I have an Onkyo 807 and an OPPO 83 hooked together with an HDMI for movies and/or CDs and a pair of RCAs for analog CDs.

1. How do I know which unit is doing the processing? Is it the OPPO on analog and the Onkyo on HDMI? If so, how would I or anyone know that? Where does it tell me that? If not, then what determines the processor?

2. I never did adjust any of the speaker settings in the OPPO-distance, levels, size, etc. because they are set in the Onkyo. Do I need to? Are those the settings that are used when the OPPO does the processing or do the settings always default to the Onkyo regardless of which unit is processing?

3. If I do need to adjust the OPPO settings, do I set them independently of the Onkyo or do I set them the same as the Onkyo?

BTW, my setup sounds awesome so I'm wondering if everything is fine the way it is.......
My main concerns are knowing which piece is doing the processing and do I really need to mess with the OPPO settings for speakers, etc.