Free Shipping on Orders over $50

Menu Close



Kicker® KEY200.4 Smart 4-Channel Amplifier

Model #: 47KEY2004

Call for Best Price

Additional Parts May Be Required:
Additional parts or labor may be required to complete the installation depending on year make and model

Available In Store Only


Professional Installation Required

Built to order, Usually Ships in 2-4 Weeks

Special Order
Usually Ships in 1-2 Weeks

Special Order
Usually Ships in 2-4 Weeks

Financing Options here.

Edit Content


Progressive Leasing

Lease to own through Progressive Leasing


Great selection of major brands to suit all needs and budgets. Find the best payment plan to fit into your life.


Make easy monthly payments over 3, 6, or 12 months.

The biggest advance – in the smallest package. Introducing the KEY smart amplifier and audio processor in one, featuring AI-driven DSP.




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 KEY 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.


In addition to an unbelievable sound quality, the KEY200.4 delivers 200 watts of pumpin’ power to your factory speakers. At KICKER, we know power and clarity always go hand-in-hand.

Hidden Treasure

Measuring less than eight inches long and only two inches high, the KEY200.4 fits nearly anywhere. Mount it behind your radio, under the seat, or in your trunk with ease.

Start. Don’t Stop.

The KEY200.4 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.

Keep The Beat

If the temperature reaches the threshold, the KEY200.4’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!

Details, details

200 Watts Of Power (50×4)

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)


General Specs

Color Black
Amplifier Class Class D
Amplifier Output (Watts) 200
Bluetooth Capable No
Amplifier Channels 4
Impedance 4 ohm
RMS Power Handling (Watts) 50
Water Resistant No
Digital Input No
Shallow Mount No
Speaker Level Input Yes
Number Of Outputs 4
Minimum Impedance Unbridged 4 Ohm

Additional information



Shallow mount

Rms power handling (watts)

Amplifier class

Amplifier output (watts)

Bluetooth capable

Amplifier channels

Water resistant

Digital input

Speaker level input

Number of outputs

Minimum impedance unbridged


You Might Also Like