The DAC part adopts ES9018K2M decoding of American company. The decoding chip supports 32bit/384kHz, and DSD, with excellent dynamic DNR: 127dB; low distortion THD+N 120dBUSB decoding chip supports 24bit 96kHzMultiple sets of LDOs are used to avoid interference between different circuits, digital-to-analog separation of ground lines, and reduction of interferenceThe op amp part is powered by positive and negative voltage, and 3 op amps are used. Two (TI NE5532) are responsible for I/V conversion and LPF. One (TI TL072) is responsible for differential single-ended, the bottom of the op amp. The installation of Taiwan Zhengling 's socket not only ensures good contact, but also facilitates the replacement of different styles of op amps by fans. supply mode: USB supplySupport Windows XP/VISTA, Windows 7/8/10; OS; Plug and PlayRibbed process chassis, the appearance of throwing from the same price machine , gold-plated RCA terminal output. RCA line output on the board, can be connected to active speakers or amplifiers, can not directly connect passive speakersInput: USB interface; Output interface: RCA (double lotus)Size: length 78mm x width 51mm x 21mmColour: As ShownMaterial: ABSPackage Contents:1 x Audio DecoderOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.