I have a MA Audio M686i Competition Amp.

Specs:

Regulated Power Supply
Full Mosfet Circuitry
Soft Start Turn-on
3-Way Protection Circuit
Gold Plated RCA Terminals
Double Sided Glass Epoxy PCB Board
Variable 120-800 Hz High Pass Crossover
Variable 40-120 Hz Low Pass Crossover
0-18dB Variable Bass Boost
THD 0.05%
100mV – 4V RCA Input Voltage
    *  2 Channel 800 Watt High Performance Amplifier
    * 2 x 200W Rms
    * 2 x 400W Max
    * S/N Ratio 94dB
    * 1/2/3 Channel Operation
    * Dimensions (W x H x L): 10” x 2” x 15.75”


*has cosmetic damage


and I also have an Alpine CDA-9805 Headunit

    *  detachable face
    * MaxTune tuner
    * 12 FM/6 AM presets
    * Bass Engine (bass center frequency, width, and level, plus treble center frequency and level adjustments)
    * Media Xpander
    * XM Satellite Radio controls
    * CD changer controls for Alpine Ai-NET changers only
    * optional auxiliary input
    * MOSFET internal amp
    * 4-volt front and rear preamp outputs
    * 4-volt subwoofer preamp outputs
    * clock
    * 23 watts RMS/50 peak x 4 channels
    * CD frequency response 5-20,000 Hz
    * CD signal-to-noise ratio 105 dB
    * FM sensitivity 9.3 dBf
    * 1-year warranty


*wear on buttons


I will let them both go for $300 plus shipping. or $160 a piece. OBO