D2P outputs PCM signals converted from DSD
dop is mainly for devices that do not support native (native), such as Apple devices, which do not support DSD native output, so the industry A "cheating" method is adopted to embed the DSD signal into the PCM signal with a higher data volume and output it to the decoding device. Android and Windows support it, so you can natively output native signals.
For decoding equipment, there is no difference in sound quality between dop and native, but the sampling rate will be discounted. Because commonly used decoding chips generally have a pcm sampling rate of 384KHz and a dsd of 256. If dop is used, only dsd128 data can be embedded into the 352KHz pcm data. If it is natively output, it supports dsd256.