Besides this information here I found....
OPPO UDP-203 is using the AK4458 DAC with the performance of -107dB(THD+N) as a DAC with 115dB S/N characteristic....
Here is the best info I could find that someone else put out there to discern some differences in dac specs of the "replacement" OPPO type players coming to various markets around the world. I had nothing to do with the creation of the following comment...
The Oppo UDP-205 is considered best in its class for audiophiles. It's equipped with two ESS Technology ES9038PRO DACs for both stereo and 7.1 channel analog audio. The ES9038PRO is the flagship of the ESS PRO series. It sets a new benchmark for audio excellence with its best-in-class 140 dB of dynamic range, total harmonic distortion plus noise (THD+N) at -122dB in a 32-bit, 8-channel DAC.
The Panasonic UB9000 model is using the AK4493 DAC - Dynamic range, S/N: 123dB, THD+N: -113dB
The Pioneer UDP-LX500 will be using the AK4490EQ DAC - Dynamic range, S/N 120 db, THD+N -112 db
The Sony x1000 model is using some high performance 32 bit DAC (DSD 11.2 MHz, LPCM 192kHz capable) are the only details I find.
The Pioneer UDP-LX800 will be using the ES9026PRO DAC - Dynamic range, S/N 124 db, THD+N -110 db