3. Amplifier for beginners
  5. KEY200.4

KEY200.4

1 review

50 Watt

KEY200.4

1 review

Technical Highlights

  • 50 Watts RMS x 4 into 4 Ohm, Class D Technology, 4 Channel.
  • 40 Band EQ, 24 dB/Octave Crossover, Auto-Compression.
  • DC Offset Detection, Signal to Noise Ratio 90 dB.
  • More technical details
€319.00
€319.00 €319.00
2% discount with credit card

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ProductKEY200.4

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1 year extra warranty

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Ai-Sonic-S2-A60.4-4-Kanal Verstärker-masori-kaufen
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€319.00
€319.00 €319.00

More power than KEY200.4 here!

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The KEY200.4 from KICKER is a 4-channel amplifier that takes your sound experience to a new level. The Class-D amplifier technology and an output of 50 watts RMS x 4 at 4 ohms guarantee you a powerful performance. Automatic adjustments such as a 40-band EQ and 24 dB/octave crossover filter are just some of the numerous features you can expect with this device. Numerous setting options and customization options make the KEY200.4 an excellent choice for any music lover.

Technical data

  • 4-channel amplifier
  • 50 Watt RMS x 4 at 4 Ohm
  • not bridgeable - minimum impedance of 4 ohms per channel
  • Class-D amplifier technology
  • KEY Auto Setup adjusts the signal for your vehicle
  • Calibration microphone and activation button included
  • Pink Noise test tones available on Kicker.com
  • automatic adjustments include 40-band EQ, 24 dB/octave crossover filter, time alignment
  • Bi-Amp mode applies the high/low crossover settings during KEY Auto Setup
  • switchable auto-compression
  • selectable high-pass filters (off, 60, 80, 120 Hz; 24 dB/octave)
  • automatic limiter with clip lights
  • preamplifier and speaker level inputs
  • DC offset detection for speaker level inputs
  • Radio-Detect circuit provides speaker load for receiver to detect
  • Wiring and hardware not included with the amplifier
  • 12- or 10-pin power and ground cables recommended
  • Fuse rating: 20A x 1
  • Dimensions: 7-3/8"W x 1-11/16"H x 2-3/4"D
  • Warranty: 1 year
  • RMS output power (watts x channels) 50 x 4
  • Peak Output Power (Watts x Channels) N/A
  • Power at 2 Ohms (Watt x Channels) N/A
  • Bridged Power (Watt x Channels) N/A
  • Minimum impedance bridged N/A
  • Minimum impedance not bridged 4
  • minimum impedance 4
  • Best frequency response 20-20k Hz
  • Distortion factor at nominal RMS power 1
  • signal-to-noise ratio 90 dB
  • input voltage 14.4 V

    Immediately available 4-Channel Amplifier

      Frequently Asked Questions about KEY200.4

      How does Class D amplifier technology affect the KICKER KEY200.4?

      The Class D amplifier technology of the KICKER KEY200.4 allows for more efficient power usage and a more compact design. With a power output of 50 Watts RMS x 4 at 4 Ohm, this 4-channel amplifier provides powerful audio output. The high efficiency also reduces heat generation, which extends the device's lifespan. This makes the KEY200.4 ideal for tight installation spaces where complex cooling systems should be avoided. Especially under high power demands, such as when operating speakers with low sensitivity, the strength of Class D technology is evident in sustainably stable performance.

      What features does the KEY Auto Setup offer for the KICKER KEY200.4?

      The KEY Auto Setup of the KICKER KEY200.4 allows for automated adjustment of the audio signal specifically for the vehicle. Using a calibration microphone and the activation button, the audio system is calibrated and adjusted. It includes a 40-band EQ that enables targeted correction of frequency anomalies, as well as a 24 dB/octave crossover filter for precise transitions between frequency ranges. The integrated time alignment significantly improves the soundstage by optimizing the timing of different frequency bands. The switchable auto-compression and automatic limiter complete the adjustments for an optimal listening experience.

      What options does the Bi-Amp mode of the KICKER KEY200.4 provide?

      The Bi-Amp mode of the KICKER KEY200.4 allows for separate amplification and equalizer adjustments for high and low-frequency speakers. During the KEY Auto Setup, high/low-frequency crossovers are specifically configured to achieve an optimal balance between frequency ranges. This mode is particularly useful if you have a car audio system with specific requirements for sound characteristics. The automatic adjustment ensures that frequencies are distributed more efficiently, resulting in clearer audio output and optimized sound performance.

      What adjustments are possible with the selectable high-pass filters on the KEY200.4?

      The KICKER KEY200.4 features selectable high-pass filters with settings for 60, 80, and 120 Hz, each with a slope of 24 dB/octave. These filter settings allow you to remove unwanted low-frequency content from the signal that could strain the speakers and diminish sound quality. The high-pass filter is particularly effective at separating frequencies for clearer bass reproduction and prevents overdriving the woofers or midrange drivers. When you use the high-pass filter correctly, a more harmonious and balanced soundstage is achieved.

      How does the DC offset detection work in the KICKER KEY200.4?

      The DC offset detection in the KICKER KEY200.4 is used to automatically turn on the device when an audio signal is detected. This function detects a DC deviation in the speaker level signal, meaning the amplifier does not need to remain permanently on, thus saving energy. This eliminates the need to run additional remote wires. This is particularly useful when the amplifier is connected to factory radios or older audio systems, as they do not always provide a dedicated remote function. The integration of this feature significantly simplifies installation and setup.

      What impact does the automatic limiter have in the KICKER KEY200.4?

      The automatic limiter in the KICKER KEY200.4 protects your system from overdriving by smoothing out dynamic peaks and reducing distortion. The built-in clip lights provide a visual confirmation of limiter activation. This feature is crucial for protecting speakers from damage due to excess power. Especially with high-quality audio equipment that you operate in tight installation spaces or under extreme volume conditions, the limiter helps maintain consistent sound quality and avoid unpleasant distortion.

      What installation guidelines apply to the KICKER KEY200.4 regarding dimensions?

      The dimensions of the KICKER KEY200.4 are 7-3/8" W x 1-11/16" H x 2-3/4" D, allowing for a space-saving installation. When installing in vehicles, care should be taken to ensure that the amplifier is adequately ventilated and not mounted in areas exposed to extreme temperatures. The compactness allows for versatile installation options, even in vehicles with limited space. It is recommended to use 12- or 10-gauge power and ground cables to ensure a stable power supply, which is important for the performance and longevity of the amplifier.

      What is the signal-to-noise ratio of the KICKER KEY200.4?

      The signal-to-noise ratio (SNR) of the KICKER KEY200.4 is 90 dB. This value indicates how much stronger the audio signal is compared to the background noise. An SNR of 90 dB suggests a very clear and low-noise signal, ensuring excellent sound quality. Especially in demanding sound environments, where fine details should be audible, a high SNR value is advantageous. This allows for precise reproduction of subtle nuances in the music without disruptive noise or distortion.

      What inputs does the KICKER KEY200.4 support?

      The KICKER KEY200.4 supports both preamp and speaker-level inputs. Preamp level inputs use a clean, unamplified audio signal, which is ideal for aftermarket audio sources. If your setup includes factory radios or older audio systems, the speaker-level inputs provide the flexibility to connect directly to existing speaker wiring. This combined input variety allows for broad compatibility with various audio components and facilitates the integration of the amplifier into diverse audio systems while ensuring signal stability.

      What preparations are important for the setup of the KICKER KEY200.4?

      For optimal setup of the KICKER KEY200.4, it is essential to correctly position the calibration microphone and use the activation button to start the auto-setup process. Ensure that the microphone is ideally located in the center of the vehicle to obtain accurate measurements. The accompanying software will then make specific adjustments based on the acoustic characteristics of the vehicle. At the same time, the pink noise test tones available on Kicker.com should be used to ensure an even frequency distribution. All these steps guarantee optimized audio output.

      Manufacturer information/responsible person

      SONOAUTO AB
      Brodalsvägen 1B
      433 38 Partille
      Sweden
      +46 (0) 31 44 44 12

      info@sonoauto.se

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