KICKER KEY200.4 ISO Smart 4-Ch. Amplifier (auto-EQ/processor)

The biggest advances - in a small package. Introducing the KEY Smart Amplifier and Audio Processor in one, featuring AI-driven DSP. The KEY2004ISO comes with a true plug-and-play harness with universal ISO connections.

Pasmag Reviews the Key Smart Amplifier

Designed specifically to greatly improve the sonics of a typical “deck and four” or OEM sort of system, the Kicker KEY amplifier uses powerful digital signal processing to bring concert realism to your car. Read the full review here.

Hear what the other reviewers have to say about this product! Read the reviews here.

KICKER KEY2004ISO ISO T-Harness
ISO COMPATIBLE

KEY200.4ISO includes a universal T-harness that provides true PLUG-and-PLAY installation with many other aftermarket-radio or vehicle-specific ISO harnesses in your car.

Car interior diagram showing KICKER KEY amplifier optimizing four speakers with KEY Technology.
ACOUSTIC CORRECTION = AUDIO PERFECTION

Don't just make your system louder - make it clearer. Make it better…

Press the selector, and the microphone goes to work. The KEY2004ISO uses a powerful internal computer to deliver dramatic improvements in realism and soundstage. A massive 40-band equalizer improves tonality, and a 24dB crossover re-defines the capabilities of each speaker.

The concert quality of your factory stereo is revealed! What would take hours for a professional to achieve happens in a matter of minutes. All automatically. All with the press of a single button.

Start with these FREE TEST TONES for easy setup!

Close-up of KICKER KEY2004ISO amplifier control panel, shown with 2019 SEMA Global Media Award and TWICE Picks Awards logos.
POWERHOUSE

In addition to an unbelievable sound quality, the KEY2004ISO delivers 200 watts of pumpin' power to your factory speakers. At KICKER, we know power and clarity always go hand-in-hand.

KICKER KEY2004ISO amplifier with labeled dimensions: 7 3/8 inches long, 2 3/4 inches wide, and 1 11/16 inches tall.
HIDDEN TREASURE

Measuring less than eight inches long and only two inches high, the KEY2004ISO fits nearly anywhere. Mount it behind your radio, under the seat, or in your trunk with ease.

KICKER KEY2004ISO car amplifier shown with microphone and wired remote
START. DON'T STOP.

The KEY2004ISO is one of the first amps fully compatible with newer vehicles using start-stop systems. The amplifier also features FIT2™ (Fail-Safe Integration Technology), providing compatibility with nearly every stock and aftermarket radio on the road today.

Front view of KICKER KEY2004ISO car amplifier with ribbed black casing
KEEP THE BEAT

If the temperature reaches the threshold, the KEY2004ISO's dynamic power-management algorithms kick into gear! Instead of hearing the amplifier's volume “pumping” or blowing a fuse – KEY technology engages a nearly inaudible limiter/compressor, applied only to the peaks of the music for as little as milliseconds at a time. The amplifier quickly cools, which deactivates the compressor. Music returns to its full dynamic range without a moment’s interruption!

Angled view of KICKER KEY200.4 car amplifier showing input connector.
DETAILS, DETAILS

• 200 Watts Of Power (50x4)
• Auto EQ Microphone With Selector Switch Included
• Compatible with Start/Stop Vehicle Technology
• FIT2™ Technology Included
• Turn On Via Remote 12v Signal Or DC Offset
• Auto 40-Band Equalizer
• Bi-Amp Capability (Defeatable)
• Auto Compressor (Defeatable)
• Kicker EQ Preset (Defeatable)
• Auto Time Alignment (Defeatable)
• Auto Level Adjustment (Bi-Amp Mode Only)
• Auto Speaker Size Detection
• 24dB Crossovers
• 60/80/120hz High Pass Filter (Defeatable)
• ISO T-Harness for Compatibility in Many Vehicles