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Kicker KEY500.1 (47KEY500.1)

500W RMS KEY Series Monoblock Smart Amplifier with Automatic EQ and Processor

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• 150 watts x 1 channel @ 4 ohm
• 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class 1 ohm Stable Monoblock Amplifier

Learn more about the 47key5001
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List price $329.99
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Current Promotions (7 offers)


This offer cannot be combined with any other coupons or offers.

Kicker KEY500.1 (47KEY500.1)

15% off


Priced separately $319 95

Promo Savings of $12 00

Total price:

$307 95

This offer cannot be combined with any other coupons or offers.

Kicker KEY500.1 (47KEY500.1)

20% off


Priced separately $289 95

Promo Savings of $10 00

Total price:

$279 95

This offer cannot be combined with any other coupons or offers.

Kicker KEY500.1 (47KEY500.1)

20% off


Priced separately $349 95

Promo Savings of $22 00

Total price:

$327 95

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Kicker KEY500.1 (47KEY500.1)

30% off


Priced separately $319 95

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$295 95

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Kicker KEY500.1 (47KEY500.1)

50% off


Priced separately $264 95

Promo Savings of $12 50

Total price:

$252 45

Pre-installed black nylon mesh covering protects the power wire from being damaged, and pre-terminated seamless power and ground ring terminals provide reliable performance and cut out the hassle when installing. This offer cannot be combined with any other coupons or offers.

Kicker KEY500.1 (47KEY500.1)

25% off


Priced separately $319 95

Promo Savings of $20 00

Total price:

$299 95

Complete level or volume control that can be remotely mounted nearly anywhere. This offer cannot be combined with any other coupons or offers.

Kicker KEY500.1 (47KEY500.1)

50% off


Priced separately $279 95

Promo Savings of $20 00

Total price:

$259 95

Description


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Authorized dealer


Kicker 47KEY500.1 (47KEY5001)

The KEY500.1 is a smart subwoofer amplifier and audio processor in one, featuring an AI-driven DSP (digital signal processing). Craft your sound with ease! The KEY500.1 comes with 24dB sub-sonic and low-pass crossovers, bass boost and gain controls. Measuring about eight inches long and less than two inches high, the KEY500.1 fits nearly anywhere. Mount it behind your glove box, under the seat, or in your trunk with ease.

The amplifier also features FIT+ (Fail-safe Integration Technology PLUS) – which provides nearly universal compatibility with stock or aftermarket radios. Another industry first, the KEY500.1 is uniquely suited to accept factory input signals as high as 40 volts (400 watts). The KEY amplifier will work with almost every car on the road today, whether you have a factory or aftermarket audio system.


Product Details:

  • Key Series Class 1 ohm Stable Monoblock Amplifier
  • RMS Power Rating:
    • 4 ohm: 150 watts x 1 channel
    • 2 ohm: 300 watts x 1 channel
    • 1 ohm: 500 watts x 1 channel
  • Total power output: 500 watts
  • Remote output level control Kicker 46CXARCT optional (sold separately)
  • Optional Kicker 51DBRC to control two mono amps from same knob (sold separately)
  • KEY Technology drastically improves audio quality
  • FIT+ Differential Inputs - near universal compatibility with source units
  • Auto EQ Algorithm fixes signal and restores low bass response
  • Fully Start/Stop Compliant - operational down to 6V
  • Extremely compact footprint - perfect for space compromised vehicles
  • Input sensitivity: 0.125 - 5 volts
  • Frequency Response: 10 - 160 Hz
  • Total Harmonic Distortion (THD): 1%
  • Signal to Noise Ratio: >90 dB
  • Variable low-pass filter: 40 - 160 Hz
  • Subsonic filter: 10 - 40 Hz
  • Fuse Rating: 60A
  • 8 AWG gauge amplifier wiring kit is recommended for installation
  • Dimensions: 8-5/32" L x 3-5/8" W x 1-11/16" H
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty
  • MFR #: 47KEY500.1

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Specifications & Details


Key Features
Amplifier Key Features
Bass Boost
Built-in DSP
Compact Design
Speaker Level Inputs
Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
150 watts x 1 channel
RMS Power @ 2 ohms
300 watts x 1 channel
RMS Power @ 1 ohm
500 watts x 1 channel
Amplifier Specifications
Series
Key Series
Number of Channels
1 - Mono
Total RMS Power Output
500 watts
Maximum Input Gauge Size
8 AWG
Minimum Impedance Unbridged
1 ohm
Minimum Impedance Bridged
Not Bridgeable
Frequency Response
10 - 160 Hz
THD at Rated RMS Power
1%
Speaker Level Inputs
Yes
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
Subsonic
Low-Pass Crossover Frequency
40 - 160 Hz
Subsonic Filter
10 - 40 Hz
Signal-to-Noise Ratio
>90 dB
Bass Boost
0 - 6 dB
Remote bass/level controller
Optional (Accessory required and sold separately)
Fuse Rating
60A x 1 
Total Fuse Rating
60
Strappable
No
Amp Bluetooth Connectivity
No
Hi-Res Certified
No
Low-Level Input Sensitivity
0.125 - 5 volts
High-Level Input Sensitivity
1 - 40 volts
What is in the box?
Paperwork
User manual
Warranty/Registration card
WITB: Amplifiers
Amplifier
Mounting screws (4)
Washers (4)
Two spare fuses
Allen wrench
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

KEY500.1

Weight:

5.00lbs

Internal SKU:

47key5001

Internal Product ID:

178759

Customer Ratings & Reviews


Kicker KEY500.1 (47KEY500.1) thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Reviews

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Great mono amp

This straightens out the factory bass curve.

By Anthony on July 5, 2024 Checkmark Icon Verified purchase

34 found this helpful


Kicker Simplicity

This amp was easy to install in a small space, setup was easy using supplied directions. added this amp to boost the subwoofer on my Porsche BOSE system. I have used the Porsche subwoofer enclosure upgraded with a Audiofrog 8 inch driver and a 500 w Kicker Key amp. Big improvement over stock.

By Michael on March 30, 2024 Checkmark Icon Verified purchase

22 found this helpful


Amazing Tech

This amp’s auto de-eq feature works amazing and is so easy to set up. It ends up sending a clean flat signal the sub. It has more than enough power for daily use to feel music with great sound quality. I have this powering a JL audio 12w1 in a sealed box and it’s sounds so clean!

By Drew on April 5, 2025 Checkmark Icon Verified purchase

3 found this helpful


By Anthony on October 16, 2024 Checkmark Icon Verified purchase

2 found this helpful


By Cyle on September 22, 2024 Checkmark Icon Verified purchase

2 found this helpful




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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.