Topping D30 DSD Audio Decoder USB Coaxial Optical Fiber XMOS CS4398 24Bit 192KHz D30 support USB, Coaxial and Optical inputs with the rate of 16-24bit/44.1-192kHz. D30 only have 2 switch and 2 LED, these are already enough for operate and display. You will feel easy to enjoy with. For technology problems, most DAC will has pop noise while switching DSD and PCM. We design a circuit which made of relay and electronic switch, it cut off all pop noise of D30, including turning on, turning off and switching DSD and PCM. D30s shell is just like our other products, made by machining center and engraved by high power laser. XMOS is famous for ultra low jitter. It provides DSD64, DSD128 and 24bit/192kHz support. It also support ASIO audio software interface.