@jbuddha882
I think almost every player can function as a transport - that is output digital signals.
When evaluating dacs, I really recommend getting hold of their data sheets. You then have to look for what is not there. If they don't mention DSD, it is London to a brick they have to be fed digital down-converted to PCM. Down-converting loses resolution or timing or both.
Up-sampling to DSD512 won’t improve on the resolution of the original content any more than oversampling will increase the resolution of a CD. Both do make it easier to design gentle low pass filters rather than the ’brick wall’ filters needed with non-oversampling CD dacs, but claiming 8 times the quality of SACD ... ?
I never suggested USB was better than I2S. At least I2S delivers a continuous ’stream’ of values. USB is a packetised set of technologies that sporadically delivers audio packets which have to be buffered and re-clocked. In streaming mode, USB cannot guarantee packets won’t disappear!
I’d suggest HDMI which is purpose designed for high resolution audio and video, and delivers a continuous ’stream’ of values.
For the life of me, I cannot see how two transports outputting native HDMI can sound different when played through the same DAC. No doubt somebody will enlighten me