I have for sale a MBquart DSC4125. I bought it brand new and used it for a few weeks and power is great. I just have too many amps. I can get pictures up later tonight. I have lots of refs over at diymobileaudio.com. Comes with original box, manual, and all parts. I double box when shipping.
$125+shipping.
* Discus Series 4-Channel Class AB Car Amplifier
* RMS Power Rating:
o 4 ohms: 125 watts x 4 chan.
o 2 ohms: 250 watts x 4 chan.
o Bridged, 4 ohms: 500 watts x 2 chan.
* PWM (Pulse Width Modulated) MOSFET power supply
* Remote bass level input (remote level control sold separately)
* LED power and protection indicators
* Tuned Bass EQ (0-9 dB bass boost at 45 Hz)
* Bridgeable operation
* Soft start sound
* Preamp RCA outputs
* DC, short, thermal, and overload protection circuitry
* Unbalanced RCA inputs
* Switchable 2-channel/4-channel input modes
* Damping Factor: >180
* Variable input level control: 0.2V-0.6V
* Variable high-pass filter (10-1200 Hz, 24 dB/octave)
* Variable low-pass filter (30-150 Hz, 24 dB/octave)
* Frequency response: 10-20000 Hz
* Dimensions: 15.75"L x 9.45"W x 2.7H
Read more here if you like about this amp
http://caraudio.com/forum/amplifiers/415854-mb-quart-dsc4125-review.html
$125+shipping.
* Discus Series 4-Channel Class AB Car Amplifier
* RMS Power Rating:
o 4 ohms: 125 watts x 4 chan.
o 2 ohms: 250 watts x 4 chan.
o Bridged, 4 ohms: 500 watts x 2 chan.
* PWM (Pulse Width Modulated) MOSFET power supply
* Remote bass level input (remote level control sold separately)
* LED power and protection indicators
* Tuned Bass EQ (0-9 dB bass boost at 45 Hz)
* Bridgeable operation
* Soft start sound
* Preamp RCA outputs
* DC, short, thermal, and overload protection circuitry
* Unbalanced RCA inputs
* Switchable 2-channel/4-channel input modes
* Damping Factor: >180
* Variable input level control: 0.2V-0.6V
* Variable high-pass filter (10-1200 Hz, 24 dB/octave)
* Variable low-pass filter (30-150 Hz, 24 dB/octave)
* Frequency response: 10-20000 Hz
* Dimensions: 15.75"L x 9.45"W x 2.7H
Read more here if you like about this amp
http://caraudio.com/forum/amplifiers/415854-mb-quart-dsc4125-review.html