Kicker 47KEY500.1 Compact mono subwoofer amplifier with automatic tuning DSP — 500 watts RMS at 1 ohm at Crutchfield
Dual 10" 2,400 Watt SDR Series Loaded Sub Box & Amplifier | Skar Audio
Amazon.com: Fosi Audio M03 200 Watt TPA3255 Subwoofer Amplifier Mini Mono Channel Audio Power Amp for Home Theater Full-Frequency and SUB Bass Switchable with 32V/5A Power Supply : Electronics
Monoprice SWA-200 Subwoofer Amp - Black - 200 watt with Crossover, Phase Control, Cool Class D Amps - Walmart.com