XRONG Subwoofer Amplifier Home Audio, Bluetooth Amplifier 5.0 Stereo,2.1 Channel Mini Hi-Fi Class D Integrated Amp 80 Watt x2+80 Watt for Home Outdoor Passive Speakers,Powered Subwoofer - Newegg.com
Amazon.com: Bluetooth 2.1 Amplifier RT-16B, Mini Hi-Fi Class D Integrated Amp for 100W x 3 with Bass and Stereo Control Home Subwoofer and Speakers (with Power Supply) : Electronics
Amazon.com: Fosi Audio M04 Subwoofer Amplifier for Home Theater Mono Channel Digital Class D Integrated Power Amp for Passive Speakers Subwoofer Rated 100W MAX : Electronics
Acoustic Audio WS1005 Passive Subwoofer Amp 200 Watt Amplifier for Home Theater - Walmart.com