HEY GUYS I GOT A ARC AUDIO 2500 CXL FOR SELL WAS IN MY FRIENDS 98 M3 SPECS ARE
Features

* Dual Sided 4 Layer PC Board
* Variable Speed Fan Cooling
* Unique High Efficiency Power Transformer
* 500 Amp Switching FET Power Supply
* High/Low/Full Range Selector Switch
* 50Hz – 5.5kHz Variable 12 or 24 dB/Octave Crossover
* 0-18dB @ 45Hz Variable Bass Boost
* Reverse Voltage, Over Voltage, Speaker Short, and Thermal Overload Protection
* Power Save Mode for Longer Low-Level Playing Time
* Heavy-Duty Construction with Cast Aluminum Heat Sink
* Deluxe, Audiophile Grade RCA Connectors
* RCA Pass-Through Outputs
* Damping Factor: >2000 @ 1kHz, Slew Rate: 60V/uS

2-Channel Amp Specifications

* Amplifier Type: 2-channel
* RMS Power @ 4 Ohms: 250W x 2
* THD at 4-Ohm RMS Power: 0.05 %
* Bridged RMS Power @ 4 Ohms: 1050W x 1
* Speaker Level Inputs: no
* Preamp Outputs: yes
* Built-In Crossovers: HP/LP
* Bass Boost: 0-18 dB
* Frequency Response: 20-20,000 Hz
* Signal to Noise Ratio: >105 dB
* Dimensions: 18 L x 8 W x 2.35 H
HE BOUGHT IT FOR OVER 700 BUCKS THE AMP IS STILL VERY CLEAN
HERES SOME PICS
http://community.webshots.com/photo/...58818458kkDWXC
http://community.webshots.com/photo/...58818458QvTtgX
http://community.webshots.com/photo/...58818458ePWHex