Lanzar OPTS180.1D Opti Scion 2240 Watt Mono Block Competition Amplifier 1 x 750W RMS at 4 OHMS 1 x 1300W RMS at 2 OHMS 1 x 2240W MAX at 1.3 OHMS Frequency Response - 15Hz-150Hz Input Sensitivity (Subsonic) - 15Hz-40Hz, 24dB