Alpine MRV-M500 500W Mono Channel V-Power Digital Amplifier

RFRB Rockford Fosgate P500X1BD P500-X1BD 500 WATT Punch AMP

Kenwood X502-1 Mono subwoofer amplifier — 500 watts RMS x 1 at 2 ohms

Old School USA Rockford Fosgate Power 450S 2-Channel Amplifier 225x2W RMS amp

Rockford Fosgate P400X1 400 Watt Monoblock Amplifier Punch Mono Amp

SKAR AUDIO SK-M5001D 500W RMS ULTRA COMPACT CLASS D MONOBLOCK CAR AMPLIFIER

Rockford Fosgate Punch P400-4 50x4/200x2 watts rms. Free shipping.

JBL Stage GT 50011 Mono Car Subwoofer Amplifier 500W RMS at 2 ohm 1220W Max