Any body have experience with OPPO BDP-80?

Based on the original question, I think it is fair to assume that expensive mods are not what he is after. Personally, I see a lot of pressure to push mods and expensive equipment here. I think it is better to offer options within the OP's price range rather than propose expensive mods and alternatives. Another option would be to add an affordable DAC to your existing player to improve the CD portion but that will not augment the SACD output. To do that would require a stand alone SACD player. For the money I would recommend the Sony 595 CD/SACD changer witch shows up on the Sony Style website for $60 frequently. However, the BD-80 has good overall capability.

I love the 80. I don't use any of the audio processing. The HDMI outputs to the AV processor for hirez and the digital out goes to the DAC. Beautiful picture and stable transport for little money. You're not paying for features you don't use. When I want to spin a CD I use the MacMini or the Oppo. SACD can output PCM or DSD and the new hirez bluray audio formats are spectacular.

Yes, the digital multi-channel can go over HDMI to a receiver capable of decoding it. The SACD can be sent as PCM or DSD. I think DSD sounds better. Your processor has to have the capability of decoding DSD via HDMI or will default to PCM. Either way the processor is doing the work of the Oppo. Or, you can use the analog outputs from the Oppo. In my case, my receiver is a better decoder. If your receiver or pre-pro handles True-HD and similar hirez signals, then the HDMI will carry all the digital outputs from Oppo. My Onkyo locks onto the signals without problems or dropouts. The Oppo is very reliable.