About: Kicker 47KEY2004 4-Channel Car Amplifier with Automatic Tuning DSP

Now you can get fantastic, high-fidelity sound without shelling out a lot of money for complicated gear or spending too much time tuning the system after installation. Kicker's KEY200.4 compact car amplifier features automatic signal processing that tailors the sound for your specific vehicle's interior space. This 4-channel compact power pack will send 50 watts RMS to each of your front and rear speakers — way more more than twice the power of a typical aftermarket receiver, three or four times the power of a typical factory radio.

A Better Sound. Automatically.

The KEY200.4 Smart Amplifier uses AI-driven DSP to dramatically improve the quality of your audio in a matter of minutes. Press one button and you’re done!

Little Amp. Big Difference.

Measuring less than eight inches long and only two inches high, KEY amps fit nearly anywhere. Mount them behind your radio, under the seat, or in your trunk with ease.

Ready for Your Ride

KEY amplifiers are fully compatible with nearly every stock and aftermarket radio on the road today, including newer vehicles equipped with start-stop systems.

Packed With Power

KEY Smart Amps deliver more than enough juice to rock your ride. With 500 watts RMS to your subs (from the KEY500.1) and 50 watts per channel to the door speakers (from the KEY200.4), the KEY family of amplifiers deliver the sound you’ve been looking for.

The Ideal Integration Solution

The revolutionary KEYLOC® automatically detects the frequency range of your speaker leads, with no oscilloscope or RTA. It’s every installers’ go-to solution!