I have a Kenwood Excelon CD/mp3/USB head unit. Bought it new couple months ago.

perfect shape I just bought a different more competition type deck.

The kenwood is in perfect shape I always use the remote. not a mark on it.

great deck. $150 shipped

I also have a new mono amp that is about 12x5x2 in size. does 500 x 1 @ 2ohms or 300 x 1 @ 4ohms. 60 amps worth of fuse so it probably does more than that. its class G/H so its efficient but sounds better than class D.

Same as a Arc Audio KS500.1 mini

new in box $125 shipped.

 

here are the specs for the mono amp:

specs for ARC AUDIO KS500.1
ARC Audio KS 500.1 Mini
The KS 500.1 mini uses a Patent Pending Auto Sense Turn-on circuit that offers a significant improvement in reliability. No more will the amp unexpectedly turn off in the middle on a song. Instead of relaying on the music to supply enough signal to turn the amplifier on ARC Audio's new design detects the BTL IC (chip amp) used in the vast majority of stock head units and amplifiers. To further simplify OEM integration the KS 500.1 uses a fully balanced input stage that is switchblade between speaker and RCA input. Simply plugging your stock speaker wires into the RCAs will supply perfectly clean signal and turn the amp on. What could be easier then that? Well how about reversing the remote turn-on connection to turn on the rest of you amplifiers? Once the KS500.1 is set to Auto Sense the remote turn-on now becomes an output to turn on all your other equipment.

Compact Single Channel Amplifier Design
Optically Isolated Mosfet Power Supply
Can Drive Highly Reactive Loads
Protection Against: Reverse Voltage, Over Voltage, Speaker Short, and thermal Overload
Built in Compact Cooling Fan
Compact Chassis Design for Small Vehicle applications
Designed by Robert Zeff
Class A/B Non Digital Switching design
Stable to 2 ohms


Specifications:
Power @ 4 ohms: 310 X 1 watts @ 14.4 Volts
Power @ 2 ohms: 500 x 1 watts @ 14.4 Volts
Signal to Noise: 82dB
THD: .05%
Frequency Range: 30Hz– 200Hz
Crossover: 30Hz – 200Hz
Bass Boost: 0 - 15dB @ 30Hz - 125Hz
Fuse: 30A x 2
Size: 11.6' (L) x 5.15” (W) x 1.7”(H)



The amp above is the mainstream high dollar model and the amp below that I am selling is the same but its not labeled the same. Manufactured by the same plant using the same design from the same engineer. same thing happens all the time with Tv's and other electronics. You pay more for the name and nothing else.




specs for KRYPT KMA500.1(acr audio internals)


Specifications:



KMA500.1

Class H Subwoofer Amplifier

Output Power (RMS) @ 1% 100Hz 14.4V CEA 2009



Mono @ 4 Ohms 1x312 Watts

Mono @ 2 Ohms 1x509 Watts

Signal to Noise 82db

THD .05%

Frequency Range 20Hz - 200Hz

Crossover 30Hz -2000Hz

Bass Boost 15db @ 30Hz- 125Hz

Fuse 30A x 2

Input Sensitivity .3V- 3.5V

Input Impedance 10K ohms


And for the Kenwood kdc-x891

• CD/MP3/WMA Receiver with Remote with USB Interface
• Power Output:
  • Peak: 50 watts x 4 channels
  • RMS: 22 watts x 4 channels
• Built-in MOSFET Amplifier
• Radio Data System (RDS) with text
• Motorized, fold-down detachable face with a 64-color fluorescent display
• 24-bit digital-to-analog converter
• System Q EX Sound Control (6 EQ curves and a 3-band parametric equalizer)
• "Supreme" audio processing for better sound from your compressed music files
• System E's + high and low-pass filters
• Rear USB and auxiliary inputs
• Optional connecting cable gives you iPod control (uses both the USB and aux inputs)
• Compatible with Kenwood's Bluetooth® adapter KCA-BT100
• Compatible with Kenwood's iPod control adapter KCA-iP200 (USB or auxiliary input can be used for something else)
• Satellite radio-ready (XM or SIRIUS tuner, service subscription, and antenna required)
• HD Radio tuner ready (Requires KTC-HR100TR)
• CD changer controls
• Three sets of 5-volt preamp outputs
• Car performance computer
• Clock
• CD frequency response: 10 Hz - 20,000 Hz
• CD signal-to-noise ratio: 105 dB
• FM sensitivity: 9.3 dBf

Kenwood Excelon KDC-X891 CD receiver with MP3/WMA/AAC playback at Crutchfield.com