ITEM NAME:TPA3116D2 50W*2 DC 12-24V Digital Amplifier Board Class Dual Channel Stere AMPJR Specification: Chip type: TPA3116D2 Input power: DC12-24V Output power: 2*50W Output channel: 2 (left and right) Package include: 1pc * TPA3116D2 Amplifier Board.Chip type: TPA3116D2. 1pc TPA3116D2 Amplifier Board. Output power: 2 50W. Output channel: 2 (left and right).