Amazon.com: LTEFTLFL 200W 12V HiFi High Subwoofer Amplifier Board Mono Amp Power Car Audio Player : Electronics
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
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 - Walmart.com
Monoprice SWA-200 Subwoofer Amp - Black - 200 watt with Crossover, Phase Control, Cool Class D Amps - Walmart.com