Compact 4-channel amplifier with automatic tuning DSP — 50 watts RMS x 4 47KEY200.4

• 4-channel car amplifier/sound processor

• 50 watts RMS x 4 at 4 ohms

• CTA-2006 compliant

• non-bridgeable — minimum impedance of 4 ohms per channel

• Class D amp technology

• KEY Auto Setup customizes the signal for your vehicle

  • calibration mic and activation button included

  • pink noise test tones available from Kicker.com

  • automatic adjustments include 40-band EQ, 24 dB/octave crossover filters, time alignment

• Bi-Amp 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 Info:

• automatic limiter with clip lights

• preamp and speaker-level inputs

  • DC offset sensing turn-on with speaker-level inputs

• Radio-Detect circuit supplies speaker load for receiver to sense

• wiring and hardware not included with amplifier

  • 12- or 10-gauge power and ground leads recommended

• fuse rating: 20A x 1

• dimensions: 7-3/8"W x 1-11/16"H x 2-3/4"D

⚙️ Performance Specifications

• RMS Power Output (Watts x Channels): 50 x 4

• Minimum Impedance (Unbridged): 4 ohms

• Frequency Response: 20 Hz – 20 kHz

• Total Harmonic Distortion (THD) @ RMS Power: 1%

• Signal-to-Noise Ratio: 90 dB

• Input Voltage: 14.4V

🎛️ Features

• Amplifier Class: D

• Built-in DSP: Yes

• Remote Control: No

• Low-Pass Crossover Frequency: 640 Hz, 3200 Hz

• Low-Pass Slope: 24 dB/octave

• High-Pass Crossover Frequency: 60, 80, 120, 320, 3200 Hz

• High-Pass Slope: 24 dB/octave

• Bass Boost: No

• Fan Cooled: No

• Fuse Rating: 20 A

• Speaker-Level Inputs: Yes

• Preamp Outputs: No

📏 Dimensions

• Width: 7-3/8"

• Height: 1-3/4"

• Depth: 2-13/16"

• 4-Channel amplifier

• 12" Power/ground/speaker output harness

• 12" Input harness

• Loop wire w/ inline fuse holder

• 20-amp ATO fuse (installed)

• Calibration microphone w/ attached 11.5' cable and inline Activation button (cable terminated in a 3.5mm TRS plug)

• 16" Rubber microphone strap

• Two 12" wire ties

• Four 1" screws

• Quickstart guide