ITEM NAME:TPA3116D2 2X50W Digital Amplifier Board D Class Stereo Dual Channel AMP DC JR Description: Product Name: TPA3116D2 digital amplifier board Product Type: XH-M189 Chip Type: TPA3116D2 Chip protection: overvoltage undervoltage overheating DC detection and short circuit Supply voltage: DC 5-24V Output power: up to 50WX2 Switching frequency: 1.2MHZ Number of channels: 2-channel stereo Product weight: 63g Product size: 100 x 50 x 23mm(3.94" x 1.97" x 0.91") Package Included: 1 x Digital Amplifier Board.Chip Type: TPA3116D2. 1 x Digital Amplifier Board. Number of channels: 2-channel stereo. Output power: up to 50WX2.