Amazon.com: Arylic Subwoofer Amplifier Board,WiFi & Bluetooth Home Audio Amplifier Board for DIY Speaker Kit.Wireless Connection Multiroom/multizone Sync Play for Airplay DLNA - Up2stream Amp Sub : Electronics
Alpine BBX-T600 Amplifier and W12S4 12-inch Single 4 Ohm Subwoofer - Includes wire kit - Creative Audio
Amazon.com: Rockville RV8.2A 800 Watt Dual 8" Car Subwoofer Enclosure+Mono Amplifier+Amp Kit black : Electronics
Amazon.com: Audiopipe APSB-1299PP Dual 12 Inch Car Audio Subwoofer Speakers and Sealed Enclosure, 2 Channel 500 Watt Amplifier, and Wire Installation Kit : Electronics
Kicker CX Series 46CXA12001T Mono Subwoofer Amplifier and 46CK4 Amp Wiring Kit
MTX 12 Dual Loaded Car Subwoofer w/ Sub Box, Amplifier, & QPower Wiring Amp Kit, 1 Piece - Harris Teeter
Amazon.com: MTX TNP212D2 12-Inch 400-Watt RMS Dual Loaded 1200-Watt Car Subwoofer Enclosure Audio with Sub Box, Mono Block Amplifier, and 8 Gauge Amplifier Amp Complete Wiring Installation Kit : Electronics
Vistreck 2.1 Channel Subwoofer Power Amplifier Module DIY Kit 50Wx2+100W Treble Bass Control DC 12-24V BT Audio Amplifier Board Stereo Speaker Digital Amp for Audio System - Walmart.com