20. Why does the K9Pro/K9Pro ESS not support DSD512?

Max sampling rate support: 32bit/384kHz PCM, native DSD256.

Just like the K9 Pro, we found during testing that noises would occur when playing DSD512 and above 768k sampling rate. We have attempted many times yet still cannot absolutely settle it. Since we have strict quality controls and there are not many DSD512 and 768k sampling rate songs on the market, we decided to leave DSD512 and 768k sampling rate behind.