Kenwood Excelon XR400-4 4-Channel Car Audio Amplifier

Super-slim profile, big-time power
Kenwood's Excelon XR400-4 4-channel amplifier adds clarity and punch to your car's audio system, as it powers each of your front and rear speakers with 75 watts RMS. As your system changes, you can also use the XR400-4 in 2-channel mode to drive a couple of subs with up to 200 watts RMS each. The XR400-4 can fit in many different places in your car because of its incredibly low profile — it's under 1-1/2" tall.

Designed for optimum efficiency
Kenwood packed this amp with space-saving features. Class D technology reduces the size of the power supply, while the internal heatsink is tilted to reduce height without compromising the amp's cooling system. Recessed power and speaker wire terminals help to further reduce the amp's footprint, protect the connections, and give your installation a neat, professional look.

Controls for the best sound — bi-amp capable
You can contour the sound with high- and low-pass filters so your speakers play efficiently and sound their best. The front and rear channels have separate gain and filter controls so you can adjust for different types of speakers. The XR400-4 also gives you the ability to "biamp" your system, amplifying the tweeters and woofers separately for greater power and control over the sound.

Highlights:

4-channel amplifier
75 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
200 watts RMS x 2 bridged output at 4 ohms (4-ohm stable in bridged mode)
CEA-2006 compliant
variable high- and low-pass filters (50-200 Hz; 2.5K-10k Hz, 12 dB/octave)
Class-D amplifier design
frequency response: 20-20k Hz
preamp inputs
fuse rating: 30A x 2
4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
8-11/16"W x 1-7/16"H x 8"D

Features and Specs

Performance
RMS Power Output (Watts x Channels) 75 x 4
Peak Power Output (Watts x Channels) N/A
Power at 2 Ohms (Watts x Channels) 100 x 4
Bridged Power (Watts x Channels) 200 x 2
Minimum Impedance Bridged 4
Minimum Impedance Unbridged 2
Best Frequency Response 20-20k Hz
THD at Rated RMS Power 1%
Signal to Noise Ratio 76 dB
Input Voltage 14.4v
Features
Amplifier Class D
Low-Pass Crossover Frequency 50-200 or 2.5k-10k
Low-Pass Slope (dB/octave) 12 dB/octave
High-Pass Crossover Frequency 50-200 or 2.5k-10k
High-Pass Slope (dB/octave) 12 dB/octave
Bass Boost No
Bass Boost Frequency N/A
Fan Cooled No
Fuse Rating 60
Speaker Level Inputs No
Preamp Outputs No
Width (inches) 8-11/16
Height (inches) 1-7/16
Depth (inches) 8