That's really disappointing. Can someone confirm this? Is there no way to play DSD512 local files on the M15?
Also, can I verify that "All to DSD" only works with local files and is defeated in streaming apps like Tidal/Roon? Does "All to DSD" operate in both Android and Pure Music modes?
AK4499 does 128x oversampling rather than 256x unlike AK4497 or ESS chips. So if there is a bypass happening, I think it is already with DSD256.