Part number:1 welcome to my store, Hope you have a pleasant shopping trip! Features:The LM4863 used in the power amplifier module is specially designed to provide high-fidelity audio output,which simplifies the design of the audio system,so the digital power amplifier module has clear sound quality,is simple to use,and can be used in a variety of scenarios.Application:1.Laptop2.Desktop computer3.Multimedia monitor4.Portable video systemSpecifications:Input Current:1A (Min)Input Voltage:DC 3V-5VInput Method:3.5 audio input socketOutput Power:4-8ohm,5W*2Work Temperature:-25~85Work Humidity:5%~95%RHSize:50*45*23mmPackage List:1 X Power Amplifier ModuleNotes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow 1-2cm slight dimension difference due to different manual measurement. The Audio Amplifier Supports USB Power Supply and 3.5mm Audio Socket Input. It Has A Potentiometer Knob,which Can Adjust the Volume of the Digital Power Amplifier Module. It Uses LM4863 Chip,the Audio Amplifier Has Higher Sound Quality,has Thermal Protection,and Reduces Boot Noise. The Two-channel Class AB Power Amplifier Board Uses 1% Precision Metal Film Resistors,and Uses 5.08 Blue Connection Terminals. SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied. The Audio Amplifier Supports USB Power Supply and 3.5mm Audio Socket Input. It Has A Potentiometer Knob,which Can Adjust the Volume of the Digital Power Amplifier Module. It Uses LM4863 Chip,the Audio Amplifier Has Higher Sound Quality,has Thermal Protection,and Reduces Boot Noise. The Two-channel Class AB Power Amplifier Board Uses 1% Precision Metal Film Resistors,and Uses 5.08 Blue Connection Terminals. SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied.