Product
IA 40.1 (used)
specs
Factory rating:
3600 watts @ 1 ohm
1800watts @ 2 ohm
900 watts @ 4 ohm
I've personally got about 4200 watts out of it at 1.25 ohms (12volt input).
Will do over 5000 watts on 16+ volt system (or lower impedance), and can handle up to 18 volts of input...