JL Audio XD600/1v2 Mono subwoofer amplifier — 600 watts RMS x 1 at 2 ohms at Crutchfield
Kicker 600W Peak (300W RMS) CX Series Monoblock Class D Subwoofer Car – Auto Evoluton NEO
Alpine R-W10D4 Type R 10" Dual 4 OHM Subwoofer with GTR-601 Mono Subwoofer Amplifier 600 watts RMS x 1 at 2 ohms - Creative Audio
Amazon.com: Pyle 6-Channel Audio Marine Amplifier - Compact Power 600 Watt RMS 4 OHM Full Range Stereo with Volume Bass Treble Rotary Control - Wireless Bluetooth Receiver Speaker & LCD Digital Screen PFMRA640BB : Electronics
Kicker 43CXA600.1 Mono subwoofer amplifier — 600 watts RMS x 1 at 2 ohms at Crutchfield