You can download the complete design databases of two DAC designs of mine, but neither has anything to do with an ES9038.
Valve DAC from Linear Audio volume 13
74AHC02 and 74AHC08 DAC with 97 dB(A) dynamic range
Valve DAC from Linear Audio volume 13
74AHC02 and 74AHC08 DAC with 97 dB(A) dynamic range