Kicker 47KEY2004 4ch Smart Key Amplifier

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

What’s in the box
4-Channel amplifier
12″ Power/ground/speaker output harness
12″ Input harness
Loop wire w/ inline fuse holder (20A 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