Amazon.com: ePathChina 2-Channel Mini Hi-Fi 2 x 18W Car Stereo Audio Amplifier, DC9-15V AMP Electrical Portable DIY Amplifier Subwoofer for Speaker Auto Car Motorcycle Tablet PC TV Laptops : Electronics
Dual Electronics - Digital 2 Channel MOSFET Amplifier - XPR82D
Amazon.com: Pyle 2-Channel Marine Amplifier Receiver - Waterproof and Weatherproof Audio Subwoofer for Boat Stereo Speaker & Other Watercraft - 400 Watt Power, Wired RCA, AUX and MP3 Audio Input Cable PLMRMP1B : Electronics
Amazon.com: Fosi Audio TB10A 2 Channel Amplifier Stereo Audio Amp Mini Hi-Fi Class D Integrated TPA3116 Amp for Home Speakers 100W x 2 with 24V 4.5A Power Supply : Electronics