ITEM NAME:TPA3116D2 2 Channel Stereo High Power Digital Audio Power Amplifier Board Module Product Description Description: Feature: TPA3116D2 digital power amplifier board, with dual channel, high power, shock volume.The power supply voltage is DC 12~26V. It is recommended to use 24V. It has the function of op-amp. After the input of sound source, TL074C is amplified to make the volume more shocking. Specification: Chip type: TPA3116D2 Input voltage: DC 12-26V (recommended 24V) Output power: maximum 120W*2 Vocal Track Number: Dual-Channel Product size: 92*68*15mm/3.62*2.67*0.59'' Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understand. Included: 1 X TPA3116D2 Dual-Channel Stereo Amplifier Board.It has the function of op-amp. Chip type: TPA3116D2. Included: 1 X TPA3116D2 Dual-Channel Stereo Amplifier Board. Output power: maximum 120W 2. If item is defective after 3 months, you can still send it back to us.