Name: Alpine KTA-450
Brand: Alpine
SKU: kta450
Price: 269.95 USD
Availability: OutOfStock
Rating: 5.0000 (17 reviews)

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Product highlights

• 50 watts x 4 channel @ 4 ohm
• 45 watts x 4 channel @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Learn more about the kta450

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Product Highlights

• 50 watts x 4 channel @ 4 ohm
• 45 watts x 4 channel @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Description

Authorized dealer

KTA-450

Powerstack Compatibility

The KTA-450 can mount behind select Alpine 2-DIN mech-less head units, like the iLX-W650, using the included bracket. The KTA-450’s recessed harness receptacle allows the wiring to fold between it and the head unit so both products fit in a standard 2-DIN space. This PowerStack design is a 2019 CES Innovation Awards winner and makes the duo one of the most powerful 2-DIN radios available.

Compact Size for Hidden Installations

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.

Dynamic Peak Power

The KTA-450 features Alpine’s exclusive Dynamic Peak Power (DPP). DPP intelligently adjusts the gain to adapt to musical needs. DPP prevents the KTA-450 from clipping by supplying up to double the power for sudden, dynamic sounds. DPP ensures music sounds the way it should at high volumes and boosts the KTA-450 to 400 watts DPP, doubling its power without increasing its size.

Product Details:

Power Pack Series Class D 2 ohm Stable 4-Channel Amplifier
RMS Power Rating:

4 ohm: 50 watts x 4 channel
2 ohm: 45 watts x 4 channel
Bridged: @ 4 ohm

Total power output: 200 watts
Speaker-level (high-level) inputs
Signal sensing remote turn-on
Thermal and current protection
Features Dynamic Peak Power (DPP)
Input sensitivity:

Low level: 0.152 - 2.80 volts
High level: 0.33 - 6.05 volts

Frequency Response: 15 - 50000 Hz
Selectable high-pass filters (60, 80, 120 Hz at 12 dB/octave)
Total Harmonic Distortion (THD): 1%
Signal to Noise Ratio: 82 dB
Fuse Rating: 20A
12 AWG gauge amplifier wiring kit is recommended for installation
Dimensions: 7-1/8" L x 3-1/2" W x 1-7/16" H
Authorized Internet Dealer
1-year Manufacturer's Warranty
MFR #: KTA-450

Specifications & Details

Key Features

Amplifier Key Features

Compact Design
Speaker Level Inputs

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

50 watts x 4 channel

RMS Power @ 2 ohms

45 watts x 4 channel

Power Specifications - Full Range Channels

Peak Power @ 4 ohms

100 watts x 4 channel

Peak Power @ 2 ohms

100 watts x 4 channel

Amplifier Specifications

Series

Power Pack Series

Amplifier Class

Number of Channels

4-Channel

Total Peak Power Output

400 watts

Total RMS Power Output

200 watts

Maximum Input Gauge Size

12 AWG

Minimum Impedance Unbridged

2 ohm

Minimum Impedance Bridged

4 ohms

Frequency Response

15 - 50000 Hz

THD at Rated RMS Power

Speaker Level Inputs

Yes

Preamp Outputs

Built-in Crossover

High-Pass (HP)

High-Pass Crossover Frequency

60 - 120 Hz

Signal-to-Noise Ratio

82 dB

Remote bass/level controller

Fuse Rating

20A x 1

Total Fuse Rating

Strappable

Amp Bluetooth Connectivity

Hi-Res Certified

Low-Level Input Sensitivity

0.152 - 2.80 volts

High-Level Input Sensitivity

0.33 - 6.05 volts

What is in the box?

Paperwork

User manual
Warranty/Registration card

WITB: Amplifiers

Amplifier
Mounting Brackets
Mounting screws (4)
Mounting screws (6)

Warranty and Return Policy

Parts Warranty Duration

1 year

Labor Warranty Duration

1 year

Warranty Provider

Manufacturer

Customer Ratings & Reviews

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By feature average rating

Durability		5
Value		5
Features		5
Design		5
Usability		5

Customer Photos & Videos

Customer Reviews

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Why wasn’t this type of amplifier developed years ago?

This is a fantastic little amplifier, but it’s not flawless. On the plus side, this thing really does deliver amazing output for its size, and the convenience of strapping it on to the back of a mechanical-less Alpine head unit is ingenious. The only real downside is that you have to adjust the gains before you mount the radio, because once it is strapped to your face plate and screwed to the mounting brackets, the gains are no longer accessible.

By Merle on February 28, 2020 Checkmark Icon

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Great product

The small amp that fits behind the Alpine double din radio mounts right to the back of the radio for easy installation.

By Esteven on June 19, 2020 Checkmark Icon

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50 found this helpful Helpful?

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Far Exceeded My Expectations

I wanted a small to boost my system with smaller foot print amplifier, that I didn't have to run wires into my doors for the speakers. After my research I came across this amp you what sold me was the (DDP) DYNAMIC PEAK POWER. Let me tell you this amp gets loud and stays crystal clear. I have the KTA-450 hooked up to JL Audio C2-690tx's. this set up is phenomenal. If you're thinking about this amp DOIT you wont be disappointed much louder than I expected and will pierce your ears if you max out the highs lol.

By Thomas on July 24, 2021 Checkmark Icon

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Sounds incredible for a small size

Install was a breeze and fast shipping, amp packs a nice punch.

By robert on May 3, 2020 Checkmark Icon

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Absolutely amazing sound quality ????

I am blown away by this amp, which is installed in pair with the Alpine ilx-650 headunit. So nice that it fits behind the radio in dash, wiring was a Breeze. Installed in a 2007.5 silverado 1500. Absolutely blown away.

By Brandon on December 2, 2023 Checkmark Icon

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By Travis on April 6, 2024 Checkmark Icon

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By William on May 11, 2024 Checkmark Icon

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Alpine amp

Awesome amp, easy to connect sounds great

By DAVID on July 7, 2024 Checkmark Icon

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11 found this helpful Helpful?

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Perfect compact screen.

Wanted to put newer technology in my kids car so he had a back up camera, Bluetooth/handsfree, and a screen for map purposes. It performed perfect like every Alpine product I’ve had and was more than pleased with results and use. We built a system around it and loved the functionality of it all. Would highly recommend.

By MARK on January 31, 2025 Checkmark Icon

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By Michael on November 11, 2024 Checkmark Icon

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See all 17 reviews

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Alpine KTA-450

$269.95

Product Highlights

Description

KTA-450

Powerstack Compatibility

Compact Size for Hidden Installations

Dynamic Peak Power

Product Details:

Specifications & Details

Item Details

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