Rockford Fosgate P1000X1bd Monoblock Car Audio Amplifier Class BD Subwoofer Amp
And the P1000X1bd can drive a 1-ohm load, so you can power multiple subs without any trouble. Rockford Fosgate P1000X1bd Monoblock Sub Amplifier. It's that simple — your amplifier will be perfectly set to match your receiver's output.