I found I2S when used with PS Audio devices to be superior to all...S/PDIF, USB, Optical. With I2S. the power and data stream travel thru different conductors thereby reducing noise and interference.
USB is susceptible to noise since the data and power source are combined and travel thru the same conductor. Noise may be from a computer, the type of power supply, or grounding issue. That's why some sort of decrapifier like the Schiit Wyrd or an Empirical Audio device is needed.
USB is susceptible to noise since the data and power source are combined and travel thru the same conductor. Noise may be from a computer, the type of power supply, or grounding issue. That's why some sort of decrapifier like the Schiit Wyrd or an Empirical Audio device is needed.