Kenwood eXcelon XR-1S

1500W Max Reference Fit Class D Monoblock Amplifier

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Reference Fit Class D Monoblock Car Amplifier • 600 Watts X 1 Chan. @ 4 Ohms • 700 Watts X 1 Chan. @ 2 Ohms • 1600 Watts Max • Dual Sigma Drive Technology • Digital Amplifier • Dual Power Supply

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This item has been discontinued

Product Highlights

Reference Fit Class D Monoblock Car Amplifier • 600 Watts X 1 Chan. @ 4 Ohms • 700 Watts X 1 Chan. @ 2 Ohms • 1600 Watts Max • Dual Sigma Drive Technology • Digital Amplifier • Dual Power Supply



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The eXcelon Reference Fit amplifiers may fool some, but those who know Kenwood understand the power behind the aluminum plating. These amplifiers have a small footprint allowing installation in even the tightest of locations. Kenwoods Dual Sigma Drive technology is an advanced negative feedback circuit that improves damping factor and increases accuracy and sound quality. For those who need a truly custom installation the top plate can be removed and replaced with a creation of your choice. For such a small size these amplifiers put out a huge amount of power, just don't let it go to waste.

  • Reference Fit Class D Monoblock Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 600 watts x 1 chan.
    • 2 ohms: 700 watts x 1 chan.
  • Max power output: 1600 watts
  • Digital amplifier technology with dual MOSFET power supply
  • Remote bass level input (Kenwood KAC-X1D remote level control sold separately)
  • LED power indicators
  • Bass Boost (0-18 dB variable bass boost 40-100 Hz)
  • Mono channel operation
  • Line inputs
  • Preamp RCA output
  • 3-Way System Protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy heatsink with built-in cooling fan for extreme heat dissipation
  • Dual Drive Technology (advanced negative feedback circuit sends out opposite pulses to the subwoofer to stop unwanted vibrations increasing accuracy and sound quality)
  • Removable top plate allows for custom fabricators to easily create their own plates
  • Gold-plated RCA level inputs
  • Gold-plated screw terminals
  • Variable low-pass filter (50-200 Hz, 24 dB/octave)
  • Infrasonic Filter (24 dB at 15-40 Hz)
  • CEA-2006 compliant amplifier
  • Frequency response: 20-200 Hz
  • Dimensions: 9-1/4"W x 2-1/16"H x 7-9/16"D
  • 4-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • 2-year Sonic Electronix warranty

Specifications & Details

Power Specifications - Full Range Channels
RMS Power @ 4 ohms
600 watts x 1 channel
RMS Power @ 2 ohms
700 watts x 1 channel
Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
RMS Power @ 2 ohms
RMS Power @ 1 ohm
RMS Power @ .5 ohm
Power Specifications - Full Range Channels
Peak Power @ 4 ohms
Peak Power @ 2 ohms
Peak Power @ 1 ohm
Bridged Peak/Max Power
Power Specifications - Subwoofer Channel
Peak Power @ 4 ohm
Peak Power @ 2 ohms
Peak Power @ 1 ohm
Peak Power @ .5 ohm
Amplifier Specifications
Marine Certified
Amplifier Class
Number of Channels
1 - Mono
Total Peak Power Output
1600 watts
Total RMS Power Output
700 watts
Maximum Input Gauge Size
Minimum Impedance Unbridged
2 ohms
Frequency Response
THD at Rated RMS Power
Speaker Level Inputs
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
Low-Pass Crossover Frequency
50 - 200 Hz
Signal-to-Noise Ratio
86 dB
Bass Boost
0 - 18 dB
Remote bass/level controller
Optional (Accessory required and sold separately)
Fan Cooled
Fuse Rating
30A x 2 
Total Fuse Rating
CEA-2031 Compliant
Sonic Certified Amplifier
Amp Bluetooth Connectivity
Hi-Res Certified
Low-Level Input Sensitivity
High-Level Input Sensitivity
What is in the box?
WITB: Amplifiers
Other Accessory #1
Other Accessory #2
Other Accessory #3
Other Accessory #4
Other Accessory #5
Other Accessory #6
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Sonic Electronix

Item Details


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good things do come in small packages

This is a great little amp. I love it. Nicely made, good quality. Right now it is powering a 10" subwoofer. I bought this one because I have the XR-4S and wanted to be able to stack them. Nice amp, if you need small mono amp, check this one out. Compares quite favorably to the Alpine PDX and the other compact class D from Kicker and JL Audio.

By Chris on August 11, 2010


found this helpful.

Nice Amp. Could use a little work

The Kenwood eXcelon XR-1S is a little amp. I just recently pulled this amp out and installed a Jl Audio 500/1v2 slash amp for my 10 w7 and I must say, the Kenwood hits harder. One thing i do not like about the Kenwood is that it deletes some of the mids and highs in the sub which is very strange to Not hear. It is definitely louder than the JL amp but lacks some potency. Fan is very nice to have as well for those hot days.

Still a very good Quality amp.

By Miles on January 9, 2011


found this helpful.

great item

This has been a great amp. I used it behind a seat in a lotus elise and it has worked great.

By khauger on December 23, 2009


found this helpful.


I got a 2010 Impala with eXcelon DNX7140 Double Din with this amp powering their eXcelon XW1224 sub. Its so accurate n still gets real real deep. No need for 2 unless bass junkie. They are matched at 600 watts rms. Match made in heaven.

By RAFFE on May 2, 2011


found this helpful.


ABSOLUTELY AMAZING AMP! I have it pushing two mtx thunderthin 10's with a power rating of 300 watts rms per sub and the amp has power to spare. The amp is very compact and looks great....This amp is pushing every bit of the 700rms at 2ohm. The power is very clean and it has a built in fan that works great to control the heat....I have never seen an amp so compact push so much power....Spend the extra money and you WILL NOT BE DISSAPPOINTED! Kenwood's excelon series stuff is always top notch and this amp proves it!

By john on June 10, 2010


found this helpful.


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