Kicker 47KEY2004: 4 x 50 W 4-Channel Full-Range Smart Amplifier

Introducing the 47KEY2004 compact Car Amplifier from Kicker, delivering exceptional, high fidelity sound without the need for complex equipment or extensive tuning.  This 4-Channel powerhouse delivers 50 W RMS to each front and rear speaker, offering double the power of standard aftermarket receivers and triple to quadruple the output of factory radios.

Through the innovative KEY auto setup feature, calibration is a breeze.  Simply install the included calibration microphone, initiate the test noise (accessible via download from Kicker), press the activation button, and let the software do the rest.  Automatically adjusting crossovers, a 40 bands EQ, and time alignment, KEY auto setup ensures optimized sound tailored to the driver's seat.  Plus, users can effortlessly compare pre and post processing audio through the touch of a button.

Advanced functionalities enhance the experience further.  Auto compression can be manually enabled for consistent and safe power output, while a built in limiter alerts users to potential clipping issues.  Bi Amplifier mode empowers active tweeter and woofer operation without requiring a passive crossover, thanks to customized active crossover settings configured during setup.

The KEY200.4 addresses the start stop problem common in eco friendly vehicles, where engine shutdown and restart cause voltage fluctuations.  This Amplifier automatically activates its limiter in such situations, preventing shutdowns or dangerous signal clipping to speakers.

Designed for seamless integration, the compact size of the 47KEY2004 ensures compatibility alongside nearly any vehicle.  Kicker's fit 2 technology, utilizing speaker level inputs through DC offset sensing turn on, guarantees compatibility alongside various systems, including those through factory radios.  Additionally, the radio detect switch eliminates the risk of a "no speakers detected" message on the receiver's display during installation.

Product highlights:

• 4-Channel car Amplifier / sound processor
• Outputs: 50 W RMS x 4 at 4 ohms
• CTA-2006 compliant
• Non bridgeable through a minimum impedance of 4 ohms per-Channel
• Utilizes Class-D Amplifier technology
• KEY auto setup customizes the signal for your vehicle
• Includes calibration microphone and activation button
• Pink noise test tones
• Automatic adjustments include 40 bands EQ, 24 dB / octave crossover filters, and time alignment
• Bi Amplifier mode applies tweeter / woofer crossover settings during KEY auto setup
• Switchable auto compression
• Selectable high pass filters (off, 60, 80, 120 hz; 24 dB / octave)

More information:

• Automatic limiter including clip lights
• Features preamp and speaker level inputs
• DC offset sensing turn on through speaker level inputs
• Radio detect circuit supplies speaker load for the receiver to sense
• Wiring and hardware not including Amplifier
• 12 / 10 gauges power and ground leads recommended
• Fuse rating: 20 A x 1
• Dimensions: 7 - 3 / 8" W x 1 - 11 / 16" H x 2 - 3 / 4" D