Kicker KEY200.4 Amp 4 Channel Full Range Car Smart Amplifier & DSP 4x50w
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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.
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Specification
| Series | KEY |
|---|---|
| Article Number | KEY200.4 |
| Country of Manufacture | China |
More specs
| |
What's Included
- 4 channel power amplifier
- Microphone
- Microphone cable with switch
- Fuse holder
- Manual and installation hardware
Kicker
About the Kicker KEY200.4
From our tech experts at CEN
The Kicker KEY200.4 is a 4-channel full-range car amplifier with built-in DSP, delivering 200 watts (4 x 50W). An included microphone automatically runs a 40-band equaliser and time alignment, tuning your system in minutes without manual adjustment. FIT2 technology ensures compatibility with virtually any stock or aftermarket head unit.
Who it suits
This amplifier suits drivers who want to upgrade factory speakers without replacing the head unit, particularly where manual DSP tuning is not practical. The automatic calibration process makes it accessible regardless of technical experience. Those also wanting dedicated subwoofer power can pair it with the Kicker 46CXA400.1.
Our tech experts advise
At under 8 inches long and 2 inches high, the KEY200.4 fits under a seat, behind the radio, or in the boot. It is fully compatible with start-stop vehicles. Run the calibration microphone in a quiet car with windows closed for the best result. Installation is priced per vehicle — see our car audio installation service in Nottingham for details.
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Have it Fitted By Our Team
Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.
- 1
Tell us your vehicle
Make, model and year, and what you'd like fitted.
- 2
We confirm the parts
Fascia, wiring and interfaces checked for your car, with a fitted price.
- 3
Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
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Frequently Asked Questions
Q: How do I choose the right amplifier for my speakers or subwoofer?
A: Match the amplifier's RMS output per channel to the RMS handling of your speakers or subwoofer at the same impedance. The Specification tab lists the power figures. If in doubt, contact CEN with your setup and we will recommend a match.
Q: What wiring do I need to install this amplifier?
A: You will need an amplifier wiring kit sized to the amplifier's power draw, typically including power and earth cable, a fuse, RCA leads and a remote wire. CEN stocks complete wiring kits, and the amplifier's fuse rating is the guide to the cable gauge required.
Q: What class of amplifier is this and does it matter?
A: Class D amplifiers are compact and efficient, ideal for subwoofers and modern installs. Class AB designs are traditionally favoured for outright sound quality on mid and high frequencies. The class is listed in the Specification tab where provided.
Q: Will an amplifier work with my factory head unit?
A: Yes, in most cases. If your head unit has no RCA outputs you will need a line output converter to feed the amplifier a clean signal. CEN stocks line output converters and can advise the right one for your vehicle.
Q: Can CEN install this amplifier?
A: Yes. CEN offers professional amplifier installation from our Nottingham premises, including secure mounting, wiring and setup. Contact us to book.
Q: How does the Kicker KEY200.4 auto-tune my system?
A: Press the selector and the included microphone measures your car's acoustics. The KEY then sets its 40-band equaliser and time alignment automatically and detects speaker size, all in a matter of minutes.
Q: Will the KEY200.4 work with my factory stereo?
A: Yes. It is designed to upgrade factory systems, with FIT2 (Fail-Safe Integration Technology) for compatibility with nearly every stock and aftermarket radio, and turn-on via a remote 12V signal or DC offset.
Q: Is the KEY200.4 compatible with start-stop vehicles?
A: Yes. The KEY200.4 is fully compatible with vehicles using start-stop systems.
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