OPPO 205 Digital set up

I just received my Oppo 205 and have a few questions about setting it up, and need information on some choices in the set up menu. I running it with a Marantz 8802A . I amusing the 7.1 and 2 channel analog connections via RCA to the 7.1 connections on my Marantz.. In the 7.1 configuration I am using the 2 channel analog outputs to the FR and FL of the 7.1 configuration. My questions are the following of which concern the choices in the set up menu:


1- I receive 5.1 for movies and SACD's but cannot receive any 7.1 for movies? Not sure if I dont have somethingset correctly in the Oppo.


2-HDMI AUTO FORMAT- choices LPCM, bitstream, Auto?  


3-STEREO SIGNAL-Front Left/Right or Down Mix Stereo    

     not sure what this is about? or really how and what it effects


4-HDMI SPECS--1080p, UHD24HZ, UHD or UHD HDR   (I set mine to UHD HDR on a non 4K TV)



I love the video and sound quality. I was really impressed and it blue away my Rotel 990 cd player and my Pioneer DV 47A SACD playerwhich were pretty decent stuff 20 years ago. OK I'm a little slow to catch up and replace my gear!!   thanks in advance for your advice.

The quickest way to get your problems solved is to consult the owners manual. If that’s not satisfactory, call OPPO, their service techs are second to none. I have spoken with them twice and was very impressed. I’m sorry I can’t comment on your 205, I own the 103. It sounds amazing for a $500 player, I’ve read the 205 is substantially better. Hope your problems get solved soon.

Thanks Tom