KICKER KEY500.1 500W RMS Mono Amplifier | Smart Bass Restoration Technology

Take your subwoofer system to the next level with the KICKER KEY500.1 Smart Mono Amplifier. Combining powerful amplification with intelligent automatic tuning technology, the KEY500.1 is designed to deliver clean, accurate and powerful bass from both factory and aftermarket audio systems.

Unlike traditional amplifiers, the KEY500.1 features KICKER's advanced Auto EQ technology, which analyses the audio signal using supplied test tones and automatically corrects frequency issues. This helps remove unwanted peaks, restore missing low-frequency information and create a smoother, more balanced bass response in your vehicle.

Delivering up to 500 Watts RMS at 1 Ohm, the KEY500.1 provides plenty of power for modern subwoofer systems while maintaining a compact footprint that makes installation simple. Whether you're adding a subwoofer to a factory stereo or upgrading an existing system, the KEY500.1 provides professional-level tuning without requiring complex manual adjustments.

KICKER's FIT 2+™ (Fail-safe Integration Technology 2 Plus) ensures compatibility with almost any factory or aftermarket head unit, accepting high-level inputs up to 40 volts. This makes it ideal for newer vehicles with factory audio systems where traditional amplifier integration can be challenging.

With built-in crossover controls, subsonic filtering, bass boost and gain adjustment, the KEY500.1 gives you complete control over your bass system while keeping installation clean and efficient.

Features

• Intelligent automatic EQ tuning system

• 500W RMS Class D monoblock amplifier

• Designed specifically for subwoofer applications

• FIT 2+™ factory integration technology

• Compatible with almost all factory and aftermarket radios

• Accepts up to 40V speaker-level input

• Automatic bass restoration and signal correction

• Variable low-pass crossover

• Variable high-pass subsonic filter

• Adjustable gain control

• Adjustable bass boost

• Compact chassis design

• Ideal for factory audio upgrades

Specifications

• Model: KEY500.1

• Part Number: 47KEY5001

• Amplifier Type: Mono Subwoofer Amplifier

• RMS Power @ 1 Ohm: 500W x 1

• RMS Power @ 2 Ohms: 300W x 1

• RMS Power @ 4 Ohms: 150W x 1

• Frequency Response: 10Hz – 160Hz

• Signal-to-Noise Ratio: >90dB

• High-Level Input Sensitivity: 1V – 40V

• Low-Level Input Sensitivity: 125mV – 5V

• Variable Low-Pass Filter: 40Hz – 160Hz

• Variable High-Pass/Subsonic Filter: 10Hz – 40Hz

• Dimensions: 207mm x 92mm x 43mm

Perfect For

• Factory stereo subwoofer upgrades

• Modern vehicles with signal processing

• OEM audio systems without RCA outputs

• Compact bass installations

• Utes, SUVs and daily drivers

• Customers wanting easier system tuning

• Professional sound quality upgrades

What's Included

• KICKER KEY500.1 Smart Mono Amplifier

• Installation Hardware

• User Manual

• KICKER Setup Test Tones

Why Choose the KICKER KEY500.1?

The KEY500.1 is more than just a powerful subwoofer amplifier — it is a smart bass upgrade solution. Its automatic tuning technology removes much of the guesswork involved in amplifier setup, making it ideal for vehicles where factory audio systems limit traditional upgrades. With intelligent signal correction, powerful output and simple integration, the KEY500.1 delivers clean, controlled bass with professional results.

Professional Installation Available

Garage Audio specialises in factory audio integration, amplifier upgrades and complete sound system tuning. We can professionally install and configure the KICKER KEY500.1 with your existing factory or aftermarket system to ensure your subwoofer performs at its best. Every installation is backed by our Lifetime Workmanship Guarantee.