This is a nice powerful clean subwoofer amp in very good condition.....These are very underated and rated at 2000 at 1 ohm...they will run daily at .5 ohm $650 shipped lower 48
in case no one noticed the efficiency, this is a class A/B amp. and i tested mine to be slightly more efficient, and have seen a strapped pair at .5 ohm bench at ~8kw.Some Basic Specs
Frequency response - 10 - 300 Hz +/- 1 dB
S/N Ratio - > 100 dB
Input Sensitivity 0.16 ~ 4 volts
Damping Factor > 700
Efficiency @ 4 ohm 69.10%
Fuse requirement 120 amp
Low pass 40 ~ 300 Hz @ 18 dB / oct
Sub-sonic 10 Hz ~ 100 Hz @ 24 dB / oct
Dimensions (main body) 15" L x 3-9/16" H x 8-13/16" W
Dimensions (overall) 16-5/8" L x 3-9/16" H x 8-13/16" W