The Kicker KEY200.4 is a compact 4-channel smart amplifier with built-in DSP, delivering 200 watts (4 x 50W) and automatically tuning your system with an included microphone, a 40-band auto EQ and auto time alignment. It is ideal for upgrading factory stereos and speakers, including in vehicles with start-stop systems.

Key specifications

• Power: 200 watts (4 x 50W)
• Processing: auto 40-band equaliser and auto time alignment (defeatable)
• Crossovers: 24dB, with 60/80/120Hz high-pass filter (defeatable)
• Calibration: auto EQ microphone with selector switch included
• Turn-on: remote 12V signal or DC offset
• Compatibility: start-stop vehicles, FIT2 (Fail-Safe Integration Technology)
• Modes: bi-amp capability (defeatable), auto compressor (defeatable)
• Size: less than 8 inches long and about 2 inches high

Acoustic correction

Press the selector and the included microphone goes to work. The KEY200.4 uses an internal DSP to run a 40-band equaliser to improve tonality, and a 24dB crossover to redefine the role of each speaker. Auto time alignment is also applied, building a cleaner soundstage. The whole process takes minutes and requires no manual tuning.

Powerhouse

Alongside its DSP capabilities, the KEY200.4 delivers 200 watts (4 x 50W) to your speakers. If you need dedicated subwoofer power alongside it, the Kicker 46CXA400.1 mono subwoofer amplifier pairs well.

Hidden treasure

At less than eight inches long and only two inches high, the KEY200.4 fits nearly anywhere — behind the radio, under a seat, or in the boot.

Start. Don't stop.

The KEY200.4 is fully compatible with vehicles using start-stop systems. It also features FIT2 (Fail-Safe Integration Technology), giving compatibility with nearly every stock and aftermarket head unit on the road today.

Keep the beat

If the amplifier's temperature reaches a set threshold, dynamic power-management algorithms engage a nearly inaudible limiter/compressor, applied only to peaks for as little as milliseconds at a time. Once the amplifier cools, the compressor deactivates and music returns to its full dynamic range without interruption.

• 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)

• 4 channel power amplifier
• Microphone
• Microphone cable with switch
• Fuse holder
• Manual and installation hardware