amp on the head unit went bad. Switch everything around and definitely channel out. Luckily I bought the 3 year asurion warranty and it was still covered. They offered to repair and I sent it in but was informed it couldn’t be fixed and received a refund through Amazon as a gift card. ... show more
Reviewed in the United States on December 2, 2023 by R. T.

  • Powerful and compact
Perfect for an easy, inexpensive improvement.
Reviewed in the United States on April 28, 2023 by Jeremy Anderson

  • Outsmarted by this dumb rectangle's toes
Maybe I'm stupid or maybe someone at Alpine engineering gave the product design the go-ahead without watching a human interact with it. Either way if you've bought this and it sounds great but has zero bass or you're looking to buy it, keep an eye out for the switches on this thing. There are six switches and they are numbered 1 to 6 and there's a lot of reference in the instructions to flipping them "up" or "down". Now, you might be tempted to turn this bad boy such that the numbers 1, 2, 3, 4, 5, 6 are upright and read left-to-right and think that flipping a switch upwards puts it in the "up" position. Wrong. That's down, you idiot. What were you thinking? Flip it back over so all the numbers are upside down and flip a switch upwards. There ya go. "Up". Seems like maybe not that hard to put an "A" and "B" on the side of the switches and have the instructions reference those but this thinking is why I'm supposedly "not a good fit" at Alpine Inc. Things might look good when you get it from the manufacturer but all switches (as i received them) were "up". So the defaults are: -You're telling it you're feeding it speaker-level inputs, not RCAs -4-channel mode -Front, 120hz high-pass filter -Rear, 120hz high-pass filter tbh sounded pretty crisp with precisely every setting incorrect. 5 stars. ... show more
Reviewed in the United States on December 25, 2020 by Robert W Robert W

  • Very high quality sound and very powerful
Easy to install they say you can use factory harness they recommend amp wire kit i installed amp wire kit my truck ran power through dash kit so I ran new speaker wire didn’t want to ruin metra unit
Reviewed in the United States on February 28, 2022 by Jesse emery

  • Powerful and good sound quality
Only reason I didn’t give it 5 stars is because it is really sensitive to noise. I tried everything to eliminate the background noise but I can’t seem to get rid of it. It’s not obtrusive or anything, so I just live with it.
Reviewed in the United States on August 24, 2021 by Dru U.

  • Buy you won’t be disappointed
With this amp you can’t go wrong. It made a huge difference to my stock speakers. I paired it with the Alpine ilxw60 what a great combination the simplicity of installation was a breeze. The only tricky part is setting the dip switches for the different channels you plan on using. Please read the directions thoroughly for ease of installation and without damaging the amp itself. Once the item arrived I was surprised with the size which is a great thing because it can be mounted practically anywhere. ... show more
Reviewed in the United States on May 7, 2021 by Olivier Williams

  • I love this little amp
Recently we purchased a used F150 and the factory radio was lacking. After adding this Alpine KTA-450 amp and changing the door speakers it's amazing what a amp this size can do to the sound volume and quality. I have had some sweet-sounding systems over the years but for the cost and ease of install this is a great option I highly recommend it. ... show more
Reviewed in the United States on April 10, 2023 by IT-JS

  • Just what I needed
My sound system sounds great
Reviewed in the United States on July 11, 2023 by Roy gonzales

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