Amazon.com: Amplifier Board 240W High Power 2.1 Subwoofer Power Amplifier Board 3 Channel Audio Amplifier Board Home Theater : Electronics
Planet Audio 1800-Watt Subwoofer plus Boss 1500-Watt Amplifier with Amp Kit plus Q-Power Enclosure AC12D + AR1500M + AKS8 + QSBASS12-VENTED - The Home Depot
Dayton Audio SA100 100W Subwoofer Plate Amplifier
Alpine BBX-T600 Amplifier and W10S4 10-inch Single 4 Ohm Subwoofer - Includes wire kit - Creative Audio