Description: The HiFi audio decoding amplifier board adopts original PCM5100 and MS8416, USB uses custom decoding chip, op amp NE5532. The resistor uses a five- metal resistor, and the main circuit uses a five- metal film resistor with an accuracy of ±1% to ensure a good signal-to-noise ratio. Coupling capacitor adopts chip inlet capacitor, main filter electrolytic capacitor capacity is 2200UF/25V, ensuring strong and continuous power support. PCB uses 1.6mm thick double-sided sheet, 2.0oz copper thickness, spray tin full process, to ensure good passing performance of large and small current. First-class PCB quality. Coaxial input support to 96KHz, optical input support to 96KHz, USB support 48KHz (computer does not need to install driver). Specification: PCB size: 144x83mm Voltage: DC 12V Input: Optical Fiber Input; USB Input; L/R Channel Analog Signal Input Output: 6.5mm Headphone Output; L/R Channel Audio Output Package Includes: 1 Piece Audio Decoder Board(2 Pack)