I was in the audience for that presentation. Before I left for RMAF 2019, I shipped my Oppo UDP-205 to Dan to get the mod. When Paul brought up ModWright and talked about Dan's work, I was completely thrilled with my decision to get the mod done and knew my 205 was in great hands.
A variation on the Elyse DAC tube analog stage did find its way into the Oppo 205 mods, less two large Lundahl transformers that never would have fit. This also owes to the fantastic sound that we were able to achieve with the 205 mod!
This part of the history of the mod was nice to know.
By the way, when my wife and I were in the PS Audio room listening to the AN3's, Paul just sat down and started talking to us like we were old friends. He and his wife couldn't have been nicer to us.