Jedinite - The jitter measurements for another Oppo player (the DV970H) using SPDIF were multiples higher than other budget DVD players according to measurements taken in 1 2007 generally-positive Stereophile review by Wes Phillips. I would look for BDP 83 measurements but that suggests that a DIP would help with your model.
Is the Monarchy DIP effective?
Considering buying a Monarchy DIP between a Sony 7700 dvd and a CAL Sigma 24/96 dac. Would I benefit using one and how much of a difference can I expect?