NIUNIU Audio Amplifier Board: This digital power amplifier module has professional design, with reasonable structure, easy to replace and install, and small in size and easy to carry Professional Design: Using 2.0 channel digital stereo design, the signaltonoise ratio is 100 decibels, you can use the power amplifier board with confidence Stereo Amplifier Board: The sound distortion is significantly reduced, bringing you great listening enjoyment and meeting your needs Good Experience: Used in computers and other electronic devices to make a better amplified sound experience Quantity: 1pc Color: As shown in the picture, there is a color difference between the picture and the real object Size: see picture for detailed size