See all parts that fit your 1975 Century
200W RMS KEY Series 4-Channel Smart Amplifier with Automatic EQ and Processor
• 50 watts x 4 channel @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 200 watts
• Class 4 ohm Stable 4-Channel Amplifier
Choose from any of our many bundles that include this product for even more savings!
2 Pairs Kicker 6.5" Speakers (DSC650) + KEY200.4 Amp w/ Free Amp Install Kit
Kicker 6.5” DS Series Speakers and KEY Series 4-Channel Smart Amplifier with 8 Gauge Wiring Kit and NVX Koozie Accessories
(71)
$409.97
List price $589.94
Bundle Savings of $179.97
Kicker Speakers (DSC6504, DSC69304) + KEY200.4 Amp w/ Free Amp Install Kit
Kicker 6.5" and 6x9" DS Series Speakers with KEY Series 4-Channel Smart Amplifier, 8 Gauge Wiring Kit, and NVX Foam Can Koozie
(104)
$444.97
List price $634.94
Bundle Savings of $189.97
Pair Kicker 6x9" Speakers (DSC6930) + KEY200.4 Amp w/ Free Amp Install Kit
720W Peak 6x9” DS Series 3-way Coaxial Car Speakers with 200W RMS KEY Series 4-Channel Smart Amplifier, 8 Gauge Amp Wiring Kit, and NVX Koozie
(76)
$479.97
List price $679.94
Bundle Savings of $199.97
2 Pairs Kicker 6.5" Speakers (CSC65) + KEY200.4 w/ Free Amp Install Kit
Kicker 6.5” CS Series 2-Way Coaxial Speakers with KEY Series 4-Channel Smart Amplifier, 8 Gauge Wiring Kit, and NVX Can Insulator Koozie
(166)
$399.91
List price $639.94
Bundle Savings of $240.03
2 Pairs Kicker Speakers (CSC65, CSC693) + Amp (KEY200.4) w/ Free Amp Install Kit
Kicker 6.5" and 6x9" CS Series Speakers with 4-Channel Smart Amplifier, Belva 8-Gauge Wiring Kit, and NVX Can Insulator Sleeve Koozie
(206)
$431.91
List price $679.94
Bundle Savings of $248.03
Kicker Pair 6x9" Speakers (CSC693) + KEY200.4 Amp w/ Free Amp Install Kit
Kicker 900W 6x9” 3-Way Coaxial Speakers and 200W RMS 4-Channel Smart Amplifier with Belva 8 Gauge Wiring Kit and NVX Koozie Can Insulator
(83)
$498.89
List price $719.94
Bundle Savings of $221.05
2 Pairs Kicker 6.5" Speakers (KSC65) + KEY200.4 Amp w/ Free Amp Install Kit
Kicker 6.5" KS Series 2-Way Coaxial Speakers, 4-Channel Smart Amplifier, Belva 8-Gauge Wiring Kit, and NVX Can Insulator Koozie
(48)
$499.97
List price $699.94
Bundle Savings of $199.97
600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers
$79.96
List price $119.99
900W Peak (300W RMS) 6x9” CS Series 3 Way Coaxial 4-ohm Speakers with Integrated Midrange Speakers
$111.96
List price $159.99
360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers
$99.95
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600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers
$109.00
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480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)
$84.99
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280W Peak (90W RMS) 6x9” SXE Series 2-way 4-ohm Coaxial Speakers
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Infinity Reference REF6532IXAM
360W Peak (120W RMS) 6.5" Reference Series 2 Way Coaxial 3-ohm Speakers
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600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers
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600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System
$999.99
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250W Peak (200W RMS) 6.5″ PNW Series 2 Way Component 3-ohm Speakers
$319.00
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• 50 watts x 4 channel @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 200 watts
• Class 4 ohm Stable 4-Channel Amplifier
Featuring an AI-driven DSP, 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. 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!
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Manufacturer:
Model Number:
47KEY200.4
Weight:
5.00lbs
Internal SKU:
47key2004
Internal Product ID:
178757
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Good DSP
Amp was very easy to setup automatic dsp and made a huge difference in the sound quality of my speakers
Verified purchase
3 found this helpful
Great little amp
So far so good. Solid upgrade when changing out speakers from my stock system!
Verified purchase
1 found this helpful
Built in DSP
Love the DSP feature
Verified purchase
1 found this helpful
Auto tuning DSP amplifier for under $260 (at time of review), what a deal.
At time of review this amplifier was on sale, under $260 with tax, shipped. I'm just a hobbyist, not really an audiophile, and do not have a pro installer's tools like a real time analyzer or oscilloscope.
I've installed the previous KEY180.4, powering some cheap components in bi-amp mode and was quite impressed with the sound stage and and equalization, even with the baseline gain settings. I'm happy with how it sounds even without a subwoofer. Apparently the 200.4 has some internal tweaks that increased sound quality along with the increase in power, can't wait to install it. It's going into a different vehicle with better components (Alpine Type R), also bi-amped. This truck has a head unit that also has auto time alignment and equalization, I've tried the auto tuning process a few times with some decent coaxials and am still not very happy with the sound stage.
Install hint - triple check the DIP switch settings, it took me a few tries running the tuning process because I had a switch or two in the wrong positions.
Verified purchase
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• 100 watts x 4 channel @ 4 ohm
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• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
