I was over at Lynchie's this evening, and he's already got the Oppo.
We burned a 24/96 DVD-Audio disc (with DVD-Audiofile to create the image, and ImgBurn to burn).
The Oppo was definitely outputting a 24/96 signal, because the little 96 kHz light on the 901 was glowing
but here's the weird thing. The Oppo has a volume control. According to the manual, audio options menu allows you to choose between "raw" and LPCM mode. LPCM mode forces all digital output to be LPCM, while the "raw" mode outputs whatever the original digital format is. So if you have a DAC that cannot understand a DTS signal, or Dobly Digital, then you would want to set it to LPCM. So that's what I told Lynchie to do (because the 901 only accepts PCM signals, and it can't decode DTS or dobly digital). But then we realized that the Oppo volume control was affecting the volume of the music. Which we interpretted as "bad", because that means that the Oppo is doing some digital processing before it outputs the signal. So we went back to the manual, and it said that if you switch the audio mode to "raw" (instead of LPCM), than the Oppo volume won't have any affect. That sounded like what we wanted (have the Oppo output the original digital signal), so we switched it to "raw" mode. (in this case, because the source material is PCM anyway, "raw" mode still outputs LPCM). but the weird thing was that the Oppo volume still could control the volume of the music.
At that point, I had to go - but we couldn't really figure out how to get the Oppo to just output the original digital signal, without any processing. Anyone have any thoughts?