а как насчет Power Acoustik BAMF-4000.1D ?
Power Acoustik BAMF4000/1D Car Audio 4000W Subwoofer Amplifier 
4000W Max Monoblock Class D Amplifier Car Amplifier
RMS Power Rating:
4 ohms: 1200 watts x 1 chan.
2 ohms: 1700 watts x 1 chan.
1 ohm: 2200 watts x 1 chan.